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| Number | Title | Issue Date |
| 7312272 | Food coating substance containing a softener-free aqueous copolymer poly(vinyl ester) dispersion, production and use thereof A novel food coating substance comprising a plasticizer-free aqueous copolymer poly(vinyl ester) dispersion of emulsion polymer, emulsifier, protective colloid and optionally other stabilizers is outstandingly suitable for the surface treatment or surface coating of... | 12/25/2007 |
| 6222069 | Method for purifying adipic acid in water The invention discloses a method for purifying adipic acid in water. More precisely it discloses an improvement in adipic acid crystallization or recrystallization in water, characterised in that the said crystallization or recrystallization is effected i... | 04/24/2001 |
| 6103935 | Process for production of fumaric acid by isomerization of maleic acid The present invention relates to a process for the production of fumaric acid by the isomerization of maleic acid at high conversions which comprises heating maleic acid in the presence of phosphoric acid at a temperature sufficient to isomerize the malei... | 08/15/2000 |
| 5929255 | Process for coproducing fumaric acid and maleic anhydride The present invention provides a process for recovering fumaric acid formed as a by-product during the production of maleic anhydride so that both fumaric acid and maleic anhydride are obtained. The process of the present invention further eliminates the ... | 07/27/1999 |
| 5847204 | Process for producing an iridium solution and use of same as catalyst An iridium-based solution is prepared by contacting components in a liquid phase containing (a) a carbonylated iridium compound, (b) hydriodic acid, a precursor of such an acid, or mixture thereof, and (c) a solvent; under a total pressure of between 1 an... | 12/08/1998 |
| 5414115 | Isomerization of carboxylic acids An improved process for the isomerization of saturated alkyl carboxylic acids is obtained by using aluminum iodide or aluminum bromide promoted rhodium or iridium catalysts.... | 05/09/1995 |
| 5218144 | Process for the manufacture of adipic acid A process for the preparation of adipic acid from pentenoic compounds by hydrocarboxylation using an iridium catalyst, an iodide promoter, water, carbon monoxide and a carboxylic acid solvent.... | 06/08/1993 |
| 5166421 | Process for the manufacture of adipic acid A process for the manufacture of adipic acid by reacting 1,3-butadiene or an allylic butenol or the like with carbon monoxide and water using a rhodium catalyst and an HI or HBr promoter, removing adipic acid from the reaction mixture, and reacting at lea... | 11/24/1992 |
| 4939298 | Isomerization of carboxylic acids Isomerization of branched saturated alkyl carboxylic acids to linear or isomeric branched alkyl carboxylic acids, or vice versa, by heating in the presence of a iodide or bromide promoted rhodium catalyst and carbon monoxide.... | 07/03/1990 |
| 4918226 | Process for converting formate esters to carboxylic acids A process for converting formic acid esters or transesterification products thereof to carboxylic acids comprising contacting a formic acid ester of the formula (HCOO)n --R where R is aliphatic, cycloaliphatic or aralkyl and n is 1 or 2 with a ... | 04/17/1990 |
| 4448702 | Freezing-point-lowering composition and method The freezing point of an aqueous system is lowered by adding to the system a freezing point lowering quantity of at least one and preferably two or more water soluble salts of dicarboxylic acids having at least three carbon atoms, specifically a dicarboxy... | 05/15/1984 |
| 4182806 | Process for the manufacture of salts of poly-alpha-hydroxyacrylic acids Process for the manufacture of a salt of a poly-alpha-hydroxyacrylic acid, which salt contains monomeric units of the formula: ##STR1## in which R1 and R2 independently represent hydrogen or an alkyl group containing from 1 to 3... | 01/08/1980 |
