Isocyanates: Organic compounds that contain the -NCO radical.Cyanates: Organic salts of cyanic acid containing the -OCN radical.Polyurethanes: A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams.Toluene 2,4-Diisocyanate: Skin irritant and allergen used in the manufacture of polyurethane foams and other elastomers.Rhodium: Rhodium. A hard and rare metal of the platinum group, atomic number 45, atomic weight 102.905, symbol Rh. (Dorland, 28th ed)PaintAir Pollutants, Occupational: Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.ButylaminesTear Gases: Gases that irritate the eyes, throat, or skin. Severe lacrimation develops upon irritation of the eyes.Indolizidines: Saturated indolizines that are fused six and five-membered rings with a nitrogen atom at the ring fusion. They are biosynthesized in PLANTS by cyclization of a LYSINE coupled to ACETYL COENZYME A. Many of them are naturally occurring ALKALOIDS.Occupational Exposure: The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.Automobiles: A usually four-wheeled automotive vehicle designed for passenger transportation and commonly propelled by an internal-combustion engine using a volatile fuel. (Webster, 1973)Inhalation Exposure: The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.Environmental Monitoring: The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.Mustard Compounds: Strong alkylating and immunosuppressive agents whose biological activity is based on the presence of bis(2-chloroethyl)- groups. Although otherwise structurally diverse, the compounds have in common the capacity to contribute alkyl groups to DNA. They are generally highly toxic but include among their number many widely used and effective antineoplastic agents.Alkynes: Hydrocarbons with at least one triple bond in the linear portion, of the general formula Cn-H2n-2.Occupational Diseases: Diseases caused by factors involved in one's employment.Alveolitis, Extrinsic Allergic: A common interstitial lung disease caused by hypersensitivity reactions of PULMONARY ALVEOLI after inhalation of and sensitization to environmental antigens of microbial, animal, or chemical sources. The disease is characterized by lymphocytic alveolitis and granulomatous pneumonitis.Cyclization: Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Molecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Stereoisomerism: The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Catalysis: The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.Chemical Industry: The aggregate enterprise of manufacturing and technically producing chemicals. (From Random House Unabridged Dictionary, 2d ed)Waxes: A plastic substance deposited by insects or obtained from plants. Waxes are esters of various fatty acids with higher, usually monohydric alcohols. The wax of pharmacy is principally yellow wax (beeswax), the material of which honeycomb is made. It consists chiefly of cerotic acid and myricin and is used in making ointments, cerates, etc. (Dorland, 27th ed)InkLocusta migratoria: A species of migratory Old World locusts, in the family ACRIDIDAE, that are important pests in Africa and Asia.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Urethane: Antineoplastic agent that is also used as a veterinary anesthetic. It has also been used as an intermediate in organic synthesis. Urethane is suspected to be a carcinogen.Chemistry, Organic: The study of the structure, preparation, properties, and reactions of carbon compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Encyclopedias as Topic: 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)Sperm Whale: The species Physeter catodon (also called Physeter macrocephalus), in the family Physeteridae. The common name is derived from the milky wax substance in its head (spermaceti). The species also produces an intestinal secretion AMBERGRIS, which was previously used in perfumes. The sperm whale is the largest toothed MAMMAL in the world.Organic Chemistry Phenomena: The conformation, properties, reaction processes, and the properties of the reactions of carbon compounds.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Terminology as Topic: The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.Alkanes: The generic name for the group of aliphatic hydrocarbons Cn-H2n+2. They are denoted by the suffix -ane. (Grant & Hackh's Chemical Dictionary, 5th ed)Free Radicals: Highly reactive molecules with an unsatisfied electron valence pair. Free radicals are produced in both normal and pathological processes. They are proven or suspected agents of tissue damage in a wide variety of circumstances including radiation, damage from environment chemicals, and aging. Natural and pharmacological prevention of free radical damage is being actively investigated.Spectrometry, Mass, Electrospray Ionization: A mass spectrometry technique used for analysis of nonvolatile compounds such as proteins and macromolecules. The technique involves preparing electrically charged droplets from analyte molecules dissolved in solvent. The electrically charged droplets enter a vacuum chamber where the solvent is evaporated. Evaporation of solvent reduces the droplet size, thereby increasing the coulombic repulsion within the droplet. As the charged droplets get smaller, the excess charge within them causes them to disintegrate and release analyte molecules. The volatilized analyte molecules are then analyzed by mass spectrometry.Hydrogen Bonding: A low-energy attractive force between hydrogen and another element. It plays a major role in determining the properties of water, proteins, and other compounds.Volatile Organic Compounds: Organic compounds that have a relatively high VAPOR PRESSURE at room temperature.CD-ROM: An optical disk storage system for computers on which data can be read or from which data can be retrieved but not entered or modified. A CD-ROM unit is almost identical to the compact disk playback device for home use.Blood Stains: Antigenic characteristics and DNA fingerprint patterns identified from blood stains. Their primary value is in criminal cases.PaperProtein Sorting Signals: Amino acid sequences found in transported proteins that selectively guide the distribution of the proteins to specific cellular compartments.Reagent Kits, Diagnostic: Commercially prepared reagent sets, with accessory devices, containing all of the major components and literature necessary to perform one or more designated diagnostic tests or procedures. They may be for laboratory or personal use.Videodisc Recording: The storing of visual and usually sound signals on discs for later reproduction on a television screen or monitor.Polyvinyl Alcohol: A polymer prepared from polyvinyl acetates by replacement of the acetate groups with hydroxyl groups. It is used as a pharmaceutic aid and ophthalmic lubricant as well as in the manufacture of surface coatings artificial sponges, cosmetics, and other products.Povidone: A polyvinyl polymer of variable molecular weight; used as suspending and dispersing agent and vehicle for pharmaceuticals; also used as blood volume expander.Acrylic ResinsPolyethylene Glycols: Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.Coated Materials, Biocompatible: Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.Iodine Isotopes: Stable iodine atoms that have the same atomic number as the element iodine, but differ in atomic weight. I-127 is the only naturally occurring stable iodine isotope.
  • 2. The method of claim 1, further comprising the step of catalyzing the reaction of said reactive functionality of said bio-compatible polymeric substrate with said at least one reactive isocyanate functional group at said first end of said hydrophilic spacer in the presence of dibutyltindilaurate. (google.co.uk)
  • Polymeric release agents having functional groups such as carboxy, hydroxy, epoxy, amino, isocyanate, thioether or mercapto groups are applied to a heated fuser member in an electrostatic reproducing apparatus to form thereon a thermally stable, renewable, self-cleaning layer having excellent toner release. (google.com.au)
  • The functional polymeric fluids interact with the fuser member in such a manner as to form a thin, thermally stable interfacial barrier at the surface of the fuser member while leaving an outer film or layer of unreacted release fluid. (google.com.au)
  • The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations P1 obtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of. (google.es)
  • 23 . The process of claim 19 , wherein said water-absorbing polymeric formations P 1 are obtained by polymerization of ethyhlenically unsaturated acid-functional monomers or salts thereof in the presence of triallyl isocyanurate as crosslinker. (google.es)
  • Cambond have pioneered a new process based on the discovery that biomass such as algae and Distiller's Dry Grains and Solubles (DDGS) , can be crosslinked by isocyanate-containing crosslinking agents, to form a water resistant polymeric network. (cam.ac.uk)
  • The most widely used isocyanates employed in polyurethane production are toluene diisocyanate (TDI) and polymeric isocyanate (PMDI). (madehow.com)
  • Characteristic of other isocyanates, it reacts with amines to give ureas. (wikipedia.org)
  • A catalyst-free N-tert -butyloxycarbonylation of amines in water gives N-t -Boc derivatives chemoselectively without any side products (such as isocyanate, urea, N,N -di- t -Boc). (organic-chemistry.org)
  • A simple and efficient protection procedure is general and regioselective for the preparation of mono- N -Boc, N -Cbz, N -Fmoc or N -Alloc aromatic amines in high yield without affecting aliphatic amino groups and other functionalities. (organic-chemistry.org)
  • New, stable amino-protecting reagents, Boc-DMT and Fmoc-DMT, were prepared, and found to be useful for the introduction of Boc and Fmoc groups into amines. (organic-chemistry.org)
  • The reproducibility of the electronic transport measurements obtained gives an idea of ​​the formation of a stable metal-molecule bond and geometrically better defined than when other functional groups of anchorage more widely studied such as thiols, amines, pyridines or isocyanates are used. (icmab.es)
  • Soluble synthetic resins which are free from monomeric amines and have NH bonds are of considerable industrial interest as crosslinkable binders for coatings and impregnations since systems which can be dilutedwith water can be built up by salt formation of the basic functional groups, and furthermore the high reactivity of the NH bonds is available for crosslinking reactions. (patentgenius.com)
  • The simplest, most common and versatile techniques for crosslinking or labeling peptides and proteins such as antibodies involve the use of chemical groups that react with primary amines (-NH2). (thermofisher.com)
  • In fact, there are numerous synthetic chemical groups that will form chemical bonds with primary amines. (thermofisher.com)
  • In substitutive nomenclature, the prefix 'amino-' is placed before the name of the parent compound to denote the functional group in high molecular amines. (chemicalland21.com)
  • Primary amines contain the functional group -NH 2 (called amino group) and are converted into secondary and tertiary amines if heated with alkyl or aryl iodides. (chemicalland21.com)
  • The clear ink carrier composition can be a fatty amide-based material and/or a combination of isocyanate-derived resins in which the order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. (google.com.au)
  • 9. The phase change ink composition of claim 8 further comprising the at least one alcohol in the mixed urethane/urea resin is selected from the group of alcohols consisting of a monohydric aliphatic alcohol, a monohydric aromatic alcohol, a monohydric aliphatic/aromatic alcohol, a monohydric fused ring alcohol, and a polyol and mixtures thereof. (google.com.au)
  • 10. The phase change ink composition of claim 9 further comprising the alcohol in the mixed urethane/urea resin is selected from the group consisting of hydroabietyl alcohol, octylphenol ethoxylate and octadecyl alcohol. (google.com.au)
  • The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane and mixed urethane/urea molecules in the final resin product. (justia.com)
  • Of these components, water is a particular concern in polyurethane systems because it can deactivate catalysts by hydrolysis, and can react with free isocyanate to eventually form polyurea with a carbon dioxide (CO 2 ) byproduct (gassing). (adhesivesmag.com)
  • The most common method of classification for coatings is generic type, which refers to the chemical attribute- most often the resin type-that is unique to a group of coatings. (scribd.com)
  • The isocyanate-derived resin materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks. (justia.com)
  • Both PF resins and isocyanate resin can be obtained from other sources. (ncsu.edu)
  • Published unexamined Japanese Patent Application No. (hereinafter referred to as JP-A) 2000-171990 discloses a photoreceptor having a resin layer including a hardened siloxane resin having a charge transport group, which has a three-dimensional network structure. (patent-de.com)
  • Aniline is used as an intermediate in many different fields of applications, such as isocyanates, rubber processing chemicals, dyes and pigments, agricultural chemicals and pharmaceuticals. (nii.ac.jp)
  • A preferred spacer is an isocyanate end-blocked poly(ethylene oxide). (google.co.uk)
  • We have previously reported that star shaped poly(ethylene oxide-stat-propylene oxide) macromers with 80% EO content and isocyanate functional groups at the distal ends [NCO-sP(EO-stat-PO)] can be used to generate coatings that are non-adhesive but easily functionalized for specific cell adhesion. (sigmaaldrich.com)
  • Engineering polyesters, such as poly (ethylene terephthalate) (PET) and poly (butylene terephthalate) (PBT), constitute a group of engineering thermoplastics. (intechopen.com)
  • However, this group is now expanded by new members of the polyester family, that is, poly (trimethylene terephthalate) (PTT) and poly (ethylene‐2, 6‐naphthalate) (PEN). (intechopen.com)
  • The use of water-dispersible poly-isocyanates as a crosslinking component of 2K PUD for floor coating applications is a somewhat newer technology that is growing in popularity. (pcimag.com)
  • In organic synthesis , functional group interconversion is one of the basic types of transformations. (wikipedia.org)
  • He has been awarded an Imperial-CSC scholarship (2013-2016) and his PhD research focuses on the design and synthesis of functional block copolyesters, using a combination of ring-opening polymerization and ring-opening copolymerization methods. (rsc.org)
  • He joined the Williams research group in 2012, working on the synthesis of new catalysts for ROCOP (CO 2 -epoxide and epoxide-anhydride) and developing the new switch catalysis. (rsc.org)
  • A vapor-catalyzed, isocyanate-mediated surface immobilization scheme is used to attach bioactive small molecules, natural products and small molecules derived from diversity-oriented synthesis pathways. (broadinstitute.org)
  • Price does not include the cost of biopolymer synthesis and, if deemed necessary, biopolymer modification to introduce additional functional groups, extra linkers, and/or spacers. (biosyn.com)
  • TDI is produced by chemically adding nitrogen groups on toluene, reacting these with hydrogen to produce a diamine, and separating the undesired isomers. (madehow.com)
  • Robust Organic Radical Molecular Junctions Using Acetylene Terminated Groups for C-Au Bond Formation. (icmab.es)
  • Much of the research aims to develop a molecular-level understanding in these systems, and hence the group uses of a variety of molecular probes. (stanford.edu)
  • Systems currently under study in the group include functionalization of semiconductor surfaces, mechanisms and control of atomic layer deposition, molecular layer deposition, nanoscale materials for light absorption, interface engineering in photovoltaics, catalyst and electrocatalyst deposition. (stanford.edu)
  • molecular weight containing the functional group -N=C=O. (cdc.gov)
  • This product consists of oligomeric units typically containing 40-50 butadiene molecules bonded together, with each end of the chain terminated with a hydroxyl [OH] group: R-45HTLO has a functionality of 2.4-2.6, which means that there is (approximately) one additional hydroxyl group located along the chain for every two oligomeric units. (wikipedia.org)
  • The haloalkanes have the general formula R-X where R- represents some alkyl or aryl group and -X represents one of the members of the halogen family: fluorine, chlorine, bromine and/or iodine. (3rd1000.com)
  • Among the most common catalyst deactivating components in typical polyurethane formulations are water (hydrolysis), pigment (absorption), solvents (solubility) and acid groups (formation of inactive salts). (adhesivesmag.com)