| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 03/17/1981 | US4256916 Fixed bed platinum catalyst |
| 03/17/1981 | US4256915 Vapor phase oxidation of unsaturated aldehyde using catalyst of molybdenum, vanadium, rhenium and magnesium, copper and/or cadmium oxides |
| 03/17/1981 | US4256914 Catalytic oxidation of methacrolein |
| 03/17/1981 | US4256913 Preparation of carboxylic acids using a BF3 catalyst complex |
| 03/17/1981 | US4256783 Fixed bed shell, tubular heat exchanger, restricting formation of hot spots |
| 03/17/1981 | US4256656 Mesomorphous 4-alkoxytetrafluorobenzoic acid esters |
| 03/17/1981 | US4256650 Oxidation of propylene and acetaldehyde using boride of tantalum, molybdenum or nitrogen as catalyst |
| 03/17/1981 | CA1097606A1 Thallium (iii) reagents supported on montmorillonite clay minerals and oxythallation processes for utilizing same |
| 03/11/1981 | EP0024971A1 Nickel carboxylates, their preparation, their use in a catalytic composition, the use of this composition in the oligomerisation of monoolefines |
| 03/11/1981 | EP0024954A1 Catalyst for production of unsaturated carboxylic acid, preparation thereof and production of unsaturated carboxylic acid |
| 03/11/1981 | EP0024516A1 4-Fluoro-3-bromobenzoyl fluoride, process for its preparation and for the preparation of 4-fluoro-3-bromobenzoic acid therefrom |
| 03/11/1981 | EP0024492A1 Process for the preparation of aromatic dicarboxylic acid dichlorides and their use in the preparation of polycondensates |
| 03/10/1981 | US4255591 Carbonylation process |
| 03/10/1981 | US4255590 Comminution, heating, contact with calcium oxide; noncatalytic oxidation; bromine-free gaseous discharge |
| 03/10/1981 | US4255351 Sulfonic acid esters of 2,2,2-trichloroethylhydroxycyclobutanones |
| 03/10/1981 | US4255340 Method for preparing an alkenyl-substituted dicarboxylic acid anhydride |
| 03/10/1981 | CA1097371A1 Cobalt-catalysed oxidation of hydrocarbons |
| 03/10/1981 | CA1097077A1 Production of purified synthesis gas and carbon monoxide |
| 03/05/1981 | WO1981000562A1 Mixed salt of valproic acid |
| 03/04/1981 | EP0024286A1 Process for the preparation of aromatic dicarboxylic acid dichlorides and their use in the preparation of polycondensates |
| 03/03/1981 | US4254283 Fractional crystallization; nitric acid oxidation of cyclohexanone, cyclohexanol |
| 03/03/1981 | US4254282 Process for preparing cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acid |
| 03/03/1981 | US4254274 Cycloalkylidenemethylphenylacetic acid derivatives and process for the preparation thereof |
| 03/03/1981 | US4254262 Process for producing phenoxycarboxylic acid derivative |
| 03/03/1981 | US4254053 Process for manufacturing D camphorate of L carnitinamide and D camphorate of D carnitinamide |
| 03/03/1981 | US4253988 Wetting the precursor prior to calcining thereby reducing attrition of the oxidation catalyst agglomerants |
| 03/03/1981 | US4253948 At lower temperatures |
| 03/03/1981 | CA1096891A1 Low temperature oxydehydrogenation of ethane to ethylene |
| 03/03/1981 | CA1096881A1 Preparation of aliphatic and heterocyclic alpha-keto carboxylic acids |
| 03/03/1981 | CA1096874A1 Manufacture of gamma-butyrolactones from 1,3-glycols and esters, halides and metadioxanes thereof |
| 03/03/1981 | CA1096692A1 Process for preserving process cheese |
| 02/25/1981 | EP0024181A1 Process for the isolation of a solid salt of p-hydroxymandelic acid; some salts of p-hydroxymandelic acid |
| 02/24/1981 | US4252983 Copper and cobalt acylates |
| 02/24/1981 | US4252820 Arthropodicidal 2,2-dimethyl-3-(2-perfluoroalkyl-2-perhaloalkyl-vinyl)-cyclopropanecarboxylic acid esters |
| 02/24/1981 | US4252812 2-Substituted-trans-5-aryl-2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b]indoles |
| 02/24/1981 | US4252772 Heat-pipe exchanger system using air and waste gases for cyclically alternating condensation to solids and melting |
| 02/24/1981 | US4252748 Recovery of acetone produced by carbonylation |
| 02/24/1981 | US4252741 Carbonylation with Group VIII noble metal catalysts |
| 02/24/1981 | US4252683 Oxides of molybdenum, copper, phosphorus, antimony, calcium, and rhenium |
| 02/24/1981 | US4252682 Catalyst for producing methacrylic acid |
| 02/24/1981 | US4252681 Catalyst for producing methacrylic acid |
| 02/24/1981 | US4252659 Process for the production of overbased manganese salts of organic acids |
| 02/24/1981 | US4252545 Process for the fractional desublimation of pyromellitic acid dianhydride |
| 02/24/1981 | CA1096391A1 Reactivation of maleic anhydride producing phosphorus- vanadium-oxygen complex oxidation catalysts by treatment with halide containing materials |
| 02/19/1981 | WO1981000404A1 Process for the isolation of a solid salt of p-hydroxy-mandelic acid;some salts of p-hydroxymandelic acid |
| 02/17/1981 | US4251671 Extraction of citric acid |
| 02/17/1981 | US4251543 2-(p-Prenylphenyl)propionic acid |
| 02/17/1981 | US4251458 Process for preparing carboxylic acid anhydrides |
| 02/17/1981 | US4251457 Process for purification of the off-gases resulting from the production of benzoyl chloride from phosgene |
| 02/17/1981 | US4251451 Diluting reaction mixture to prevent foaming and solidification during hydrogen evolution |
| 02/17/1981 | US4251448 Odorants |
| 02/17/1981 | US4251447 Ozonolysis of enol-lactone dimer of ketene |
| 02/17/1981 | US4251393 Attrition resistant catalysts |
| 02/17/1981 | US4251390 Partial oxidation catalyst |
| 02/17/1981 | CA1095917A1 Method for making organic polycarboxylic acids |
| 02/11/1981 | EP0023849A2 Substituted pentenoic acid, preparation thereof, its application in the preparation of substituted cyclopropane derivatives |
| 02/11/1981 | EP0023774A1 Process for isolating methacrylic acid by extraction |
| 02/11/1981 | EP0023647A1 Process for the preparation of halogenated benzoyl fluorides |
| 02/11/1981 | EP0023612A1 Macrocyclic diesters, process for their preparation and their use as odorous compositions |
| 02/11/1981 | EP0023584A1 Process for the preparation of trifluoromethyl naphthalenes |
| 02/10/1981 | US4250346 Low temperature oxydehydrogenation of ethane to ethylene |
| 02/10/1981 | US4250339 Process for producing methacrolein |
| 02/10/1981 | US4250331 Reacting carbon dioxide under heat and pressure; extraction; depressurizing |
| 02/10/1981 | US4250330 Oxidation of p-xylene; azeotropic distillation of mother liquor using isobutyl acetate; condensing; stripping aqueous phase |
| 02/10/1981 | US4250182 Pharmaceutical composition containing acridone compounds and method of using same |
| 02/10/1981 | US4250120 5-isopropyl-8-methyl-bicyclo(5.3.0)deca-2,8-diene-2-carboxaldehyde, induces sporulation |
| 02/10/1981 | US4250054 Catalysts for producing unsaturated aliphatic acids |
| 02/10/1981 | CA1095529A1 Manufacture of pent-3-enoic acid and its alkyl esters |
| 02/10/1981 | CA1095514A1 3,5-BISOXYGENATED 2-(.omega.-HALO-3-OXYGENATED-1- ALKENYL)CYCLOPENTANE-1-HEPTANOIC ACIDS AND DERIVATIVES THEREOF |
| 02/10/1981 | CA1095491A1 Catalyst for the oxidation of acrolein and methacrolein to acrylic acid and methacrylic acid respectively |
| 02/05/1981 | WO1981000254A1 Process for the preparation of racemic hydroxyarylglycolic acids and new products resulting therefrom |
| 02/04/1981 | EP0023459A1 Process for the preparation of racemic hydroxyarylglycolic acids |
| 02/03/1981 | US4249027 Condensation of an alkynoic ester and 3-oxoglutaric acid diester |
| 02/03/1981 | US4249022 Process for the manufacture of 1,4-disubstituted bicyclic or tricyclic compounds and new 1,4-disubstituted bicyclic compounds |
| 02/03/1981 | US4249020 Reacting in presence of calcined niobium-vanadium-molybdenum catalyst |
| 02/03/1981 | US4249018 Synthesis of citric acid or citrates |
| 02/03/1981 | US4249015 Oxidation of trihaloalcohols |
| 02/03/1981 | US4248803 For oxidation to the corresponding aldehydes |
| 02/03/1981 | CA1095078A1 Production of acetic anhydride and acetic acid from acetaldehyde |
| 02/03/1981 | CA1095076A1 Process for the catalytic gas phase oxidation of toluene with a gas containing molecular oxygen |
| 02/03/1981 | CA1095042A1 Heterocyclic phenyl ethers and herbicides containing same |
| 01/28/1981 | EP0022972A1 Menthyl esters, process for their preparation and their use in enantiomer separation of chiral carboxylic acids |
| 01/28/1981 | EP0022971A1 Process for the preparation of 3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid derivatives |
| 01/27/1981 | US4247716 Water-containing or aqueous solvent for the oxidation of hydroxyacetone using a group viii metal or rhenium catalyst |
| 01/27/1981 | US4247419 Single phase vanadium(IV)bis(metaphosphate) oxidation catalyst with improved intrinsic surface area |
| 01/27/1981 | CA1094574A1 Production of cleaned and purified synthesis gas and carbon monoxide |
| 01/21/1981 | EP0022533A1 Process for the preparation of polyvalent phenols |
| 01/21/1981 | EP0022529A1 Process for the resolution of d,l 2-(6-methoxy-2-naphthyl)propionic acid; a mixture of the salts of these d and l acids; a pharmaceutical composition containing a salt of the d acid; a salt of the d acid |
| 01/21/1981 | EP0022484A1 Process for the preparation of aromatic dicarboxylic acid dichlorides and their use in the preparation of polycondensates |
| 01/20/1981 | US4246430 Method for producing crystals of sorbic acid |
| 01/20/1981 | US4246428 Method for separation of diastereoisomeric 3-(3,4-dibenzyloxyphenyl)serine |
| 01/20/1981 | US4246427 Catalytic oxidation of methacrolein in vapor phase |
| 01/20/1981 | US4246195 Purification of carbonylation products |
| 01/20/1981 | US4246193 Process for the resolution of d,1 2-(6-methoxy-2-naphthyl)propionic acid |
| 01/20/1981 | US4246186 Process for producing acetic acid, ethanol, and acetaldehyde from synthesis gas |
| 01/20/1981 | US4246185 Catalyst metal separation from saturated aliphatic monocarboxylic acids |
| 01/20/1981 | US4246183 Process for preparing unsaturated aliphatic esters from aliphatic dienes |
| 01/20/1981 | US4246182 Using hydrogenolysic catalysts consisting of platinum or palladium and acidic promoters |
| 01/20/1981 | US4246164 Process for the resolution of (+)- and (-)-6-methoxy-α-methyl-2-naphthaleneacetic acid |
| 01/20/1981 | US4246074 Process for the separation of a mixture of chloroacetyl chloride and dichloroacetyl chloride |