| Patents for C07C 63 - Compounds having carboxyl groups bound to carbon atoms of six-membered aromatic rings (6,553) |
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| 03/03/1992 | US5093529 Process for the preparation of fluorinated benzoic acids |
| 03/03/1992 | US5093516 Aromatic compounds, a process for their preparation and their use in human and veterinary medicine and for cosmetic compositions |
| 03/03/1992 | US5093515 Intermediate for quinolone carboxylic acid bactericide |
| 03/03/1992 | US5093001 Suction filtration with pressurization; blockage prevention efficiency, durability |
| 03/03/1992 | CA1296742C Process for the production of high purity terephthalic acids |
| 02/25/1992 | CA1296352C Aromatic dicyclic coumpounds, process for preparing such and use thereof in cosmetics |
| 02/12/1992 | CN1058583A Process for producing purified terephthalic acid |
| 02/11/1992 | US5087764 Deprotonation of a 1-substituted-2,3-difluorobenzene using an organometallic compound and reacting the reaction product with an electrophile |
| 02/11/1992 | US5087743 Treatment of skin disorders |
| 02/11/1992 | US5087742 Process for preparing aromatic polycarboxylic acids |
| 02/11/1992 | US5087741 Continuous production of aromatic carboxylic acids |
| 02/11/1992 | US5087724 Substituted benzenes useful as intermediates |
| 02/05/1992 | EP0469327A2 Process for producing purified terephtalic acid |
| 02/04/1992 | US5086188 Preparation of 3,5-dichlorophthalic acid and 3,5-dichlorophthalic anhydride |
| 02/04/1992 | US5086184 N-heterocyclic benzamides |
| 01/28/1992 | CA1294951C Process for the production of regenerated humic acids from coal |
| 01/21/1992 | US5083235 Dielectrics |
| 01/15/1992 | EP0370054B1 Catalyst composition and method for selective dehydrogenation |
| 01/14/1992 | US5081291 Process for manufacture of 3,3',4,4'-biphenyltetracarboxylic acid |
| 01/14/1992 | US5081281 Process for the preparation of 3,3',4,4'-biphenyltetracarboxylic acid and its derivatives |
| 01/14/1992 | US5081252 Process for the preparation of aromatic carboxylic acids |
| 01/08/1992 | EP0464471A2 Partially fluorinated dicarboxylic acid and its acid chloride, process for preparing it and use thereof |
| 01/08/1992 | EP0464046A1 Process for manufacturing a dmt intermediate product of given purity and subsequent processing thereof to obtain ultrapure dmt and/or medium- or high-purity terephthalic acid. |
| 01/02/1992 | EP0463988A2 Process for concentrating or separating mixtures of organic compounds |
| 01/02/1992 | EP0463556A2 Partially fluorinated tetracarboxylic acid and its dianhydride, process for preparing it and its use |
| 12/20/1991 | CA2044719A1 Process for the enrichment or separation of organic substance mixtures |
| 12/18/1991 | CN1015104B Deprotection of allylic esters and ethers |
| 12/17/1991 | US5073566 Angiotensin ii antagonist 1,3-imidazoles and use thereas |
| 12/17/1991 | CA1293262C2 Process for tetrafluorobenzoic acid |
| 12/10/1991 | US5072038 Chemical intermediates for bactericides |
| 12/10/1991 | US5072003 Acid anhydrides and dianhydrides of disubstituted maleic anhydrides |
| 12/10/1991 | CA1292996C Process for the preparation of 4-(2'-chloroethyl)- benzoic acid |
| 12/03/1991 | US5070103 Naphthalene derivatives and composition and methods of use, and aldehyde intermediates |
| 11/26/1991 | US5068449 Chemical intermediates for drugs, agricultural products, bactericides, such as fluorinated pyridone carboxylic acids |
| 11/26/1991 | US5068411 Trifluorobenzene compounds and process for producing the same |
| 11/26/1991 | US5068410 Process for producing highly pure 2,6-naphthalene dicarboxylic acid |
| 11/26/1991 | US5068409 Salt formation of 4-halophthalic acid, adjusting the pH to 2 or 3 recovering the precipitate |
| 11/26/1991 | US5068407 Oxidation of tertiary-alkyl substituted aromatics |
| 11/26/1991 | US5068300 Dicarboxylic acid or dicarboxylic halide compounds as intermediates for polyesters, polyamides and polyurethanes and copolymers with polycarbonates, polyethers and polyphenylene sulfide |
| 11/26/1991 | US5068248 Analgesics, antipyretics and antiinflammatory agents |
| 11/21/1991 | EP0457606A1 Process for producing highly pure isophthalic acid |
| 11/14/1991 | WO1991017208A1 Use of metal soaps of polycarboxylic acids or polycarboxylic acid partial esters as processing aids for polyesters |
| 11/12/1991 | US5064958 1,3-genzoxazine, 2,4-dione derivatives |
| 11/06/1991 | CN1055917A Method for purification of benzoic acid |
| 10/23/1991 | EP0453022A2 Method for the purification of benzoic acid |
| 10/17/1991 | WO1991016308A1 Preparation of 3,4,6-trifluorophthalic acid |
| 10/17/1991 | CA2079464A1 Preparation of 3,4,6-trifluorophthalic acid |
| 10/16/1991 | EP0451714A1 Process for the acylation of alkyl aromatics |
| 10/13/1991 | CA2040081A1 Acylation of alkyl aromatic hydrocarbons |
| 10/09/1991 | CN1014204B Multistage counter-current washing disposition and their treatment method |
| 10/08/1991 | CA1290338C Quinolonecarboxylic acid derivatives |
| 10/02/1991 | EP0449099A2 Retinoide derivatives, their preparation and their use for medicaments |
| 10/02/1991 | CN1014145B Purification of terephthalic acid |
| 10/01/1991 | US5053547 Benzonorbornene derivatives, processes for their preparation and medicinal and cosmetic compositions containing them |
| 09/24/1991 | CA1289573C Synthesis of high purity 5-chloroisophthaloyl chloride |
| 09/17/1991 | CA1289150C Process for the production of aromatic carboxylic acids |
| 09/11/1991 | EP0446062A1 C-Linked pyrazole derivatives |
| 09/11/1991 | CN1054417A Process for preparing basic calcium aluminium hydroxide dicarboxylates, and their use |
| 09/10/1991 | US5047560 Process for producing highly pure 3,3',4,4'-biphenyltetracarboxylic acid or dianhydride thereof |
| 09/10/1991 | US5047228 Nonionic 5-C-substituted 2,4,6-triiodoisophthalic acid derivatives |
| 09/10/1991 | CA2037872A1 C-linked pyrazole derivatives |
| 09/03/1991 | US5045122 Alcohol or glycol, aprotic solvent, alkoxide or hydroxide |
| 09/03/1991 | CA1288440C Halogenobenzoic acid derivatives and their preparation |
| 09/01/1991 | CA2011269A1 Purification of crude isophthalic acid |
| 08/28/1991 | EP0443856A1 Preparation of isopropylidene bis(phthalic acid) and isopropylidene bis (phthalic anhydride) |
| 08/28/1991 | CN1054068A Process for lithiation of 1,3-bis (trifluoromethyl) benzene |
| 08/28/1991 | CN1054062A Synthetic technology for p- phthalyl chloride |
| 08/21/1991 | EP0442340A2 Process for the preparation of an organolithium compound starting from 1,3-bis(trifluoromethyl)-benzene |
| 08/21/1991 | EP0252964B1 Catalytic method for producing fluoroaromatic compounds using substituted pyridinium salts |
| 08/21/1991 | CN1013582B Process for producing polyrosin using hydrogen chloride-zine chloride |
| 08/20/1991 | US5041639 Polysubstituted derivatives of naphtalene, their process of preparation and their application in the cosmetic and pharmaceutical fields |
| 08/20/1991 | US5041638 Alkenoic acid derivatives |
| 08/14/1991 | EP0441347A1 Method of producing naphthalene dicarboxylic acid |
| 08/14/1991 | DE4002988A1 Basic calcium aluminium hydroxide di:carboxylate(s) - useful as heat stabilisers for halogen-contg. thermoplastics, esp. PVC |
| 08/13/1991 | US5039807 Phenyl pyrid(-one or-thione) compounds which are intermediates |
| 08/07/1991 | EP0440593A2 Oxidation of tertiary-alkyl substituted aromatics and catalysts therefor |
| 08/07/1991 | EP0439616A1 Method of producing 3,4,3',4'-substituted biphenyl compounds |
| 08/06/1991 | US5037919 Reactive compounds containing perfluorovinyl groups |
| 08/06/1991 | US5037512 Removing by-products of catalytic oxidation of toluene; chlorination of benzyl-benzoate to produce benzonitrile-free benzoyl chloride |
| 08/02/1991 | WO1991011421A1 Basic calcium aluminium hydroxide dicarboxylates, process for producing them and their use |
| 08/02/1991 | CA2074821A1 Basic calcium aluminum hydroxide dicarboxylates, a process for their production and their use |
| 07/31/1991 | EP0438869A1 Improvements in and relating to angiotensin II antagonists |
| 07/31/1991 | EP0438715A2 1,1-Bicyclo-substituted fluorinated cyclopentanes and method for their production |
| 07/31/1991 | CN1013370B Process for preparing 2,4,5-trihalogeno-and 2,3,4,5-tertrahalogeno-benzene derviatives |
| 07/10/1991 | EP0436379A2 A process for preparation of an aromatic carboxylic acid |
| 07/09/1991 | WO1991010684A1 Oxidized variants of gm-csf |
| 07/09/1991 | CA2072587A1 Oxidized variants of gm-csf |
| 07/02/1991 | US5028738 Alkylation of pyruvic acid derivatives |
| 06/26/1991 | CN1012954B Process for separating residue from industrial p-phthalic acid |
| 06/25/1991 | US5026943 Catalytic conversion over catalyst comprising synthetic crystal MCM-35 |
| 06/25/1991 | US5026892 Arylcyclobutylamidoalkyl-terminated polysiloxanes; shelf-life; oxidation resistance; coatings, films, molding materials, composites and adhesives |
| 06/25/1991 | US5026888 Ruthenium terephthalate |
| 06/19/1991 | EP0432910A2 Process for producing highly pure 2, 6 naphthalene dicarboxylic acid |
| 06/15/1991 | WO1991009004A1 Ester hydrolysis and depolymerization of polyester and polycarbonate polymers |
| 06/15/1991 | CA2069500A1 Ester hydrolysis and depolymerization of polyester and polycarbonate polymers |
| 06/12/1991 | EP0431294A2 Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,4,6-trifluorophthalic anhydride |
| 06/11/1991 | US5023363 Antiinflammatory agent, antiallergens, skin disorders, vision defects |
| 06/05/1991 | EP0430434A2 Process for the preparation of fluoroaromatic and fluoroheteroaromatic compounds |
| 06/05/1991 | EP0429848A2 Preparation of 3,4-difluorobenzoic acid by the decarboxylation of 4,5-difluorophthalic anhydride or 4,5-difluorophthalic acid |
| 06/04/1991 | US5021605 Trifluorobenzene compounds |