Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.
A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)
Organic siloxanes which are polymerized to the oily stage. The oils have low surface tension and density less than 1. They are used in industrial applications and in the treatment of retinal detachment, complicated by proliferative vitreoretinopathy.
Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.
Substances used to create an impression, or negative reproduction, of the teeth and dental arches. These materials include dental plasters and cements, metallic oxide pastes, silicone base materials, or elastomeric materials.
Procedure of producing an imprint or negative likeness of the teeth and/or edentulous areas. Impressions are made in plastic material which becomes hardened or set while in contact with the tissue. They are later filled with plaster of Paris or artificial stone to produce a facsimile of the oral structures present. Impressions may be made of a full complement of teeth, of areas where some teeth have been removed, or in a mouth from which all teeth have been extracted. (Illustrated Dictionary of Dentistry, 1982)
Silicone polymers which consist of silicon atoms substituted with methyl groups and linked by oxygen atoms. They comprise a series of biocompatible materials used as liquids, gels or solids; as film for artificial membranes, gels for implants, and liquids for drug vehicles; and as antifoaming agents.
Compounds similar to hydrocarbons in which a tetravalent silicon atom replaces the carbon atom. They are very reactive, ignite in air, and form useful derivatives.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Implants used to reconstruct and/or cosmetically enhance the female breast. They have an outer shell or envelope of silicone elastomer and are filled with either saline or silicone gel. The outer shell may be either smooth or textured.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Organic chemistry methodology that mimics the modular nature of various biosynthetic processes. It uses highly reliable and selective reactions designed to "click" i.e., rapidly join small modular units together in high yield, without offensive byproducts. In combination with COMBINATORIAL CHEMISTRY TECHNIQUES, it is used for the synthesis of new compounds and combinatorial libraries.
A high-molecular-weight polymeric elastomer derived from the milk juice (LATEX) of HEVEA brasiliensis and other trees and plants. It is a substance that can be stretched at room temperature to at least twice its original length and after releasing the stress, retract rapidly, and recover its original dimensions fully.
A generic term for all substances having the properties of stretching under tension, high tensile strength, retracting rapidly, and recovering their original dimensions fully. They are generally POLYMERS.
A device, activated electronically or by expired pulmonary air, which simulates laryngeal activity and enables a laryngectomized person to speak. Examples of the pneumatic mechanical device are the Tokyo and Van Hunen artificial larynges. Electronic devices include the Western Electric electrolarynx, Tait oral vibrator, Cooper-Rand electrolarynx and the Ticchioni pipe.
Substances intended to be applied to the human body for cleansing, beautifying, promoting attractiveness, or altering the appearance without affecting the body's structure or functions. Included in this definition are skin creams, lotions, perfumes, lipsticks, fingernail polishes, eye and facial makeup preparations, permanent waves, hair colors, toothpastes, and deodorants, as well as any material intended for use as a component of a cosmetic product. (U.S. Food & Drug Administration Center for Food Safety & Applied Nutrition Office of Cosmetics Fact Sheet (web page) Feb 1995)
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.
Organisms that live in water.
Agents used to occlude dental enamel pits and fissures in the prevention of dental caries.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
An autologous or commercial tissue adhesive containing FIBRINOGEN and THROMBIN. The commercial product is a two component system from human plasma that contains more than fibrinogen and thrombin. The first component contains highly concentrated fibrinogen, FACTOR VIII, fibronectin, and traces of other plasma proteins. The second component contains thrombin, calcium chloride, and antifibrinolytic agents such as APROTININ. Mixing of the two components promotes BLOOD CLOTTING and the formation and cross-linking of fibrin. The tissue adhesive is used for tissue sealing, HEMOSTASIS, and WOUND HEALING.
Substances used to cause adherence of tissue to tissue or tissue to non-tissue surfaces, as for prostheses.
Exclusive legal rights or privileges applied to inventions, plants, etc.
Chemical reactions effected by light.
Products or parts of products used to detect, manipulate, or analyze light, such as LENSES, refractors, mirrors, filters, prisms, and OPTICAL FIBERS.
Devices that control the supply of electric current for running electrical equipment.
Expendable and nonexpendable equipment, supplies, apparatus, and instruments that are used in diagnostic, surgical, therapeutic, scientific, and experimental procedures.
Process that is gone through in order for a device to receive approval by a government regulatory agency. This includes any required preclinical or clinical testing, review, submission, and evaluation of the applications and test results, and post-marketing surveillance. It is not restricted to FDA.
Freedom of equipment from actual or potential hazards.
Methods of creating machines and devices.
Laws and regulations pertaining to devices used in medicine, proposed for enactment, or enacted by a legislative body.
A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].
Transparent, tasteless crystals found in nature as agate, amethyst, chalcedony, cristobalite, flint, sand, QUARTZ, and tridymite. The compound is insoluble in water or acids except hydrofluoric acid.
Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)
Substances and materials manufactured for use in various technologies and industries and for domestic use.
Formal voluntary or governmental procedures and standards required of hospitals and health or other facilities to improve operating efficiency, and for the protection of the consumer.
An agency of the PUBLIC HEALTH SERVICE concerned with the overall planning, promoting, and administering of programs pertaining to maintaining standards of quality of foods, drugs, therapeutic devices, etc.
An application that must be submitted to a regulatory agency (the FDA in the United States) before a drug can be studied in humans. This application includes results of previous experiments; how, where, and by whom the new studies will be conducted; the chemical structure of the compound; how it is thought to work in the body; any toxic effects found in animal studies; and how the compound is manufactured. (From the "New Medicines in Development" Series produced by the Pharmaceutical Manufacturers Association and published irregularly.)
That segment of commercial enterprise devoted to the design, development, and manufacture of chemical products for use in the diagnosis and treatment of disease, disability, or other dysfunction, or to improve function.
A system for verifying and maintaining a desired level of quality in a product or process by careful planning, use of proper equipment, continued inspection, and corrective action as required. (Random House Unabridged Dictionary, 2d ed)
A copolymer of polyethylene and polypropylene ether glycol. It is a non-ionic polyol surface-active agent used medically as a fecal softener and in cattle for prevention of bloat.
A nonionic polyoxyethylene-polyoxypropylene block co-polymer with the general formula HO(C2H4O)a(-C3H6O)b(C2H4O)aH. It is available in different grades which vary from liquids to solids. It is used as an emulsifying agent, solubilizing agent, surfactant, and wetting agent for antibiotics. Poloxamer is also used in ointment and suppository bases and as a tablet binder or coater. (Martindale The Extra Pharmacopoeia, 31st ed)
Particles consisting of aggregates of molecules held loosely together by secondary bonds. The surface of micelles are usually comprised of amphiphatic compounds that are oriented in a way that minimizes the energy of interaction between the micelle and its environment. Liquids that contain large numbers of suspended micelles are referred to as EMULSIONS.
Interruption of NEURAL CONDUCTION in peripheral nerves or nerve trunks by the injection of a local anesthetic agent (e.g., LIDOCAINE; PHENOL; BOTULINUM TOXINS) to manage or treat pain.
Substances that cause the adherence of two surfaces. They include glues (properly collagen-derived adhesives), mucilages, sticky pastes, gums, resins, or latex.
The application of suitable drug dosage forms to the skin for either local or systemic effects.
A flat, flexible strip of material used to cover or fasten together damaged tissue.
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The plastic can be cresol-novolaks, siloxane polyimide, polyxylylene, silicones, polyepoxides and bisbenzocyclo-butene. Some ...
Silicone Cyclomethicone Siloxanes and other organosilicon compounds Polymethylhydrosiloxane (PMHS) Silicone rubber "Linear ... It is one of several types of silicone oil (polymerized siloxane). Its applications range from contact lenses and medical ... PDMS is also used as a component in silicone grease and other silicone based lubricants, as well as in defoaming agents, mold ... ISBN 978-1-84214-564-7. ...and amodimethicone, which is an amino-substituted silicone and silicone quats, which contain ...
Also silicon forms similar materials without the need of carbon atoms, such as silicones through siloxane linkages; these ...
Silicone forms a dialkylsilanediol compound that is sufficiently hindered so the formation of a siloxane polymer does not occur ... The fact that carbon and silicone have similar, but also dissimilar, characteristics triggered the interest in substituting ...
... 's products include silicones used in several markets., as well as quartz and ceramic materials. The company also ... produces raw materials such as siloxane polymers and various additives, including silanes, specialty fluids, and urethane ... Its products include silicones and quartz. Momentive is headquartered in Waterford, New York. The company employs 9,200 ... cen.acs.org/business/specialty-chemicals/Momentive-close-silicone-raw-material/98/web/2020/08 "MOMENTIVE CELEBRATES 75 YEARS OF ...
... nR TMS and related volatile siloxanes are formed by hydrolysis of silicones-based containing materials, which are found in ... TMS is a contaminant in the atmospheres of spacecraft, where it arises from the degradation of silicone-based materials. ... Traces of trimethylsilanol, together with other volatile siloxanes, are present in biogas and landfill gas, again resulting ... Siloxanes_.pdf[dead link] J.A. Cella, J.C. Carpenter: Procedures for the preparation of silanols in J. Organomet. Chem. 480 ( ...
... middle of the 20th century saw the development of the chemistry and industrial use of siloxanes and the growing use of silicone ... Silicones may be considered analogous to mineral silicates, in which the methyl groups of the silicones correspond to the ... The word "silicone" was first used by Frederic Kipping in 1901. He invented the word to illustrate the similarity of chemical ... Silicone is also sometimes used in breast implants, contact lenses, explosives and pyrotechnics. Silly Putty was originally ...
... silicones (polyvinyl siloxane): condensation-cured silicones, addition silicones, vinyl polyether silicones (VPES) polyethers ... Silicones are inherently hydrophobic and as such require excellent moisture control for optimal use. Addition silicones have ... For example, the setting reaction of putty is started by kneading a low viscosity paste accelerator into a bulk of silicone ... As stated the material sets by a condensation reaction forming a three-dimensional silicone matrix whilst releasing ethyl ...
H2O Polymers with repeating siloxane linkages are called silicones. Compounds with an Si=O double bond called silanones are ... Most common are sealants, caulks (sealant), adhesives, and coatings made from silicones. Other important uses include synthesis ... They are mainly used to produce silicone polymers as described above. Especially important silyl chlorides are ... H2O Silanols tend to dehydrate to give siloxanes: 2 R3SiOH → R3Si-O-SiR3 + ...
... and the wording small siloxane molecule describes the actual oligomers of organo-silicon compounds well known as silicone ... These siloxane oligomers have the same structure as the silico-aluminate oligomers described below in this article. ... Because geopolymer artifacts look like natural stone, several artists started to cast in silicone rubber molds replications of ... giant molecule bound together by essentially the same forces that bind the atoms of the Si-O-Si skeleton into a small siloxane ...
... siloxanes MeSH D25.720.900.850 - silicones MeSH D25.720.900.850.150 - dimethylpolysiloxanes MeSH D25.720.900.850.150.750 - ... silicone gels MeSH D25.720.900.850.950 - silicone oils MeSH D25.919.367 - cyanoacrylates MeSH D25.919.367.341 - enbucrilate ... silicone elastomers MeSH D25.720.395 - fluorocarbon polymers MeSH D25.720.395.616 - polytetrafluoroethylene MeSH D25.720. ... simethicone MeSH D25.720.900.850.900 - silicone elastomers MeSH D25.720.900.850.905 - ...
... a rare disease Polyvinyl siloxane, an addition reaction silicone elastomer Potato virus S, a plant pathogenic virus Phantom ...
... an impression of the lingual surface using additional silicone (Polyvinyl siloxane) -. Isolation with rubber dam Beveling the ... a silicone index guidance is fabricated 4)rubber dam as isolation 5)preparation is done by drilling of a thin layer of tooth ...
... one of the only ways to remove the siloxane film is by acid strong enough to dissolve silicone. A combination of ... Rochow, E. "An Introduction to the Chemistry of the Silicones." New York: John Wiley & Sons, Inc., 1946. ISBN 1-4437-2286-3 ... As methyltrichlorosilane is a reactive compound, it is mainly used a precursor for forming various cross-linked siloxane ... One use for methyltrichlorosilane is in the production of methyl silicone resins (highly crosslinked polymers). Because of the ...
The siloxane functional group forms the backbone of silicones, the premier example of which is polydimethylsiloxane. The ... A siloxane is a functional group in organosilicon chemistry with the Si−O−Si linkage. The parent siloxanes include the ... The word siloxane is derived from the words silicon, oxygen, and alkane. In some cases, siloxane materials are composed of ... Cyclomethicones are a group of methyl siloxanes, a class of liquid silicones (cyclic polydimethylsiloxane polymers) that ...
... also called poly-vinyl siloxane, vinyl polysiloxane (VPS), or vinylpolysiloxane, is an addition-reaction silicone elastomer (an ... Polyvinyl siloxane is widely used in dentistry as an impression material. It is also used in other contexts where an impression ... Dental impression Dentures Mandikos M. "Polyvinyl siloxane impression materials: An update on clinical use" Archived 2004-09-13 ... Polyvinyl siloxane was commercially introduced in the 1970s. To create the material, the user simply mixes a colored putty ( ...
... silicone grease, silicone rubber, silicone resin, and silicone caulk. More precisely called polymerized siloxanes or ... The most common siloxane is linear polydimethylsiloxane (PDMS), a silicone oil. The second-largest group of silicone materials ... Silicone compounds are pervasive in the environment. Particular silicone compounds, cyclic siloxanes D4 and D5, are air and ... Silicone has many applications like silicone oil used to replace the vitreous humor following vitrectomy, silicone intraocular ...
"CVA SILICONE , Liquid Silicone Rubber LSR , Your Industry". Keller et al., A Self-Healing Poly(dimethyl siloxane) Elastomer, ... "About GE Silicones". www.siliconeforbuilding.com. Retrieved 2020-06-23. Seal & Design Inc. , SILICONE (VMQ) O-RINGS & SILICONE ... Silicone rubbers are widely used in industry, and there are multiple formulations. Silicone rubbers are often one- or two-part ... Silicone is considerably more permeable to gasses than most other rubbers which limits its use in some areas. Silicone rubber ...
When R is methyl, the four possible functional siloxane monomeric units are described as follows: "M" stands for Me3SiO, "D" ... Silicone resins are a type of silicone material which is formed by branched, cage-like oligosiloxanes with the general formula ... Silicone resins are prepared by hydrolytic condensation of various silicone precursors. In early processes of preparation of ... The most abundant silicone resins are built of D and T units (DT resins) or from M and Q units (MQ resins), however many other ...
Biomaterials 25:4741-8 Williams RL, Wilson DJ, Rhodes NP (2004). Stability of plasma-treated silicone rubber and its influence ... Inflammatory response to a novel series of siloxane-crosslinked polyurethane elastomers having controlled biodegradation. ...
The purity of the products crucially affects the production of siloxane polymers, otherwise chain branching arises. Rösch, L.; ... ISBN 978-3-527-29390-2. "Basic Silicone Chemistry - A Review" (PDF). Archived from the original (PDF) on 2011-05-16. Retrieved ... The other products are used in the preparation of siloxane polymers as well as specialized applications. Dichlorodimethylsilane ... precursor to silicones), but trimethylsilyl chloride (Me3SiCl) and methyltrichlorosilane (MeSiCl3) are also valuable. The ...
Cyclic siloxanes have been detected in some species of aquatic life. A scientific review in Canada has determined that " ... It is also used as part of silicone-based personal lubricants. D5 is considered an emollient. In Canada, among the volume used ... From this mixture, the cyclic siloxanes including D5 can be removed by distillation. In the presence of a strong base such as ... doi:10.1016/j.chemosphere.2012.10.041 Report of the Board of Review for Decamethylcyclopentasiloxane (Siloxane D5) established ...
... s condense to give disiloxanes: 2 R3SiOH → R3Si-O-SiR3 + H2O. The conversions of silyl halides, acetates, and ethers to ... Organosilanols occur as intermediates in industrial processes such as the manufacturing of silicones. Moreover, organosilanols ... siloxanes proceed via silanols. The sol-gel process, which entails the conversion of, for example, Si(OEt)4 into hydrated SiO2 ... occur as metabolites in the biodegration of small ring silicones in mammals. ...
The siloxane functional group forms the backbone of silicones, the premier example of which is polydimethylsiloxane.[2] The ... Synthesis of siloxanes[edit]. The main route to siloxane functional group is by condensation of two silanols: 2 R3Si-OH → R3Si- ... The parent siloxanes include the oligomeric and polymeric hydrides with the formulae H(OSiH2)nOH and (OSiH2)n.[1] Siloxanes ... The word siloxane is derived from the words silicon, oxygen, and alkane. In some cases, siloxane materials are composed of ...
... s react with water to produce hydrogen chloride, giving siloxanes and eventually silicon dioxide. In the case of ... Organic chlorosilanes are frequently used as coatings for silicon and glass surfaces, and in the production of silicone ( ... Other acid-forming species, especially acetate, can replace chlorine in silicone synthesis with little difference in the ... 2 HCl The analogous reaction of dimethyldichlorosilane gives siloxane polymers or rings: n (CH3)2SiCl2 + n H2O → [(CH3)2SiO]n ...
The silicone polymer equilibrated in the presence of strong base to give the pentamer:. ​n⁄5 [(CH3)2SiO]n → n [(CH3)2SiO]5. The ... Although never reported as being toxic, one report suggests cyclic siloxanes can be detected in some species of aquatic life.[6 ... It is also used as part of silicone based personal lubricants. D5 is considered an emollient. In Canada, among the volume used ... Moretto, Hans-Heinrich; Schulze, Manfred; Wagner, Gebhard (2005). "Silicones". Ullmann's Encyclopedia of Industrial Chemistry. ...
A silicone oil is any liquid polymerized siloxane with organic side chains. The most important member is polydimethylsiloxane. ... The class of silicone oils known as cyclosiloxanes has many of the same properties as other non-cyclic siloxane liquids but ... Other silicone liquids are cyclosiloxanes. Applications[edit]. Silicone oils are primarily used as lubricants, thermic fluid ... Consumer products to control flatulence often contain silicone oil. Silicone oils have been used as a vitreous fluid substitute ...
Cyclic siloxanes can be detected in some species of aquatic life. An independent, peer-reviewed study in the US found " ... Moretto, Hans-Heinrich; Schulze, Manfred; Wagner, Gebhard (2005). "Silicones". Ullmann's Encyclopedia of Industrial Chemistry. ... From this mixture, the cyclic siloxanes including D4 can be removed by distillation. In the presence of a strong base such as ... It is among the most important of all the cyclic siloxanes, with a global production volume of 136·million kilograms in 1993. ...
Moretto, Hans-Heinrich; Schulze, Manfred; Wagner, Gebhard (2005). "Silicones". Ullmann's Encyclopedia of Industrial Chemistry. ... The larger tetrameric and pentameric siloxanes, respectively octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane, are ...
Femring - a low-dose estradiol-acetate releasing ring, manufactured from silicone elastomer, for the relief of hot flashes and ... Annovera - a contraceptive vaginal ring, manufactured from methyl siloxane-based polymers, and releasing segesterone acetate (a ... Estring - a low-dose estradiol-releasing ring, manufactured from silicone elastomer, for the treatment of vaginal atrophy ( ...
Also silicon forms similar materials without the need of carbon atoms, such as silicones through siloxane linkages; these ...
... with a mixture of siloxane and silicone life, and of Niflheim, where metabolism is based on hydrofluoric acid and carbon ... known collectively as silicones, are much more stable. It has been suggested that silicone-based chemicals would be more stable ...
The main purpose of dimethyldichlorosilane is for use in the synthesis of silicones, an industry that was valued at more than $ ... Vinyl-Substituted Silphenylene Siloxane Copolymers: Novel High-Temperature Elastomers. Macromolecules. 1999, 32, pp 3426-3431. ... In the 1930s, the demand for silicones increased due to the need for better insulators for electric motors and sealing ... Dimethyldichlorosilane hydrolyzes to form linear and cyclic silicones, compounds containing Si-O backbones. The length of the ...
Poly-(ε-caprolactone)/siloxane is an inorganic-organic hybrid material which, when used as a solid electrolyte matrix with a ... Polysiloxane, commonly known as silicone, is the most commonly commercially available inorganic polymer. The large body of ... Rodrigues LC (2012). "Poly (􏰀-caprolactone)/siloxane biohybrids with application in "smart windows"". Synthetic Metals. 161: ...
Silicone, the main ingredient in silly putty, was put on ration, harming his business. A year later, the restriction on ... siloxane derivative composition containing zinc hydroxide sillyputtyhistory.blogspot.com Nowak, Peter (2011). Sex, bombs, and ... It contains a viscoelastic liquid silicone, a type of non-Newtonian fluid, which makes it act as a viscous liquid over a long ... Silly Putty is a toy based on silicone polymers that have unusual physical properties. It bounces, but it breaks when given a ...
Silicon Silicone Siloxane Organosilicon Silicone grease Silicone oil Silicone resin Silicone rubber Challenger, F. (1950). " ... He undertook much of the pioneering work on silicon polymers and coined the term silicone. He was born in Salford, Lancashire, ... He pioneered the study of the organic compounds of silicon (organosilicon) and coined the term silicone. His research formed ... Kipping undertook much of the pioneering work into the development of silicon polymers (silicones) at Nottingham. ...
Generally, impressions of the arch where the preparation is made are in addition silicone using the "wash impression" technique ... preferences for impression techniques using intraoral digital scanner versus polyvinyl siloxane material". The Journal of ...
In the first step CF3SO3H acid attacks siloxane Si-O-Si bonds and the formation of Si-O-SO2CF3 bond parallel with cage opening ... A silicone-based paint combined with QAS-functionalized silsesquioxanes could be used to paint medical and sanitary devices, ... Reorganization of the siloxane cage-like core (T8 → T10) can be performed, including isolation of intermediates, and cage ... Uponfurther acid attack, both T6(OH)4 C and siloxane dimer D are formed. Because this reaction takes place in an aqueous ...
One of the best known examples is polydimethylsiloxane, otherwise known commonly as silicone rubber. Inorganic polymers offer ... Related to the siloxanes are the polysilazanes. These materials have the backbone formula −Si−N−Si−N−. One example is ...
Alternatively, an impression can be taken of the post space and dental arch using a plastic post and a polyvinyl siloxane ... before a heavier bodied addition silicone material in a stock tray is seated over the prep to make the impression of the full ... lying within the canal to aid its removal Gingival retraction as described above is completed A light bodied addition silicone ...
Cyclomethicone D6 Siloxane No Abnormal Odour Hot As Peggy,Colorless And Transparent Silicon Oil Sell Well Best Price from ... Find Complete Details about Dodecamethyl Cyclomethicone D6 Cyclohexasiloxane Silicone Oil For Skin Care,Dodecamethy ... Dodecamethyl Cyclomethicone D6 Cyclohexasiloxane Silicone Oil For Skin Care , ... Chemical name : Dimethicone / Silicone Oil / Silicone Fluid / Polydimethylsiloxane / Simethicone. CAS No. : 63148-62-9/9016-00- ...
Siloxanes and Silicones, di-Me, Me Ph, hydroxy-terminated, potassium salts).Also offer free database of 68440-74-4(Siloxanes ... and Silicones, di-Me, Me Ph, hydroxy-terminated, potassium salts) including MSDS sheet(poisoning, toxicity, hazards and safety ... Siloxanes and Silicones, di-Me, Me Ph, hydroxy-terminated, potassium salts) for price inquiry. where to buy 68440-74-4( ... Siloxanes and Silicones, di-Me, Me Ph, hydroxy-terminated, potassium salts Application:Organic Chemicals ...
Home » Complete Product List » Silicone & Siloxane Silicone & Siloxane. Our Technical Bulletins are presented in Adobe Acrobat ... CORCHEM® 140 Heat Resistant Silicone Finish. Unmodified, phenyl methyl silicone copolymer combined with inorganic color stable ... CORCHEM® 139 Heat Resistant Silicone Aluminum. Unmodified, phenyl methyl silicone copolymer combined with bright leafing ...
... silicone: Applications: Vulcanized silicone rubber is prepared in two principal forms: (1) as room-temperature-vulcanizing (RTV ... siloxane polymers. *. In major industrial polymers: Polysiloxanes (silicones). Vulcanized silicone rubber is prepared in two ... In silicone: Applications. Vulcanized silicone rubber is prepared in two principal forms: (1) as room-temperature-vulcanizing ( ... Other articles where Silicone rubber is discussed: ... Silicone rubber. chemical compound. THIS IS A DIRECTORY PAGE. ...
Silicone is at the core of silicone sealants - the most widely used type in the construction industry. How can this chemical ... Siloxanes and Silicones. Download PDF Silicone is at the core of silicone sealants - the most widely used type in the ...
The siloxane functional group forms the backbone of silicones, the premier example of which is polydimethylsiloxane.[2] The ... Synthesis of siloxanes[edit]. The main route to siloxane functional group is by condensation of two silanols: 2 R3Si-OH → R3Si- ... The parent siloxanes include the oligomeric and polymeric hydrides with the formulae H(OSiH2)nOH and (OSiH2)n.[1] Siloxanes ... The word siloxane is derived from the words silicon, oxygen, and alkane. In some cases, siloxane materials are composed of ...
Scarend silicone gel should not be used by patients with hypersensitivity to alky-4-hydroxybenzoates (parabenes) and infants ... Apply a very thin coat of Scarend Silicone gel directly to the affected area/scar area. To maintain the coverage apply twice ...
Wholesale Various High Quality Silicone Sealant Polymer Products from Global Silicone Sealant Polymer Suppliers and Silicone ... Strong silicone bra adhesive sealant organic siloxane polymer US $12-15 / Kilogram ... Tags: Acetic Silicone Sealant For Glass Curtain Wall/strong Silicone Sealant Of Structural , Silicone Free Sealant/ Silicone ... rtv silicone sealant dow corning silicone sealant liquid silicone sealant general purpose silicone sealant water based silicone ...
Specialized, synthetic crosslinked siloxane that functions as a film-forming agent and polymer. ... silicone Substance derived from silica (sand is a silica). The unique fluid properties of silicone give it a... ... A type of silicone, dimethicone is one of the most frequently used emollient ingredients in moisturizers due to its gentleness ... A silicone-enhanced film-forming agent. Also functions as a binding agent so products adhere better... ...
Siloxanes Suppliers, Siloxanes Manufacturers, related products of Siloxanes. ... Siloxanes. Product Name:. Siloxanes. Synonyms:. Silicone; Silicones; Siloxanes; Siloxanes and Silicones; Siloxanes and ... silicone); AS 4000; AS 4010; AS 46; AS 60; AS 60 (siloxane); AS 8E; AS 8a; ATF 1; ATF 1 (silicone); ATF 2; ATF 2 (silicone); AU ... silicone); AB; AD 8719D; AD 9003; ADF 18; ADF57; ADM 80-1; AF 2K; AF 30IND; AF 8E; AF-A; AF-C; AF-C (siloxane); AF-FG 10; AFC-G ...
Production of Hydrogels based on Siloxanes (Silicone). In separate batches, 3.0 wt % hexamethyldisiloxane (brand name SILMOGEN ... silicone gels) (D2O silicone gel, H2O silicone gel, D2O/H2O silicon gel). The gels were stored at room temperature for further ... Hair wax products containing silicone wax, silicone-free wax and oils. July, 2005. Loifenfeld et al. ... The sample group received a D2O silicone gel with 100% D2O prepared according to Example 2; the control group received H2O ...
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Read more to understand silicones safety profile and tips for using silicone. ... Is silicone a safe plastic alternative for your kitchen? The jury is still out on this one. ... Silicones-or siloxanes as they are also known-are something of a hybrid between synthetic rubbers and synthetic plastic ... For example, one study tested the release of siloxanes from silicone nipples and bakeware into milk, baby formula, and a ...
Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include hydrogen- ... Siloxane crosslinkers. US4421904 *. Jun 12, 1981. Dec 20, 1983. General Electric Company. Ultraviolet curable silicone coating ... Three basic UV-curable silicone systems have been developed: Epoxysilicone systems, acrylic-functional silicone systems, and ... More particularly, it relates to new photocurable siloxane polymers and new photocatalyst-siloxane polymer combinations. ...
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Silicone, any of a diverse class of fluids, resins, or elastomers based on polymerized siloxanes, substances whose molecules ... Alternative Titles: polysiloxane, siloxane. Silicone, also called polysiloxane, any of a diverse class of fluids, resins, or ... inorganic polymer: Silicones. Silicones are polymeric organosilicon compounds containing Si―O―Si linkages and Si―C bonds. They ... situation was the choice of silicone rubber as a poppet in an early heart valve design. The silicone absorbed lipid from plasma ...
Silicone The term silica denotes the compound silicon dioxide, SiO2. It is a ubiquitous chemical substance with rich chemical ... Silanes, siloxanes, and silicones are commercially produced from silicon and methyl chloride in a process known as the "direct ... silicone Odourless and colourless polymer based on silicon. Silicones are inert and stable at high temperatures, and are used ... Silicones. Silicones (or silicon-based materials) are an integral part of daily life. These materials make our denim clothing ...
The siloxane functional group forms the backbone of silicones, the premier example of which is polydimethylsiloxane. The ... A siloxane is a functional group in organosilicon chemistry with the Si−O−Si linkage. The parent siloxanes include the ... The word siloxane is derived from the words silicon, oxygen, and alkane. In some cases, siloxane materials are composed of ... Cyclomethicones are a group of methyl siloxanes, a class of liquid silicones (cyclic polydimethylsiloxane polymers) that ...
ME HYDROGEN SILOXANES AND SILICONES; METHYL HYDROGEN POLYSILOXANE; POLY [OXY (METHYLSILYLENE) ] ; SILOXANES AND SILICONES, ME ... About METHICONE: Methicone is a linear silicone-based polymer.. Function(s): Skin-Conditioning Agent - Occlusive; Surface ... HYDROGEN; HYDROGEN METHYL POLYSILOXANE; METHYL HYDROGEN POLYSILOXANE; METHYL HYDROGEN SILOXANE; METHYL SILICATE 51; POLY (OXY ( ...
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... a silicone, a siloxane polymer, a polylactic acid, a polyglycolic acid, a polycaprolactone, a polyhydroxybutyrate valerate, a ... a silicone, a siloxane polymer, a polylactic acid, a polyglycolic acid, a polycaprolactone, a polyhydroxybutyrate valerate, a ... silicones; siloxane polymers; polylactic acid; polyglycolic acid; polycaprolactone; polyhydroxybutyrate valerate and blends and ... Implantable or insertable medical devices containing silicone copolymer for controlled delivery of therapeutic agent. ...
The present invention provides an acrylate/silicone pressure-sensitive adhesive tape having a foam backing having improved ... MAHAS - methacryloxyhydroxyamino siloxane. Synthesis of difunctional precursors for all free-radically polymerizable siloxanes ... Terminal cluster vinyl silicones and acrylate cluster silicones therefrom. US4595471 *. 6 Ago 1985. 17 Jun 1986. Wacker-Chemie ... Toray Silicone, Co., Ltd.. Silicone pressure-sensitive adhesive composition. US4777276 *. 29 Oct 1981. 11 Oct 1988. Minnesota ...
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Siloxanes (silicones), dimethyl, isopropyl methyl, methyl 1-methyl-C9-49-alkyl (CAS Reg. No. 144635-08-5). For use only as a ... Siloxanes and silicones; platinum-catalyzed reaction product of vinyl-containing dimethyl polysiloxane (CAS Reg. Nos. 68083-19- ... Siloxanes and silicones; platinum-catalyzed reaction product of vinyl-containing dimethylpolysiloxane (CAS Reg. Nos. 68083-19-2 ...
  • Blend of silicone polymers that functions as a thickening agent and texture enhancer. (paulaschoice.com)
  • Similar reactions are used industrially to convert cyclic siloxanes to linear polymers. (wikipedia.org)
  • Cyclomethicones are a group of methyl siloxanes, a class of liquid silicones (cyclic polydimethylsiloxane polymers) that possess the characteristics of low viscosity and high volatility as well as being skin emollients and in certain circumstances useful cleaning solvents. (wikipedia.org)
  • More particularly, it relates to new photocurable siloxane polymers and new photocatalyst-siloxane polymer combinations. (google.com)
  • No. 4,576,999, feature epoxy-functional diorgano siloxane diorganosiloxane base polymers catalyzed by onium salt photoinitiators. (google.com)
  • The silicones differ from most industrial polymers in that the chains of linked atoms that make up the backbones of their molecules do not contain carbon , the characteristic element of organic compounds . (britannica.com)
  • Siloxanes were first characterized as polymers by the English chemist Frederic Stanley Kipping in 1927. (britannica.com)
  • Silicones-or siloxanes as they are also known-are something of a hybrid between synthetic rubbers and synthetic plastic polymers. (bewellbuzz.com)
  • The silicon is then reacted with fossil fuel-derived hydrocarbons to create siloxane monomers that are bonded together into polymers to form the final silicone resin. (bewellbuzz.com)
  • The material is a mixture of silicone polymers and boric acid . (encyclopedia.com)
  • In addition, as a consequence of the manufacturing process for silicone polymers, the 3 compounds are present in small quantities in most silicone polymers including oils, gums, greases, elastomers (rubbers), and organofunctional compounds such as surfactants. (thefreelibrary.com)
  • Unlike many compounds in commerce--polymers in particular--silicones have been extensively investigated for both their impact on the environment and human toxicity. (thefreelibrary.com)
  • Silicones (more accurately called polymerized siloxanes or polysiloxanes ) are mixed inorganic- organic polymers . (newworldencyclopedia.org)
  • Silicone rubbers are synthetic polymers with an unusual molecular structure a giant backbone of alternating silicon and oxygen atoms. (mddionline.com)
  • There are two popular catalyst systems used to cross-link silicone polymers: peroxide (free-radical) systems and platinum (addition-cure) systems. (mddionline.com)
  • Silicone polymers which consist of silicon atoms substituted with methyl groups and linked by oxygen atoms. (harvard.edu)
  • We have "architectured" four distinct acrylate-functionalized methyl-silicone polymers. (adhesivesmag.com)
  • OH polymers (hydrolyzates) or silicone fluids with amino or epoxy groups. (wacker.com)
  • Zinc oxide and polydimethyl siloxane. (caig.com)
  • The kit contains a catalyst, a filler, and polydimethyl siloxane polymer. (mddionline.com)
  • leading manufacturer and exporter of Polydimethyl siloxane fluid. (burrillandco.com)
  • After evaporation of the polydimethyl-siloxane, the high molecular weight silicone acrylate copolymer forms a film on skin. (dow.com)
  • 5. The one-component- foam formulation of Claim 1, wherein the cell opener is a polydimethyl siloxane and the emulsifier is an organosilicon. (sumobrain.com)
  • Photolytic procedure for introducing an unsaturated group in polydimethyl siloxane Semenov, V. 2012-03-16 00:00:00 A procedure for introducing an unsaturated group in polydimethyl siloxane consisting in irradiating its solution in hexane by UV light in the presence of phenylethinylpentamethyldisilane was proposed. (deepdyve.com)
  • 2. Pure silicone fluids are clear, colorless, and odorless linear Polydimethylsiloxane fluids / PDMS. (alibaba.com)
  • The siloxane functional group forms the backbone of silicones , the premier example of which is polydimethylsiloxane . (wikipedia.org)
  • Hydroxyl silicone oil / liquid Silicone rubber (CAS No.70131-67-8) Product Description liquid polymer 107 OH POLYMER/High molecular hydroxy silicone oil /No MOQ limited High molecular OH-terminated Polydimethylsiloxane CAS No. :70131-67-8 MOLECULAR FORMULA. (bushorchimp.com)
  • nH Other Names: (107)hydroxy silicone oil , Hydroxy polydimethylsiloxane, Hydroxyl -terminated polydimethylsiloxane, OH-termianted silicone oil , OH-terminated silicone polymer, High molecular hydroxy silicone oil , Hydroxy end group polydimethylsiloxane, OH. (bushorchimp.com)
  • 206 Hydroxy Silicone Oil As additive for silicone rubb, fabric, paper, leather products,droxy terminated polydimethylsiloxane silicone Oil (dimenthyl silicone oil based) 1 [ product introduction] This product is the hydroxy terminated polydimethylsiloxane . (bushorchimp.com)
  • TZX Silicone Finishing Agent forPolyester Fiber Properties: This product is an emulsion with the end group and side group (side chain)and the polydimethylsiloxane having one or more kinds of reactive groups. (bushorchimp.com)
  • The most common siloxane is linear polydimethylsiloxane (PDMS), a silicone oil. (wikipedia.org)
  • Polydimethylsiloxane fluid for the manufacturing of silicone antifoam emulsion. (burrillandco.com)
  • Silica is the raw material used to make silicone resins. (bewellbuzz.com)
  • When silicone is burned in air or oxygen, it forms solid silica (silicon dioxide, SiO2) as a white powder, char, and various gases. (wikipedia.org)
  • The new plant makes siloxane and fumed silica. (acs.org)
  • Mercaptoalkoxyalkyl-functional polysiloxanes and vinyl-functional siloxane terpolymers have been discovered which are curable on exposure to ultraviolet radiation in the presence of a photoinitiator. (google.com)
  • More precisely called polymerized siloxanes or polysiloxanes, silicones consist of an inorganic silicon-oxygen backbone chain (⋯−Si−O−Si−O−Si−O−⋯) with two organic groups attached to each silicon center. (wikipedia.org)
  • Polysiloxanes are called "silicones" due to early mistaken assumptions about their structure. (newworldencyclopedia.org)
  • The parent siloxanes include the oligomeric and polymeric hydrides with the formulae H(OSiH 2 ) n OH and (OSiH 2 ) n . [1] Siloxanes also include branched compounds, the defining feature of which is that each pair of silicon centres is separated by one oxygen atom. (wikipedia.org)
  • Siloxanes are manmade and have many commercial and industrial applications because of the compounds' hydrophobicity, low thermal conductivity, and high flexibility. (wikipedia.org)
  • Oxidation of organosilicon compounds, including siloxanes, gives silicon dioxide . (wikipedia.org)
  • Siloxanes also include branched compounds, the defining feature of which is that each pair of silicon centres is separated by one oxygen atom. (wikipedia.org)
  • The invention relates to novel cyclic siloxane compounds of general formula (I) which despite having a high density of groups that are suitable for polymerisation, have a low viscosity, allow a high filler intake and result in substances with a low polymerisation shrinkage. (google.co.uk)
  • Silicones are compounds that contain silicon, carbon, hydrogen, oxygen, and perhaps other kinds of atoms as well, and have very different physical and chemical properties. (wikipedia.org)
  • Compounds containing silicon-oxygen double bonds, now called silanones, but which could deserve the name "silicone", have long been identified as intermediates in gas-phase processes such as chemical vapor deposition in microelectronics production, and in the formation of ceramics by combustion. (wikipedia.org)
  • Thermally conductive compounds are grease like silicone materials, heavily filled with heat-conductive metal oxides. (caig.com)
  • Silicones are synthesized from chlorosilanes, tetraethoxysilane, and related compounds. (newworldencyclopedia.org)
  • The use of silicone resins for preparing molds of museum objects is not recommended as residual curing compounds, release agents, and uncured silicone oils can stain porous materials and corrode metals. (mfa.org)
  • Stable DQ silicone polymer sols composed of di (D)- and tetra (Q)-functional alkoxysilanes were prepared by the following methods: (i) co-hydrolysis-condensation between diethoxy(dimethyl)silane (DEDMS) and tetraethoxysilane (TEOS) (DEDMS-TEOS as random copolymer sols), (ii) co-hydrolysis-condensation between poly(dimethylsiloxane) (PDMS) and TEOS (PDMS-TEOS as random block copolymer sol), and (iii) triethoxysilylation of a PDMS-lithium salt (PDMS-TES). (springer.com)
  • M.J. Owen, Properties and applications of silicones applications of PDMS. (springer.com)
  • Unmodified, phenyl methyl silicone copolymer combined with bright leafing aluminum weather resistant. (corchem.com)
  • Unmodified, phenyl methyl silicone copolymer combined with inorganic color stable pigmentation speci. (corchem.com)
  • Siloxane molecules rotate freely around the Si-O bond, so, even with vinyl, methyl, or phenyl groups attached to the silicon atoms, the molecule is highly flexible. (britannica.com)
  • F. S. Kipping coined the word silicone in 1901 to describe the formula of polydiphenylsiloxane, Ph2SiO (Ph denoting phenyl, C6H5), by analogy with the formula of the ketone benzophenone, Ph2CO (his term was originally silicoketone). (wikipedia.org)
  • 8. A composition according to claim 1 wherein said silicone further comprises constituents selected from the group consisting of methyl groups, phenyl groups, longer chain alkyl groups or cyanopropyl groups. (google.com.au)
  • DESCRIPTIONJSB-1629 Phenylated silicone fluid, a kind of special phenyl siloxane. (allproducts.com)
  • The silicone resins used in high-temperature-resistant coatings as binders in solvent, liquid resin and emulsion form are mainly methyl silicone resins and methyl-phenyl silicone resins. (pcimag.com)
  • Silicone resins that contain only phenyl groups are used in niche applications because the resultant coatings are thermoplastic and therefore not always suitable. (pcimag.com)
  • This improved miscibility means that methyl-phenyl silicone resins are frequently used as a starting point for the synthesis of hybrid silicone resins. (pcimag.com)
  • However, these methyl-phenyl silicone resins are not readily miscible with methyl silicone resins because their polarities differ greatly. (pcimag.com)
  • Methyl-phenyl silicone resins are generally commercially supplied in aromatic solvents. (pcimag.com)
  • Methyl silicone resins and methyl-phenyl silicone resins are usually divided into two types: the classic heat-curing systems, which are dried in ovens at high temperatures to achieve their final film properties, and the novel and versatile ambient-cure systems. (pcimag.com)
  • Silicone , also called polysiloxane , any of a diverse class of fluids, resins , or elastomers based on polymerized siloxanes, substances whose molecules consist of chains made of alternating silicon and oxygen atoms. (britannica.com)
  • A silicone or polysiloxane is a polymer made up of siloxane (−R2Si−O−SiR2−, where R = organic group). (wikipedia.org)
  • A flexible, rubbery polysiloxane is known as silicone rubber . (newworldencyclopedia.org)
  • RX-103 is a modified silicone fluid of medium viscosity and its special chemical structure imbues it with the advantages of silico. (tradeindia.com)
  • All low viscosity silicone sealant wholesalers & low viscosity silicone sealant manufacturers come from members. (pickjoomla.com)
  • We doesn't provide low viscosity silicone sealant products or service, please contact them directly and verify their companies info carefully. (pickjoomla.com)
  • pouring silicone sealant for LED encapsulation Thermal Conductive Sealant Thermal Conductive Pouring Sealant is a material in LOW viscosity anci composed of double components with excellent fluidity and stability. (pickjoomla.com)
  • Low Viscosity Modified Silicone Polymer for Household Decoration Sealant Household Decoration sealant made with our Low viscosity Silyl Modified Polymer (STP) polymerize rapidly by effect of the air humidity. (pickjoomla.com)
  • DESCRIPTIONJS-9041 Silicone Elastomer Blend has a non-volatile, low viscosity dimethicone. (allproducts.com)
  • It has now been found, surprisingly, that uncrosslinked and, in some cases, low viscosity graft polymer dispersions are obtained in the free-radical polymerization of vinyl monomers in the presence of mixtures of Si-H-siloxanes andSi-vinylsiloxanes. (patentgenius.com)
  • Milky White Liquid Silicone Emulsion Oil Cosmetic Raw Material COA MSDS Products Description This product is a polymer of high molecular weight poly (dimethyl siloxane anionic emulsion , provide superior conditioning performance, can effectively improve the. (opencroquet.org)
  • Both saline and silicone implants shells are made of dimethyl siloxane, which is a silicate elastomer. (sharecare.com)
  • High tear strength, low hardness silicone elastomer-forming composition is provided using a unique combination(s) of polyorganosiloxanes and organohydrogenpolysiloxanes, where the polyorganosiloxanes and the organohydrogenpolysiloxanes contain both straight-chain and resinous polyorganosiloxanes. (google.es)
  • E) inhibitor, and where combined (A)-(E) comprises a curable high tear strength, low hardness silicone elastomer-forming composition, wherein when said composition is cured it has a Shore A hardness of less than about 35. (google.es)
  • 2. The curable high tear strength, low hardness silicone elastomer forming composition of claim 1 where at least two organopolysiloxanes (A) comprises the reaction product of linear polyorganosiloxane and branched polyorganosiloxane. (google.es)
  • The strong silicon-oxygen chemical structure of silicone gives the elastomer its unique performance properties, including biocompatibility, superior temperature and chemical resistance, good mechanical and electrical properties, and natural clarity or translucence. (mddionline.com)
  • Specifically, the cross-linked siloxane elastomer is present in the gel at a concentration of about 0.5% to 7.0% w/w. (cosmeticsandtoiletries.com)
  • ANNOVERA is a silicone elastomer vaginal system containing 103 mg segesterone acetate (SA) and 17.4 mg ethinyl estradiol (EE), which releases on average 0.15 mg/day of segesterone acetate and 0.013 mg/day of ethinyl estradiol. (nih.gov)
  • This article is intended to provide a general overview of silicone rubber elastomers, including physical properties, fabrication methods, and potential advantages for device manufacturing. (mddionline.com)
  • This structural linkage is similar to that found, for example, in a mineral such as quartz, and silicones have superior heat resistance compared with other elastomers. (mddionline.com)
  • In extensive testing, silicone rubbers have exhibited superior compatibility with human tissue and body fluids and an extremely low tissue response when implanted, compared with other elastomers. (mddionline.com)
  • Silicones can withstand a wider range of temperature extremes than nearly all other elastomers, remaining stable through temperature variations from 75° to 500°F. They can be sterilized via EtO gas, gamma or E-beam irradiation, steam autoclaving, and various other methods. (mddionline.com)
  • Once cured, silicone resins are chemically inert and can exist as elastomers and resins (both thermoset and thermoplastic ). (mfa.org)
  • Silicone polycarbonate block copolymer formation is effected by using a phase transfer catalyst to generate polycarbonate oligomers having at least one terminal haloformate group followed by the late addition of hydroxyaryl terminated polydiorganosiloxane. (google.com)
  • Although the resulting silicone polycarbonate block copolymer has been found to have improved flame retardance compared to polycarbonate, the clarity of the silicone polycarbonate copolymer is often adversely affected. (google.com)
  • The polymer containing unsaturated groups may be a silicone polymer also, or may be a non-silicone polymer such as a styrene, butadiene or urethane polymer or copolymer. (google.com.au)
  • This UV/EB silicone release-coating system is a 100%-reactive chemistry based on acrylate-modified silicone-copolymer technology. (adhesivesmag.com)
  • A one-component-foam formulation contains a propellant in a concentration range of from 5 to 35 weight-percent of total formulation weight and contains at least 50 weight-percent non-liquefied inert gases based on total propellant weight, a polyol, a silicone glycol copolymer and less than 0.01 weight-percent of a cell opener based on polyol weight. (sumobrain.com)
  • A general formula for silicones is (R 2 SiO) x , where R can be any one of a variety of organic groups. (britannica.com)
  • Organic siloxanes which are polymerized to the oily stage. (bioportfolio.com)
  • These are responsible for silicones' semi-organic nature. (wacker.com)
  • This research pursued for the purpose of carrying out synthetic organic reactions using silicone as a new class of organosilicon reagent. (nii.ac.jp)
  • In particular, poly (phenylmethylsiloxane), which is a commercially available highly thermo-resistant silicone oil, affected palladium-catalyzed cross-coupling reaction with organic halides to give biaryl derivatives that are potentially available for liquid crystalline organic materials. (nii.ac.jp)
  • Methyl silicone resins are the polymethyl siloxanes with the lowest organic content. (pcimag.com)
  • The unique fluid properties of silicone give it a. (paulaschoice.com)
  • They are used in many cosmetic products where eventual complete evaporation of the siloxane carrier fluid is desired. (wikipedia.org)
  • To provide a stable silicone emulsion, the surfaces of the fluid droplets are covered with surfactants (emulsifiers). (wacker.com)
  • Cationic Hydroxyl Silicone Oil Emulsion as Fabric Finishing Agent / Soft Agent Hydroxyl Silicone oil emulsion as fabric finishing agent, mould releasing agent and fiber-glass water-proofing agent KY-305 Cationic dimethyl hydroxyl silicone emulsion. (bushorchimp.com)
  • ZBH-302 Hydroxyl Silicone Emulsion (Anionic) Product Name: ZBH-301 Hydroxyl silicone oil emulsion (cationic) Number: C001 Technical indicators: 1, Appearance: white uniform emulsion, no mechanical impurities. (bushorchimp.com)
  • All Verified silicone emulsion msds suppliers & silicone emulsion msds manufacturers have passed our Business License Check, they can provide quality silicone emulsion msds products. (opencroquet.org)
  • Product Detail Product name silicone oil Appearance light-yellow transparent liquid Composition modified silicone & emulsion Ionicity weak. (opencroquet.org)
  • TDS MSDS overview Modified Silicone Emulsion EM-4100 It is a terpolymer of siloxane, polyamines and polyether. (opencroquet.org)
  • It is the upgraded products of common amino Silicone Emulsion , overcoming the bad stability and. (opencroquet.org)
  • Features DC-8417 is reactive amino-modified silicone oil concentrated solution, is polylactic dope to prepare silicone oil emulsion . (opencroquet.org)
  • High Efficient Modified Silicone Antifoam Emulsion for Water Treatment KY-2110 popular silicone antifoamer 1 Properties and characteristics of products: KY-2110 is a new type and high efficient modified si. (burrillandco.com)
  • A type of silicone, dimethicone is one of the most frequently used emollient ingredients in moisturizers due to its gentleness. (paulaschoice.com)
  • A mixture of the silicone dimethicone with PEG-10 and PEG-15. (paulaschoice.com)
  • Silicone with a drier finish than dimethicone. (paulaschoice.com)
  • Stearyl dimethicone is a synthetic skin-conditioning agent that's a siloxane polymer. (paulaschoice.com)
  • Silicone compositions have become widely accepted as release coatings, which are useful to provide a surface or material which is relatively nonadherent to other materials which would normally adhere closely thereto. (google.com)
  • Silicone release compositions may be used as coatings which release pressure sensitive adhesives for labels, decorative laminates, transfer tapes, etc. (google.com)
  • Silicone release coatings on paper, polyethylene, Mylar , and other such substrates are also useful to provide non-stick surfaces for food handling and industrial packaging. (google.com)
  • Silicone resins are used in protective coatings and electrically insulating varnishes and for laminating glass cloth. (britannica.com)
  • Consumer advocate and toxin-free living expert Debra Lynn Dadd takes a cautious view toward silicones and continues to assess new research, but she is not willing to give up her silicone cookware just yet, as she considers it safer than nonstick alternatives with perfluorinated chemical coatings. (bewellbuzz.com)
  • Rebecca Martin - Silicone fouling-release coatings: Physical effects on the adhesion of marine fouling invertebrates with particular emphasis on membranous-based barnacles. (ncl.ac.uk)
  • UV silicone release coatings are cured by adding 2.0% to 2.5% free-radical photoinitiator. (adhesivesmag.com)
  • A very small amount of silicone is often added to coatings by the manufacturer, so there is a very good chance the coating you're using already has some silicone in it. (woodweb.com)
  • Because Kipping thought that the structure of the repeating unit was essentially that of a ketone (the polymer chains formed by silicon atoms, with oxygen atoms attached by double bonds), he incorrectly called them silicones, a name that has persisted. (britannica.com)
  • Although silicones contain silicon atoms, they are not made up exclusively of silicon, and they have completely different physical characteristics from elemental silicon. (newworldencyclopedia.org)
  • Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include hydrogen-functional and vinyl-functional photoreactive terpolymers, which are especially compatable with certain perbenzoate ester photocatalysts. (google.com)
  • This invention relates to ultraviolet radiation-curable silicone release compositions. (google.com)
  • Previously developed silicone release products have been heat-curable, however, the high energy costs and safety and environmental considerations associated with high temperature oven curing has provided the incentive for developing alternative technologies, such as ultraviolet radiation-curable silicones. (google.com)
  • Three basic UV-curable silicone systems have been developed: Epoxysilicone systems, acrylic-functional silicone systems, and mercaptofunctional silicone systems. (google.com)
  • Apply a very thin coat of Scarend Silicone gel directly to the affected area/scar area. (meds-365.net)
  • Scarend silicone gel should not be used by patients with hypersensitivity to alky-4-hydroxybenzoates (parabenes) and infants under 1 year old. (meds-365.net)
  • 2. A silicone release coating composition as defined in claim 1, wherein said terpolymer has a ratio of dimethyl: methylvinyl: methylhydrogen units equal to, approximately, 40-90: 1-20: 5-50. (google.com)
  • 2. A composition according to claim 1 wherein said silicone ranges from between about 1 weight percent and about 60 weight percent based on the total weight of the composition. (google.com.au)
  • 5. A composition according to claim 4 forming a predominantly chain-extended structure wherein said vinyl-containing polymer contains from about two to about four vinyl groups and wherein said hydride-containing silicone contains 1 to 2 times the equivalent of said vinyl-containing polymer with the ratio of said hydride groups to said vinyl groups being between about 1.2:1 and about 6:1. (google.com.au)
  • By varying their composition and molecular structures, silicones with a range of properties can be prepared. (newworldencyclopedia.org)
  • The use of a poly-siloxane precursor in polymer derived ceramics allows the formation ceramic bodies with complex shapes, although the significant shrinkage in pyrolysis needs to be taken into account. (wikipedia.org)
  • Narisawa M (2010) Silicone resin applications for ceramic precursors and composites. (springer.com)
  • Silanes, siloxanes, and silicones are commercially produced from silicon and methyl chloride in a process known as the "direct reaction" or the "Rochow-Muller direct process. (encyclopedia.com)
  • A synthetic skin conditioning agent and surfactant belonging to the chemical class of siloxanes and. (paulaschoice.com)
  • Valued for their electrical-insulating properties, chemical stability, and the wide temperature range over which they retain resiliency, silicone rubbers are used mainly in O-rings, heat-resistant seals, caulks, gaskets, electrical insulators, flexible molds, and (owing to their chemical inertness) surgical implants. (britannica.com)
  • Like any plastic polymer, silicones are synthetic and include a mix of chemical additives derived from fossil fuels. (bewellbuzz.com)
  • The Government of Canada is in the process of virtually eliminating cyclic silicones, among other chemical substances. (thefreelibrary.com)
  • Silicones exhibit many useful characteristics, including: Low thermal conductivity Low chemical reactivity Low toxicity Thermal stability (constancy of properties over a wide temperature range of −100 to 250 °C). The ability to repel water and form watertight seals. (wikipedia.org)
  • Silicone fluids are the starting materials for further silicone products which are created by chemical functionalization. (wacker.com)
  • The chemical structures of silicone resins and silicone hybrid resins result in remarkable property profiles that cannot be achieved by other classes of resins. (pcimag.com)
  • We present detailed contact angle data on a variety of different intraocular lens (IOL) materials including polymethyl methacrylate (PMMA), heparin-surfacemodified PMMA, silicones and foldable acrylics, both hydrophilic and hydrophobic. (egms.de)
  • Silicones consist of an inorganic backbone made of alternate silicon and oxygen atoms. (wacker.com)
  • A siloxane is a functional group in organosilicon chemistry with the Si-O-Si linkage. (wikipedia.org)
  • In 1930 chemist J. Franklin Hyde, called the "father of silicone chemistry," met with Eugene Sullivan, vice president and director of research at Corning Glass Works. (encyclopedia.com)
  • The discovery of the structural differences between Kipping's molecules and the ketones means that silicone is no longer the correct term (though it remains in common usage) and that the term siloxane is preferred according to the nomenclature of modern chemistry. (wikipedia.org)
  • This chemistry is used in many consumer applications, such as silicone caulk and adhesives. (wikipedia.org)
  • Mayer H (1999) The chemistry and properties of silicone resins. (springer.com)
  • A.J.O. Lenick, Basic silicone chemistry-a review. (springer.com)
  • A. Colas, J. Curtis, Silicone Biomaterials : History and Chemistry Medical Applications of Silicones Dow Corning Corporation Biomaterials Science , 2nd edn. (springer.com)
  • I want to get the latest chemistry news from C&EN in my inbox every week. (acs.org)
  • Similarly, precursors with three methyl groups can be used to limit molecular weight, since each such molecule has only one reactive site and so forms the end of a siloxane chain. (wikipedia.org)
  • Micro-molecule hydroxyl silicone oil (25-30cp, hydroxyl content :8% also) is the excellence constitution controller of silicone rubber. (bushorchimp.com)
  • Hydroxyl silicone oil (107 room temperature vulcanized silicone rubber) : We are surrogating the MOMENTIVE 107 room-temperature vulcanized silicon rubber, mainly including: YF70C-1500 YF70C-2000 YF70C-5000 YF70C-1M YF70C-2M YF70C-5M YF70C-8M. (bushorchimp.com)
  • On the other hand, the Si-O bond is susceptible to hydrolysis and attack by acids and bases, so silicone plastics and rubbers are relatively weak and readily swollen by hydrocarbon oils. (britannica.com)
  • We have achieved success and goodwill in the industry with our supreme quality range of Silicone Oils. (tradeindia.com)
  • Silicone resins are made by the room-temperature vulcanization ( RTV ) of silicone oils . (mfa.org)
  • The key difference from all the carbon-based plastics we described above is that silicones have a backbone made of silicon . (bewellbuzz.com)
  • You'll also find silicones used in cosmetics and various personal care products to make them soft and smooth. (bewellbuzz.com)
  • A number of the products we offer in our store, Life Without Plastic -such as stainless-steel or glass food containers and bottles-include silicone seals or gaskets to make them airtight and watertight. (bewellbuzz.com)
  • Each day, we unknowingly come into contact with scores of products that contain silicones for the very special properties that they possess. (encyclopedia.com)
  • These 3 silicones are used in their own right, particularly in personal care products, either individually (previously [D.sub.4] was most commonly used, but over the last decade has been supplanted by [D.sub.5]) or as mixtures (cyclomethicones). (thefreelibrary.com)
  • The two firms will independently convert siloxane into downstream silicone products at plants still under construction at adjacent locations. (acs.org)
  • Although there are many potential photoinitiators for these silicones, we prefer those that are oligomeric in nature (oligo = "a few," mers = "units") because "highly flexible" silicones fail to retain many of the "out-gassing," post-UV monomeric photoinitiator by-products. (adhesivesmag.com)
  • So many people used cleaning products such as Johnson's wax or Pledge that when it came time to refinish, everything was contaminated and the refinisher would contaminate his whole shop with silicone in the process. (woodweb.com)
  • With the new silicone film forming agent, DOWSIL™ FA 4003 DM Silicone Acrylate, it is possible to formulate long-wear products that leave skin soft, smooth and supple. (dow.com)
  • Silicone oil is a liquid polymer of siloxane that can be used in products such as lubricants and caulking materials. (drugs.com)
  • Know that there are no FDA-approved injectable silicone products for body contouring, or to increase the size of areas such as the breasts or buttocks. (drugs.com)
  • 2nd edition (1968), page 341, describes how the combination of Si-H-siloxanes with Si-vinylsiloxanes in thepresence of free-radical formers leads to crosslinked products. (patentgenius.com)
  • Low hardness silicone foam sponge open cell silicone rubber sponge foam Product Name Silicone Sponge Sheet Material silicone rubber Thickness 1mm-100mm Length 5m -30m Width 1-3m Surface Smooth or textured Specific Gravity 0.4-0. (bushorchimp.com)
  • Reactive silicone fluids are siloxanes terminated with reactive groups. (wacker.com)
  • As a result, silicones are remarkably stable, and they have the lowest glass-transition temperature (the temperature below which the molecules are locked in a rigid, glassy state) and the highest permeability to gases of any polymer. (britannica.com)
  • While the research indicates that silicones are certainly very stable, they are not completely inert. (bewellbuzz.com)
  • The test results show that these acrylate-silicone blends are highly release-stable against this very aggressive acrylic PSA tape, even at such high aging temperatures and for such long periods of time. (adhesivesmag.com)
  • The test results show that both acrylate-silicone blends are highly release-stable against this very aggressive acrylic PSA tape when UV-cured. (adhesivesmag.com)
  • Silicones are particularly stable and exceptionally resistant to such influences as heat and electromagnetic radiation. (wacker.com)
  • This make silicones much more stable and more resistant to diverse influences. (wacker.com)
  • I have had no fisheyes that I could pin directly to the silicone additive as a result of using it on an as-needed basis. (woodweb.com)
  • One of the simpler silicones due to its less complex molecular structure. (paulaschoice.com)
  • What happens to silicone gaskets (siloxane rubber) in presence of ethylene glycol? (stackexchange.com)
  • The present invention provides an acrylate/silicone pressure-sensitive adhesive tape having a foam backing having improved adhesion to painted surfaces and low temperature performance. (google.es)
  • Our first analysis formulates blends of PC 900 acrylate silicone with two CRA-minus release modifiers - PC 910 and PC 911 (at 5% to 10% addition). (adhesivesmag.com)
  • Modern silicone resins are made with tetraethoxysilane, which reacts in a milder and more controllable manner than chlorosilanes. (newworldencyclopedia.org)
  • Silicone rubber does not react with food or beverages, or produce any hazardous fumes. (bewellbuzz.com)
  • Cheaper alternative to silicone rubber sponge? (stackexchange.com)
  • PH 6-7 Index of refraction 1.40-1.405 Hydroxyl Content 7.5~9.2% Application It can be used as the structural controlling agent for the production of silicone rubber or. (bushorchimp.com)
  • Besides high-consistency (gumstock) silicone rubber which is also the form taken by peroxide-cured material fabricators can purchase addition-cured silicone as liquid silicone rubber (LSR). (mddionline.com)
  • The parent siloxanes include the oligomeric and polymeric hydrides with the formulae H(OSiH2)nOH and (OSiH2)n. (wikipedia.org)
  • Silicones have been available commercially since the 1940's because of their unusual properties, which cannot be attained by traditional polymeric materials. (thefreelibrary.com)
  • The silicone component of the network is preferably the reaction product of a polymeric hydride. (google.com.au)
  • The silicone component of the network is preferably the reaction product of a polymeric hydride group - containing silicone and a polymer containing at least one unsaturated group, preferably a vinyl group. (google.com.au)
  • Cyclic or polymeric silicone reagent was use for the reaction. (nii.ac.jp)
  • Though peroxide is still used, addition-cured, platinum-catalyzed silicones have gained wide acceptance among fabricators because of their faster cure rates, lack of peroxide bloom, and availability in an injectable, liquid form. (mddionline.com)
  • Miscibility and Heat of Mixing of Liquid Polyisobutenes and Silicones, by Allen, Gee and Nicohson, (1960) pp. 8-17. (patents.com)
  • 4. Silicone Fluids are widely used in Flow Control, Temperature Control and Motion Control technologies. (alibaba.com)
  • Above all, silicone fluids from WACKER are ideal for use in all kinds of industries - cosmetics, pharma and textiles, to name but a few. (wacker.com)
  • A key advantage of silicone fluids is their excellent thermal and thermooxidative resistance. (wacker.com)
  • Silicone fluids have no known harmful effects and are transparent liquids that have no taste or odor. (wacker.com)
  • Silicone fluids are often used in the form of aqueous emulsions. (wacker.com)
  • Silicone resins were first discovered by F. Kipping in England in 1904, but were not commercially produced until 1943 by Dow Corning. (mfa.org)
  • Commercially, methyl silicone resins are mainly distributed in solvents. (pcimag.com)
  • An adsorbent for removal of impurities from silicone based solvents is presented. (freepatentsonline.com)
  • The adsorbent is regenerable for repeated use in cleaning silicone based solvents. (freepatentsonline.com)
  • The present invention relates to adsorbents in the use of purifying used silicone-based solvents that are used in the dry cleaning process. (freepatentsonline.com)
  • Concentrated acids, alkalines, and solvents should not be used with silicones. (mddionline.com)
  • A synthetic, silicone-enhanced polymer that occurs from combining isopropyl titanium triisostearate. (paulaschoice.com)
  • Specialized, synthetic crosslinked siloxane that functions as a film-forming agent and polymer. (paulaschoice.com)
  • Implants are soft silicone sacs, inflated with either saline solution (salt water) or a synthetic silicone gel. (sharecare.com)
  • We treat silicones as plastics like any other, given that they have plastic-like properties: flexibility, malleability, clarity, temperature resistance, and water resistance. (bewellbuzz.com)
  • Silicone-polycarbonate block copolymers have been recognized for their low temperature ductility and flame retardance. (google.com)
  • The experiments were carried out by exposing three intact explanted silicone gel-filled implants to 10% soy oil in a water-based mixture or to soy oil alone for 24 hours at body temperature. (fda.gov)
  • Publications] T.Koike: 'Silicone as organosilicon reagent 2. (nii.ac.jp)
  • The present invention relates to silicone polycarbonate block copolymers and polycarbonate blends thereof having reduced haze and to a method for making. (google.com)
  • DESCRIPTIONJS-333 silicone powder is a white powder consisting of silsesquioxane crosspolymer. (allproducts.com)
  • Silicone is at the core of silicone sealants - the most widely used type in the construction industry. (buildingclean.org)
  • This conversion is illustrated by the combustion of hexamethylcyclotrisiloxane: ((CH3)2SiO)3 + 12 O2 → 3 SiO2 + 6 CO2 + 9 H2O Strong base degrades siloxane group, often affording siloxide salts: ((CH3)3Si)2O + 2 NaOH → 2 (CH3)3SiONa + H2O This reaction proceeds by production of silanols. (wikipedia.org)
  • This geometric consideration is the basis of the useful properties of some siloxane-containing materials, such as their low glass transition temperatures . (wikipedia.org)
  • Silicones (or silicon-based materials) are an integral part of daily life. (encyclopedia.com)
  • The second-largest group of silicone materials is based on silicone resins, which are formed by branched and cage-like oligosiloxanes. (wikipedia.org)
  • The second largest group of silicone materials is based on silicone resins. (newworldencyclopedia.org)
  • Odorless and tasteless, silicones do not support bacteria growth and will not stain or corrode other materials. (mddionline.com)
  • Silicone emulsions are also used as water-repellent agents for protecting textiles or building and insulation materials against water and damp. (wacker.com)
  • The FDA is monitoring reports of adverse events associated with the use of injectable silicone and other unapproved materials and will update the public if significant new information becomes available. (drugs.com)