Maleic anhydride (ML), succinic anhydride (SU) and HP at different conditions and variable pH values were used for modification of proteins. (biomedcentral.com)
Herein, we have used epoxidized olive oil (EOO), obtained from cooking olive oil (COO), and various cyclic anhydrides (such as phthalic anhydride PA, maleic anhydride MA, and succinic anhydride SA) as raw materials for the preparation of new bio-based polyesters. (bvsalud.org)
Acetic1
WO 2006/135881 describes quaternized ammonium salts prepared by condensation of a hydrocarbyl-substituted acylating agent and of an oxygen- or nitrogen-containing compound with a tertiary amino group, and subsequent quaternization by means of hydrocarbyl epoxide in the presence of stoichiometric amounts of an acid, especially acetic acid. (trea.com)
Epoxy1
Vinyl ester resin, or often just vinyl ester, is a resin produced by the esterification of an epoxy resin with acrylic or methacrylic acids. (robertvanogallery.com)
Inexpensive1
We develop sustainable, durable and high-performance bio-lubricants from inexpensive and sustainable renewables, including non-food biomass and fat, natural oils or waste cooking oils. (udel.edu)
Method1
All of the non-bovine animal proteins were modified by 3-hydroxyphthalic anhydride (HP), using the same method and the same conditions as 3HP-β-LG. (biomedcentral.com)
Synthetic2
The water soluble polymers market encompasses several categories, including starch, cellulose ethers, polyvinylacetate, polyvinyl alcohol and other synthetic water soluble polymers. (niir.org)
Polyester resins are unsaturated synthetic resins formed by the reaction of dibasic organic acids and polyhydric alcohols. (robertvanogallery.com)
Development1
Here we sought to replace bovine protein with an animal protein of non-bovine origin and substitute HP with another anhydride for the development of anti-HIV microbicide for preventing HIV sexual transmission. (biomedcentral.com)
Hydroxyl groups3
A catalyst composition comprises the reaction product of an alkoxide or condensed alkoxide of a metal M, selected from titanium, zirconium, hafnium, aluminium, or a lanthanide, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base, wherein the molar ratio of base to 2-hydroxy carboxylic acid is in the range 0.01 - 0.79:1. (allindianpatents.com)
In 1405/DEL/97, an esterification catalyst comprising the reaction product of an alkoxide or condensed alkoxide of titanium or zirconium, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base. (allindianpatents.com)
The catalyst of the invention is the reaction product of a titanium, zirconium, hafnium, aluminium, or ianthanide alkoxide or condensed alkoxide, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base. (allindianpatents.com)
Acetic2
Derivatives of acetic acid with one or more fluorines attached. (lookformedical.com)
A very strong halogenated derivative of acetic acid. (lookformedical.com)
Fatty acids4
No. 5,126,393 to prepare a polyester polyol from a monocarboxylic acid (including unsaturated fatty acids), aliphatic dicarboxylic acid, aromatic or cycloaliphatic dicarboxylic acid, aliphatic or cycloaliphatic diol and a trihydric or tetrahydric alcohol. (justia.com)
No. 6,187,384 (from aliphatic or cycloaliphatic alcohols and aliphatic or cycloaliphatic saturated or unsaturated carboxylic acids which are subsequently reacted with fatty acids and isocyanates). (justia.com)
Develop various selective C-C coupling reaction chemistries via a slate of catalysts to build the carbon chain length starting from furans and long-chain functionalized molecules, such as fatty acids or their derivatives. (udel.edu)
and (4) ketonic decarboxylation of fatty acids followed by aldol condensation. (udel.edu)
Dicarboxylic2
A group of compounds that has the general structure of a dicarboxylic acid-substituted benzene ring. (lookformedical.com)
A disadvantage with such compositions is that the use of aromatic dicarboxylic acids may result in reduced UV- resistance and outdoor durability. (justia.com)
Carboxylic acid1
Examples of such groups include carboxylic acid groups which, if necessary, are neutralised with bases (usually ammonia or amines) to form anionic salt groups. (justia.com)
Compounds4
Preferably R1 contains 1 to 6 carbon atoms and useful condensed alkoxides include the compounds known as polybutyl titanate, polyisopropyl titanate and polybutyl zirconate. (allindianpatents.com)
The libraries include a wide range of compounds from pure organics to industrial compounds. (spectrabase.com)
Chemical compounds derived from acids by the elimination of a molecule of water. (lookformedical.com)
Maleates are a class of organic compounds that are used in various medical applications, including as a preservative in injectable medications and as a chelating agent to remove heavy metals from the body. (lookformedical.com)
Derivatives1
The acid itself, as well as the derivatives that are broken down in the body to the acid, are highly toxic substances, behaving as convulsant poisons with a delayed action. (lookformedical.com)
Salts1
Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain a 1,4-carboxy terminated aliphatic structure. (lookformedical.com)
Ester2
It is used in acid catalyzed reactions, especially those where an ester is cleaved in peptide synthesis. (lookformedical.com)
Uralkyd resins are polyurethane polymers formed from reactants comprising a polyisocyanate (normally a diisocyanate) and an unsaturated fatty acid residue-containing ester polyol (normally a diol). (justia.com)
Carbon1
Preferably, the alkoxide has the formula M(OR)X in which M is titanium, zirconium, hafnium, aluminium, or a Ianthanide, R is an alkyl group and x is the valency of the metal M. More preferably R contains 1 to 6 carbon atoms and particularly suitable alkoxides include tetraisopropoxy titanium, tetra-n-butoxy titanium, tetra-n-propoxy zirconium, tetra-n-butoxy zirconium and aluminium tri-sec-butoxide. (allindianpatents.com)
Suitable1
We have now discovered certain fatty acid modified polyester polyols which are suitable for the preparation of water-dispersible air-drying uralkyd resins for use in one component coating systems which show improved weather and UV resistance as shown for example by the decay of gloss units over time. (justia.com)
The preparation of polyester polyols for use in solvent based lacquers are also described in DE 2806497 A1 (from a cycloaliphatic acid, trihydric alcohol, unsaturated fatty acid and a monocarboxylic acid) and in U.S. Pat. (justia.com)
Range2
In that patent, the preferred amount of base for monobasic 2-hydroxy acids such as lactic acid, is in the range 0.8 to 1.2 mole per mole of 2-hydroxy acid. (allindianpatents.com)
In the case of citric acid (a tribasic acid), the preferred amount is in the range 1 to 3 moles base per mole of 2-hydroxy acid. (allindianpatents.com)