Class 562/578 - Polycarboxylic

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein the acid contains more than one carboxyl
No. of patents: 35
Last issue date: 04/29/2003

Number	Title	Issue Date
6555078	Method of preparing lithium salts The present invention provides an inexpensive process for the preparation of lithium salts of formula LiX having a desired or required level of purity using lithium chloride and lithium sulfate. In the process of the invention, a lithium salt selected fro...	04/29/2003
6528668	Methods for making 2-(ω-alkoxycarbonylalkanoyl)-4-butanolide, ester of ω-hydroxy-(ω-3)-ketoaliphatic acid, and derivatives thereof Methods for making 2-(ω-alkoxycarbonylalkanoyl)-4-butanolide and derivatives thereof, esters of ω-hydroxy-(ω-3)-ketoaliphatic acid and derivatives thereof, which are useful as a variety of synthetic raw materials and intermediates, and are prepared as ...	03/04/2003
6252105	Synthesis of low-fluoride organic compounds Organic compounds, e.g. fluorinated organic compounds such as fluorinated carboxylic acids or fluorinated carboxylic acid chlorides, may contain small amounts of carboxylic acid fluorides, hydrogen fluoride or hydrolyzable fluoride, which during the prepa...	06/26/2001
5876916	Pyruvate compounds and methods for use thereof The invention comprises a novel pyruvate compound for the treatment or prevention of reperfusion injury following ischemia, diabetic effects, cholesterol levels, injured organs, ethanol intoxication or as a foodstuff. The novel pyruvate compound is partic...	03/02/1999
5766439	Production and recovery of organic acids A process is described for producing organic acids such as lactic acid. The process includes the steps of producing lactic acid by fermentation, resulting in an aqueous fermentation broth containing lactic acid, and adding a calcium base, such as calcium ...	06/16/1998
5426219	Process for recovering organic acids An organic acid can be recovered from a fermentation broth by clarifying the broth to remove at least a substantial portion of the impurities therein, producing a clarified feed; acidulating the clarified feed by adding a quantity of a mineral acid effect...	06/20/1995
5426218	Bis (tetraalkylammonium) oxalate A poly(methylene oxalate) polymer [poly(oxy(1,2-dioxo-1,2-ethanediyl)oxymethylene)], a bis(tetrabutylammonium)oxalate salt, methods of synthesis thereof and methods of use. Poly(methylene oxalate) is insoluble in all common organic solvents, does not...	06/20/1995
5274051	Carbonyl containing compounds via radical grafting Novel carbonyl containing compositions are prepared by contacting, in the presence of a free radical initiator, a first compound selected from the group consisting of saturated hydrocarbons, substituted saturated hydrocarbons, polymers and mixtures thereo...	12/28/1993
5214197	2,4-dihydroxyadipic acid derivative A novel 2,4-dihydroxyadipic acid derivative of the formula: ##STR1## wherein R1 and R4 are the same or different and each a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or a silyl group, and R2 and R...	05/25/1993
4927966	2-mercaptomethylglutaric acid derivatives New compounds having utility for enhancing the activity of antifolates are disclosed of the formula: ##STR1## wherein X is selected from hydrogen ##STR2## and R"--; R' is selected from alkyl, alkenyl, alkynyl, substituted and unsubstituted ...	05/22/1990
4849542	Process for the preparation of oxo-alkanedioic acids or diesters thereof A process for the preparation of oxo-alkanedioic acids or diesters thereof by reacting an alkenoic acid or an ester thereof, at least one of the C atoms of the carbon carbon double bond carrying a H atom, with CO and H2 in the presence of a cat...	07/18/1989
4800231	Keto-diesters production Novel keto-diesters are produced by a 2:1 condensation of lower alkyl esters of ଱,ଲ-ethylenically unsaturated carboxylic acids and aldehydes having two hydrogen atoms as portions of a formyl group, in the presence of a thiazolium salt as catal...	01/24/1989
4795632	Preparations for washing and rinsing hair Preparations for washing or rinsing hair contain polyaldehydocarboxylic acids having an average molecular weight of from 600 to 10,000, a carboxyl group content of from 5 to 9 and preferably from 7 to 9 and an aldehyde group content of from 1 to 5 and pre...	01/03/1989
4736044	Boron compounds to inhibit formation of tar during the "ene" reaction of an ethylenically unsaturated alpha, beta dicarboxylic acid compound and an ethylenically unsaturated hydrocarbon A process for the production of a substituted alpha, beta dicarboxylic acid compound substantially free of tar and other resinous reaction byproducts comprising the reaction at conditions favoring the ENE reaction of an ethylenically unsaturated hydrocarb...	04/05/1988
4655975	Solid chelating poly(carboxylate and/or sulfonate)peroxyhydrate bleaches Polycarboxylates such as disodium diglycolate can form peroxyhydrates becoming a solid source of hydrogen peroxide. Upon dissolution in water, these poly(carboxylates and/or sulfonates) both form a chelant and hydrogen peroxide. This combination is partic...	04/07/1987
4578503	Alkylated or alkenylated malonic acid or its derivatives having a fluorine An alkylated or alkenylated malonic ester having a fluorine containing aliphatic substituent and derivatives thereof as expressed by the following general formula: ##STR1## where Rf is a fluorine containing aliphatic group, R is an aliphat...	03/25/1986
4380646	Method for the N-acylation of aminocarboxylic acids A process is disclosed for the prparation of an acylated aminocarboxylic acid which comprises contacting an aminocarboxylic acid, its alkali metal or alkaline earth metal salt with a low alkyl carboxylic acid ester of the formula wherein R1 rep...	04/19/1983
4377709	Process for the manufacture of 5-oxoalkanoic acids 5-Oxoalkanoic acids are prepared by addition of a ketone containing at least one hydrogen atom in the ଱-position with regard to the keto group, to an ଱,ଲ-unsaturated acid. As catalysts secondary amines are present....	03/22/1983
4366076	Corrosion inhibited compositions Corrosion-inhibited compositions are described comprising a functional fluid in contact with a ferrous metal and, as corrosion inhibitor, a compound having the formula: ##STR1## wherein X is H, an alkali- or alkaline earth metal, NH4, the ...	12/28/1982
4304927	Carboxylic acids, esters and salts of polyfluoroacetone Compounds of the structure ##STR1## wherein X is --F or Cl and each R is independently --H, --CH3, --C2 H5, --CH2 CH2 CH3, --CH2 CH2 CH2 CH3...	12/08/1981
4301186	Ammonium salts of ଱-ketocarboxylic acids This invention relates to new ammonium salts of ଱-ketocarboxylic acids, to their use for the production of amines in situ by photochemical decomposition and to photochemically hardenable coating compositions containing these ammonium salts....	11/17/1981
4259518	3-Methyl-5-keto-଱,ω-alkenedioic acids and esters The invention concerns new 3-methyl-5-keto-଱,ω-alkene-dioic acids of the general formula ##STR1## wherein the double bond is in one of the positions indicated by the broken lines, R1 and R2 independently of one another ar...	03/31/1981
4239644	Liquid peroxide composition A liquid peroxide composition comprising dicumyl peroxide and a dicumyl peroxide derivative having one nucleus substituted by an alkyl group having 1 to 3 carbon atoms is disclosed. This peroxide composition can easily be handled because it is liquid, and...	12/16/1980
4224457	Process for manufacturing optically active sulfur-containing carboxylic acid Process for manufacturing optically active sulfur-containing carboxylic acid which comprises reacting a racemic acid of the formula ##STR1## with an optically active amine to form the amine salt, and then resolving the isomers and recovering the opti...	09/23/1980
4217290	Process for preparing bifunctional aliphatic organic compounds This invention consists of a process for preparing bifunctional aliphatic organic compounds of at least 6 carbon atoms, wherein a cycloaliphatic oxyhydroperoxide is reacted with an alpha-olefine having its double bond activated by a conjugate electron-att...	08/12/1980
4189597	11-(2-Hydroxyethylthio)prostenoic acid E series derivatives This disclosure describes certain 11-(2-hydroxyethylthio)-9-keto-prostenoic acid E series derivatives, and their intermediates, useful as bronchodilators and inflammatory medeator release inhibitors....	02/19/1980
4172208	5-Bromo-5,5-dicarboxyethylvalaraldehyde diethyl acetal The compound of the formula: ##STR1## is useful as an intermediate to prepare a compound having the generic formula ##STR2## wherein X is selected from groups to provide tetrahydropyran type compounds, 1,4 dioxane type compounds or tetrahyd...	10/23/1979
4146543	Reaction of maleic anhydride with active methylene or methine containing compounds Novel polyfunctional compounds and a process for their preparation are disclosed. These compounds and their alkali metal salts are useful metal sequestrants and/or detergent builders. Selected compounds are also intermediates useful in the syntheses of ac...	03/27/1979
4102701	Plaster compositions containing oxo-polycarboxylic acids as a set retarder Oxo-polycarboxylic acids act as set control agents, preferably as set retarders for plasters. Examples of usable acids are 2,2,6,6-tetra(ଲ-carboxyethyl)cyclohexanone, 2,2-di(ଲ-carboxyethyl)-3,5,5-trimethylcyclohexanone or 3-acetyl-3(...	07/25/1978
4096177	Process for the preparation of p. isobutyl-hydratropic A process for the synthesis of Ibuprofen, p - isobutyl hydrotropic acid is described based upon the aromatization reaction which takes place when a dialkyl ଱-acetyl-଱-[(5-methyl-3-oxo)-hexyl]-଱'-methyl-succinate (II) is heated at te...	06/20/1978
4085274	Process for preparing 4-oxopentadecanedioic acid 4-OXOPENTADECANEDIOIC ACID IS PREPARED BY OXIDIZING A ଱-CYCLODODEC-1-ENYLPROPIONIC ACID DERIVATIVE HAVING ONE OF THE FOLLOWING CHEMICAL FORMULAE AT ITS ETHYLENIC DOUBLE BOND WITH OZONE. ##STR1## The compound is useful as an intermediate for a m...	04/18/1978
4008270	Process for preparing 2-(substituted phenyl)propionic acids Preparing 2-(substituted phenyl)propionic acids by heating a mixture containing succinic acid anhydride with a 2-(2-oxo-3-cyclohexenyl)propionic acid derivative and then recovering the 2-(2-substituted phenyl)propionic acid derivative from the reaction ...	02/15/1977
3963775	Process for the production of 3-oxoglutaric acid A feasible process for the production of 3-oxoglutaric acid is disclosed wherein ketene and phosgene are reacted in a molar ratio of ketene to phosgene of less than 2 in an organic solvent possessing a dielectric constant at 20°C between 2 and 22 and rea...	06/15/1976
3939202	Process for preparing polyene compounds Polyene compounds of the formula: ##EQU1## wherein R' is protected or unprotected hydroxyl or a group of the formula: ##EQU2## (in which R" and R"' are each carboxyl or a group convertible into carboxyl on hydrolysis), m is a positive integer an...	02/17/1976
3936498	Detergent builders A detergent builder composition having the formula: ##EQU1## wherein R is --CH2 --CH2 --COOX, X being a member selected from the class consisting of hydrogen, alkali metals, ammonium and substituted ammonium....	02/03/1976

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Class 562/578 - Polycarboxylic