Patents
Sitemap › C07 - Organic chemistry › C07B - General methods of organic chemistry; Apparatus therefor › C07B 63 - Purification; Separation specially adapted for the purpose of recovering organic compounds; Stabilisation; Use of additives
Patents for C07B 63 - Purification; Separation specially adapted for the purpose of recovering organic compounds; Stabilisation; Use of additives (4,057)
12/1991
12/24/1991US5075009 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
12/20/1991CA2044719A1 Process for the enrichment or separation of organic substance mixtures
12/12/1991WO1991018909A1 Process for removing double metal cyanide complex catalyst residues from catalyst-residue containing polyols
12/11/1991EP0461096A1 Process for the production of N-phenylmaleimide
12/10/1991US5072066 Inhibiting popcorn polymer formation with esters of inorganic acids
12/10/1991US5072065 Inhibiting popcorn polymer formation with alkyl halides
12/10/1991US5072064 Divinyl compound
12/04/1991EP0459710A2 A process for preparing N,N'-bis(tetrabromophthalimide)
11/1991
11/28/1991WO1991018091A1 Stabilization of biological macromolecular substances and other organic compounds
11/26/1991US5068446 Crystallization and heat treatment
11/24/1991WO1991017816A1 Supported chiral liquid membrane for the separation of enantiomers
11/24/1991CA2083388A1 Support chiral liquid membrane for separation of enantiomers
11/21/1991EP0457005A1 Process and device for removal of acids from organic acid containing solvents or solvent mixtures originating from waste air or gas
10/1991
10/22/1991US5059328 Separation agent comprising 1,3-glucan
10/17/1991WO1991015449A1 Removal of nitrogenous components of a hydrocarbon feedstream
10/09/1991EP0450504A1 Preparative chromatographic separation for the production of enantiomerically pure hetrazepines
10/09/1991EP0449865A1 Improved dry neutralization process for liquid organic phases.
10/02/1991EP0449778A2 Process for the preparation of hydroxyphenylepropionates
09/1991
09/17/1991US5049279 Selective extraction of amino acids
09/17/1991CA1289147C Substituted phenols as stabilisers
09/12/1991DE4006923A1 Sepn. material for chromatography - consists of cyclodextrin chemically bonded onto carrier via carbamic acid gps.
09/11/1991EP0445604A2 Separation materials for chromatography
09/11/1991EP0445553A1 Compact crystalline 3-cyano-2-morpholino-5-(pyridyl-4)-pyridine with high bulk density and process for preparation
08/1991
08/28/1991EP0443391A1 Method for obtaining tetrahydrofuran from mixtures containing tetrahydrofuran, 1,4-butanediol, gamma-butyrolactone and succinic acid esters
08/22/1991DE4005295A1 THF recovery from butane-diol butyrolactone and succinate ester mixts. - by heating with layer silicate at 100-250 deg. C, distilling off THF water and sepg. THF from distillate
08/20/1991US5041226 Separating with an agent comprising aliphatic ester of polysaccharide
08/13/1991CA1287639C Process for the lactonization of mevinic acids and analogs thereof
07/1991
07/17/1991CN1053053A Refining method for eliminating electrolyzable inorganic salts impurities in organic compounds
07/16/1991US5032277 Optical resolution with β-1,4-mannan tribenzoate
07/02/1991CA1285554C Method for preparing crystalline cefadroxil monohydrate
06/1991
06/26/1991EP0434342A1 Selective separation of multi-ring aromatic hydrocarbons from distillates by perstraction
06/26/1991EP0434119A2 Process for refining soap-containing crude polyol fatty-acid polyester reaction products
06/26/1991EP0434117A2 Process for refining soapcontaining crude polyol fatty-acid polyester reaction products
06/22/1991CA2032678A1 Process for refining soap-containing crude polyol fatty-acid polyester reaction products
06/22/1991CA2032677A1 Process for refining soap-containing crude polyol fatty-acid polyester reaction products
06/20/1991CA2031163A1 Selective separation of multi-ring aromatic hydrocarbons from distillates by perstraction
06/19/1991EP0433178A1 Method for the separation of isomers of a crown ether, allowing specially the recuperation of pure isomers cis-syn-cis of dicyclohexyl 18-crown 6-DCH18C6
06/16/1991CA2031752A1 Method to separate the isomers of a crown compound and making it possible to recover in particular the pure cis-syn-cis isomer from dicyclohexyl 18 - crown 6 - dch18c6
05/1991
05/21/1991US5017715 Iodotrimethylsilane compositions
05/21/1991US5017290 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
05/15/1991EP0427338A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents
05/14/1991US5015755 9-anthrylalkyl compounds
05/11/1991CA2029567A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents
05/07/1991US5013754 Synthetic pyrethroid
05/07/1991US5013443 Extraction and separation method and apparatus using supercritical fluid
05/02/1991WO1991003442A3 Process for separating mixtures of partially fluorinated or perfluorinated hydrocarbon compounds
04/1991
04/24/1991EP0424066A2 Polyol polyester synthesis
04/18/1991WO1991004980A1 Method for distillative separation of alcohols
04/16/1991US5008015 Solvent extraction
04/10/1991EP0421187A1 Process for separation of alcohols by distillation
04/10/1991CN1050543A Process for removing alcohol by distillation
04/02/1991CA1282548C Salts of 3-hydroxy-4-oxo-3,4-dihydro-1,2,3-benzotriazine and amino compounds
03/1991
03/26/1991US5002669 Separation agent comprising 1,3-glucan
03/26/1991CA1281995C Process for the recovery of hydrogen/heavy hydrocarbons from hydrogen-lean feed gases
03/21/1991WO1991003442A2 Process for separating mixtures of partially fluorinated or perfluorinated hydrocarbon compounds
03/19/1991CA1281844C Stabilized vinyl halide resin and compositions and articles made therefrom
03/13/1991EP0416752A2 Polyurethane membranes and their use for the separation of aromatics from non-aromatics
03/07/1991DE4027143A1 Stabilising blood substitute emulsions contg. per:fluoro-hydrocarbon
03/06/1991EP0415567A2 Composition and method for stabilising organic compounds
03/05/1991US4997651 Pharmaceutical formulations
02/1991
02/13/1991EP0412300A2 Process for the preparation of extracts having high content in anthocyanosides
02/13/1991CN1049156A Indenoindole compounds i
02/12/1991CA1280116C Amino-acids separation process
02/06/1991EP0411750A2 Organic stabilizers for isothiazolones
02/06/1991EP0411016A1 Process for inhibiting the polymerization of acid monomers.
01/1991
01/09/1991EP0406424A1 Process for recovering crystals from slurry
01/01/1991US4981595 Process for the purification of spergualin-related compounds
12/1990
12/27/1990EP0404536A1 Indenoindole compounds I
12/23/1990WO1990015800A1 Indenoindole compounds
12/23/1990CA2062830A1 Indenoindole compounds
12/18/1990US4978430 Evaporation, separation of water vapor with polyimide membrane selective permeation
12/06/1990CA2018086A1 Organic stabilizers
11/1990
11/28/1990CN1010583B Process for extracting paraffins from their mixtures with paraffinsulphonic acids
11/22/1990EP0398623A1 Iodotrimethylsilane compositions
11/21/1990CN1010477B Process for extracting paraffins from mixture of alkane and alkanesutphonic acid
11/20/1990CA1276641C Substituted p-hydroxyphenyl compounds
11/06/1990US4968787 Method for treating glycoside
10/1990
10/31/1990EP0395104A1 Fluidized bed product discharge process
10/30/1990US4966694 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
10/28/1990CA2015628A1 Fluidized bed product discharge process
10/17/1990CN1010008B Process for extraction of paraffin from mixtures thereof with alkane-sulphonic acids
10/16/1990US4963584 Pyrethroidal composition comprising more than one active ingredients
10/16/1990US4963254 Packing material for chromatographic use
10/09/1990US4962271 Permselective membranes
10/09/1990US4961855 Dehydration of organic oxygenates
10/09/1990CA1275108A1 Insecticidal composition comprising more than one active ingredients
10/02/1990CA1274854A1 Process for the extraction of paraffins from mixtures thereof with alkane-sulphonic acids
09/1990
09/11/1990US4956520 P-xylene separation and purification, crystallization, cooling, washing then melting
09/11/1990US4956052 Extraction water and organic compound mixture
09/05/1990EP0385119A2 Mixture components separation and recovery process through evaporation
08/1990
08/28/1990CA1273357A1 Substituted aminoxyethyl phosphonates
08/22/1990EP0383569A2 Storage of materials
08/08/1990CN1009082B Primycin components and process for the separation of the antibiotic complex
08/08/1990CN1009072B Process for the destruction of by-product tetranitromethane
08/01/1990EP0379963A1 Extraction and seperation method and apparatus using supercritical fluid
08/01/1990EP0179863B1 Liquid co2 /cosolvent extraction
07/1990
07/31/1990CA1272209A1 Dehalogenation process
07/24/1990US4943354 Phase separation within the distillation column
07/12/1990WO1990007484A1 Improved dry neutralization process for liquid organic phases
07/11/1990CN1043627A Components of primycin and process for separating antibiotic composition
1 ... 28 29 30 31 32 33 34 35 36 37 38 39 40 41