Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 303 - Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
Patents for C07C 303 - Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides (11,473)
10/1991
10/09/1991EP0450201A1 Process for preparing a sulphonated dispersant from petroleum asphalt fractions
10/09/1991CN1055179A 8-sulfamy lmethylene-2-amino tetralins
10/08/1991US5055610 Process for the separation of sulphuric acid from aqueous mixtures thereof with paraffin-sulphonic acids
10/01/1991WO1991015472A1 Alcohol-ester separation by recrystallization
10/01/1991WO1991015471A1 Protected hydroxy method for alcohol-ester separation
10/01/1991WO1991015470A1 Alcohol-ester separation by reaction with acetate
10/01/1991US5053530 Preparation of isethionic acid with organic acid
10/01/1991CA2058306A1 Alcohol-ester separation by recrystallization
10/01/1991CA1289945C Intermediates
09/1991
09/26/1991DE4009096A1 Binary surfactant mixt. contg. internal sulpho-fatty acid ester - and di-salt of internal sulpho-fatty acid, from higher unsatd. fatty acids
09/25/1991EP0447778A2 Vinyl polyether alcohols
09/25/1991EP0447727A1 Novel 8-sulfamylmethylene-2-amino tetralins
09/22/1991CA2038748A1 8-sulfamylmethylene-2-amino tetralins
09/19/1991WO1991013864A1 Method for preparing naphthalene sulphonic acids
09/19/1991WO1991013863A1 Method for preparing 3-nitrobenzene sulphonic acid chloride
09/18/1991EP0446971A1 Process for the preparation of substituted sulphonic acids and/or sulphonates
09/18/1991EP0446675A1 Process for the preparation of sodium 3-diethylaminobenzene-sulfonate
09/18/1991EP0446649A1 Process for the preparation of sodium 3-diethylaminobenzene-sulfonate
09/18/1991EP0446301A1 Preparation of biaryl compounds.
09/17/1991CA1289149C PROCESS FOR SOLID ALKALI METAL SALTS OF .alpha. SULFOFATTY ACID ALKYL ESTERS
09/12/1991DE4007603A1 Verfahren zur herstellung von naphthalinsulfonsaeuren Process for the preparation of naphthalenesulfonic acids
09/11/1991EP0445844A2 Distillate fuel
09/11/1991EP0445843A2 Process for the preparation of cyclopropanecarboxylic acid derivatives substituted at position 3 by a saturated halogenated chain
09/11/1991EP0445196A1 Concentrated, free-flowing anionic surface-active agents and process for the production thereof
09/10/1991US5047580 Process for the separation of sulfuric acid from aqueous mixtures of paraffin-sulfonic acids
09/10/1991US5047570 Preparation of 2-cyano-3-aminoacrylonitrile derivatives
09/05/1991WO1991013057A1 Co-sulfation of ethoxylated alcohols and unsaturated fatty alcohols
09/05/1991WO1991009010A3 Fluorocarbon compounds and processes for preparation thereof
09/05/1991DE4006666A1 Verfahren zur herstellung von 3-nitrobenzolsulfonsaeurechlorid Process for the preparation of 3-nitrobenzenesulfonyl chloride
09/03/1991US5045537 Hydrophilic renin inhibitors, their preparation and use
08/1991
08/27/1991US5043347 Indanes and analgesic compositions and methods thereof
08/27/1991CA1288107C Leukotriene antagonists
08/22/1991DE4004883A1 New vinyl-polyether alcohol derivs. - useful as surfactants and intermediates for polyether sulphonate(s), prepd. by reacting polyether alcohol with vinyl oxirane
08/21/1991EP0442754A2 Reagents and methods for stereospecific fluoromethylation
08/20/1991US5041681 Chemical process
08/20/1991US5041632 Process for the preparation of 4,4'-dinitrostilbene-2,2-disulfonic acid
08/20/1991US5041631 Process for the preparation of 2-alkylamino-4-aminobenzenesulfonic acids
08/20/1991US5041603 N-phenylsulfonyl-N'-pyrimidinyl-ureas and N-phenyl-sulfonyl-N'-triazinyl ureas
08/20/1991CA1287840C Process for preparing alkyl-sulphonyl chlorides and arylalkyl-sulphonylchlorides
08/20/1991CA1287839C PROCESS FOR THE PRODUCTION OF MOBILE PASTES OF WASHING-ACTIVE .alpha.-SULFOFATTY ACID ESTER SALTS OF HIGH SOLIDS CONTENT
08/17/1991CA2036070A1 Vinyl polyether alcohols
08/14/1991EP0441445A2 Preparation of amides
08/14/1991EP0440730A1 Process for manufacturing highly sulphated fatty acids and fatty acid derivatives
08/14/1991CN1053785A Preparation of amides
08/13/1991US5039710 Viricides, antitumor agents
08/07/1991EP0439687A1 Process for the preparation of alkane- and arenesulfonamides
08/06/1991US5037992 Catalytic sulfation at hydroxyl group withether sulfate; surfactants
08/06/1991CA2034972A1 Preparation of amides
07/1991
07/31/1991CN1053443A Process for preparing sulphonated dispersant from petroleum asphalt fractions
07/31/1991CN1053425A Process for purifying paraffin sulphonic acids
07/24/1991CN1053235A Process for prepn. of beta-substituted sulphonic acids and/or sulphonates
07/23/1991US5034417 New alkanesulfonanilide derivatives, processes for preparation thereof and pharmaceutical composition comprising the same
07/17/1991CN1013198B Anti-tumour sulfonylurea deriv. preparing process
07/13/1991CA2033956A1 Process for the preparation of beta-substituted sulphonic acids and/or sulphonates
07/09/1991US5030752 Chemical intermediates
07/02/1991US5028736 Adsorption On A Basic Ion Exchanger
07/02/1991US5028728 Process for the preparation of reaction products of 2,2-bis-(4-hydroxphenyl)-hexafluoropropane and new derivatives of this type
06/1991
06/26/1991EP0433816A1 Process and device for the preparation of a solution of a non-ferrous metal sulphonate
06/26/1991CN1052476A Process for hydrolyzing alpha-naphthalenesulfonic acid in naphthalenesulfonating mixture
06/25/1991US5026710 Fungicides
06/25/1991CA1285290C Methods for preparing group ii metal overbased sulfurized alkylphenols
06/25/1991CA1285286C Preparation of acyloxybenzenesulfonic acids and their alkali metal and alkaline earth metal salts
06/25/1991CA1285285C Process for the preparation of an azidosulphonylbenzoic acid
06/22/1991CA2032838A1 Process for preparing a sulphonated dispersant from petroleum asphalt fractions
06/20/1991DE3941365A1 Verfahren zur herstellung von salzen sulfierter fettsaeureglycerinester Process for the preparation of salts of sulfonated fettsaeureglycerinester
06/20/1991DE3941061A1 Anionic surfactant - obtd. by sulphating opt. poly:alkoxylated fatty acid sorbitan ester] used in prepn. of surfactant
06/19/1991WO1991009011A1 Process for sulfating unsaturated alcohols
06/19/1991EP0408759A4 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups
06/18/1991US5025104 2,4-pentanedione-1-sulfonic acid and method for preparing the same
06/16/1991WO1991009009A1 Process for making salts of sulphonated fatty acid glycerine esters
06/16/1991CA2071957A1 Process for making salts of sulphonated fatty acid glycerine esters
06/12/1991WO1991009010A2 Fluorocarbon compounds and processes for preparation thereof
06/12/1991EP0431653A2 Liquid surface active compositions
06/12/1991EP0431521A1 Aminobutanol derivative and process for the preparation of 3-pyrrolidinol from the same
06/12/1991CN1052057A Process for extracting apolar substance from liquid phase by means of supercritic gas in extractor equipped with perforated trays
06/12/1991CA2071199A1 Fluorocarbon compounds and processes for preparation thereof
06/11/1991US5023361 Reacting sulphonic acid or sulfate with decarboxylate ester
06/05/1991EP0430352A2 Process for purifying paraffin sulphonic acids
06/05/1991EP0430096A2 Process for the production of 3,4-epoxybutyrate and intermediate therefor
06/05/1991EP0430001A1 Process for preparing benzaldehydes
06/04/1991US5021414 Phenol derivatives
06/02/1991CA2031248A1 Process for purifying paraffin sulphonic acids
05/1991
05/30/1991WO1991007383A1 Process for the hydrolysis of alpha-naphthalene sulphonic acid in a naphthalene-sulphonating mixture
05/29/1991CN1051711A Process for preparation of large grain ammonium sulfate
05/17/1991CA2028717A1 Process for the preparation of alkane- and arenesulfonamides
05/16/1991WO1991006531A1 Process for producing anionic tensides with a sulphate structure
05/16/1991DE3937748A1 Verfahren zur hydrolyse von (alpha)-naphtalinsulfonsaeure in einem nahptalin-sulfoniergemisch Process for the hydrolysis of (alpha) -naphtalinsulfonsaeure in a nahptalin-sulfoniergemisch
05/15/1991EP0427071A1 Process for the preparation of 2-aminobenzene-1,4-disulfonic acids
05/08/1991EP0425946A2 Iso- and heterocyclic phenylsulphonamides
05/08/1991DE3936783A1 Verfahren zur herstellung anionischer tenside mit sulfatstruktur Process for the preparation of anionic surfactants with sulfate structure
05/08/1991CN1012576B Process for preparing carboxanilides compounds
05/08/1991CN1012575B Preparation of alkanoyl anilides
05/07/1991CA1283926C Process for making 1,3-dioxane derivatives
05/07/1991CA1283918C Carboxanilides
05/07/1991CA1283917C Amino acid derivatives having anti-tumor activity and compositions containing them
05/03/1991CA2029057A1 Antithrombotic iso- and heterocyclic phenylsulphonamides
05/02/1991WO1991005765A1 Process for preparing sulfonamide derivative of norbornane
05/02/1991EP0424762A1 Process for the sulfoxidation of n-paraffins
05/02/1991EP0424616A2 Production of alkanesulfonic acids by oxidation of alkanethiols and dialkyl disulfides
05/02/1991DE3936001A1 Verfahren zur sulfierung ungesaettigter fettsaeureglycerinester Process for the sulfonation of unsaturated fettsaeureglycerinester
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