Matches 1 - 44 out of 44


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8703999 Hydrocarboxylation of methylene dipropionate in the presence of propionic acid and a heterogeneous catalyst  
Disclosed is a process for the production and purification of glycolic acid or glycolic acid derivatives by the carbonylation of methylene dipropionate in the presence of a solid acid catalyst and...
7915446 Catalyst and process for the production of acetic acid  
A catalyst and process for the production of acetic acid by the carbonylation of methanol and/or a reactive derivative thereof. The catalyst system comprises an iridium carbonylation catalyst,...
6265605 Method of preparing amino carboxylic acids  
Novel compounds, N,N'-bis(phosphonomethyl)-N,N'-bis(hydroxycarbonylmethyl)ure a and N,N,N',N'-tetrakis(hydroxycarbonylmethyl)urea, suitable for use in preparing N-acyl aminocarboxylic acids that...
6015924 Process for the preparation of diacids from the washing waters of cyclohexane oxidation products  
The present invention relates to a process for the preparation of diacids or mixtures of diacids from aqueous solutions derived from the washing of cyclohexane oxidation products. More...
5898084 Preparation of N-acylaminocarboxylic acids and N-acylaminosulfonic acids and alkali metal salts thereof  
The process for preparing an N-acylaminocarboxylic or N-acylaminosulfonic acid or an alkali metal salt thereof from an alkali metal aminocarboxylate or aminosulfonate and a carboxylic glyceride...
5808143 Catalyst based on oxides of Fe, Co, Bi and Mo  
Catalysts of the formula I Aa Bb Ox !p Cc Dd Fee Cof Ei Fj Oy !q I,where A is bismuth, tellurium, antimony, tin and/or copper, B is molybdenum and/or tungsten, C is an alkali metal, thallium...
5731467 Process for the manufacture of xylaric acid and uses thereof  
Process for the manufacture of xylaric acid, characterized in that it consists of the oxidative degradation of 5-ketogluconic acid in alkaline medium using oxygen or a gas containing it.The...
5336793 Preparing carboxylic acids or esters by oxidative cleavage of unsaturated fatty acids or esters  
A method of preparing carboxylic acids or esters thereof by the oxidative cleavage of unsaturated fatty acids or esters thereof is carried out in a two-phase aqueous-organic system in which the...
5157152 Process for the oxidation of a tetrahydrophthalic acid  
A process for oxidation of a tetrahydro compound of the formula ##STR1## wherein R and R' independently are H, alkyl, aryl or halo, to a glycol of the formula ##STR2## comprises treating the...
5091568 Oxygen-ruthenium oxide oxidation of 2-hydroxy-3,3-dimethyl-butanoic acid  
In the oxidation of 2-hydroxy-3,3-dimethyl-butanoic acid in solution in the presence of a ruthenium oxide catalyst to produce 2-oxo-3,3-dimethyl-butanoic acid, the improvement wherein oxidation is...
4833272 Process for preparing polycarboxylic acid  
Disclosed is a process for preparing a polycarboxylic acid, the process comprising subjecting a Diels-Alder reaction product of maleic anhydride and a diene and/or the corresponding acid to...
4701550 Process for preparing alkyl esters of methyltartronic acid  
There is described a process for preparing alkyl esters of methyltartronic acid by hydroxylation of methacrylic acid to alpha-methylglyceric acid with H2 O2, in an aqueous medium, in the presence...
4663479 Preparation of aliphatic carboxylic acids and aldehydes by upgrading alpha-hydroxycarboxylic acids  
A process for converting α-hydroxycarboxylic acids to hydroxy free aliphatic carboxylic acids and aldehydes in the presence of a catalyst of the formula: Ma M'b Oxwherein M is at least one of an...
4620034 Process for the preparation of 2-keto-aldonic acids  
Preparation of 2-keto-aldonic acids, e.g., 2-keto-gluconic acid, by oxidizing an aldose, e.g. glucose, or aldonic acid in aqueous solution with molecular oxygen. Use is made of a platinum catalyst...
4614822 Catalytic oxidation of 3,3-dimethyl-2-hydroxybutyric acid to 2-oxo acid and preparation of 4-amino-6-tert.-butyl-3-thio-1,2,4-triazine-5(4-H)-one  
Sodium 3,3-dimethyl-2-hydroxybutyrate and ruthenium dioxide hydrate are added to water, the pH rendered alkaline, and sodium hypochlorite is slowly added to produce sodium...
4233460 Alkoxyalkanoic acid preparation  
An extremely mild, oxidative process for converting alkoxyalkanols to the corresponding acids is disclosed which comprises reacting the alcohol with an alkali metal hydroxide and tert-butyl...
4227021 Production of adipic acid from acidic wash waters  
An improved process for producing adipic acid from the acidic wash waters which arise in the process for oxidizing cyclohexane with air, by treatment with nitric acid at from 10° to 50° C., with...
4142057 Process for preparing diglycolic acids  
1,4-Dioxan-2-ones are prepared by contacting carbon monoxide with formaldehyde, a 1,2-glycol, and a catalytic amount of hydrogen fluoride. The products of this reaction are readily converted into...
3910999 Oxidation of mixtures of organic compounds with hypochlorite ion source materials  
An aqueous mixture of pH from neutral to alkaline and temperature from 70°C. to about 100°C. containing different oxidizable organic species which are most favorably oxidized individually with...
3895040 Method for manufacture of fatty acids and dibasic acids  
An α, ω-glycol, a primary alcohol or an aliphatic compound having one or two secondary alcohol groups is dissolved in a solvent. The resulting solution is heated to 10° - 70°C and brought into...
3860642 METAL-CHELATE CATALYZED OXIDATION OF MONOSACCHARIDES AND DERIVATIVES THEREOF  
A compound selected from the group consisting of monosaccharides containing at least 4 carbon atoms, polyhydric alcohol derivatives of these monosaccharides, and polyhydric acid derivatives of...
3816525 PROCESS FOR OXIDATION OF VICINAL DIOL GROUPS INTO CARBOXYL GROUPS WITH OXYGEN  
3711523 OXIDATION OF VICINAL GLYCOLS IN THE PRESENCE OF ORGANIC PEROXIDES AND COBALTOUS COMPOUNDS  
3678107 PROCESS FOR THE PRODUCTION OF OXALIC ACID  
A process for the production of oxalic acid wherein ethylene glycol and/or glycolic acid are oxidized in the presence of nitric acid with introduction of oxygen. Nitrogen oxides gases generated in...
3658898 PROCESS FOR PRODUCING ADIPIC ACID  
3652611 PRODUCTION OF CARBOXYLIC ACIDS BY OXIDATION OF 1 2-EPOXIDES  
3564051 PRODUCTION OF ADIPIC ACID  
3549696 MANUFACTURE OF OXALIC ACID  
3404179 Process for preparing adipic acids by alkaline fusion of e-hydroxy-caproic acid and its derivatives  
3342838 Process for production of glutamic acid and intermediates  
3256325 Process for the production of alpha-chloroglutaric acid  
3081345 Production of oxalic acid  
3062878 Sugar sequestering agent  
3013070 Process for the production of butane-1, 2, 4-tricarboxylic acid  
2935530 Preparation of cleavage products from ricinoleic stock  
2913490 Thermal degradation of ricinoleates  
2851491 Lead-catalyzed conversion of ricinoleic compounds  
2851493 Nickel-catalyzed sebacic acid production in the presence of barium compounds  
2851492 Lead-catalyzed sebacic acid production in the presence of barium compounds  
2847466 Alkaline oxidation of monoketo monocarboxylic acids  
2847467 Purification of dodecanedioic and undecanediotc acids  
2845439 Preparation of uronic acids and derivatives thereof  
2824131 Production of high molecular weight alcohols from ethylene and oxygen  
2791607 Preparation of dicarboxylic acids  

Matches 1 - 44 out of 44