Patents
Patents for C07C 37 - Preparation of compounds having hydroxy or o-metal groups bound to a carbon atom of a six-membered aromatic ring (10,407)
03/1997
03/05/1997CN1034168C Method for preparation of bisphenols by phenol and aldehyde or ketone catalyst condensation
03/04/1997US5608120 Process for the preparation of (arylethyl)-hydroquinones and diesters thereof
03/04/1997US5607890 Supported Lewis acid catalysts derived from superacids useful for hydrocarbon conversion reactions
02/1997
02/26/1997EP0759449A2 Process for the preparation of methyl-substituted polyalkylidene polyphenols
02/26/1997CN1143539A Micro-porous resin encased nm-particle catalyst for synthesizing benzenediol by hydroxylation of phenol with hydrogen peroxide
02/19/1997EP0758638A1 Cristallisation forms of an adduct of bisphenol-A with bisphenol-TMC
02/19/1997EP0758637A1 Process for the purification of bisphenol-A
02/19/1997EP0758636A1 Process for the treatment of waste water from a bisphenol-A preparation process
02/12/1997CN1142485A Circulation use of production of phenol from sebacic acid
02/12/1997CN1142481A Extraction of theapolyphenols
02/11/1997US5602196 Bisphenol ester derivatives
02/05/1997CN1142201A Supported lewis acid catalysts for hydrocarbon covnersion reactions
01/1997
01/29/1997EP0755371A1 Method for production of phenol and its derivatives
01/29/1997EP0755301A1 Catalysts for production of phenol and its derivatives
01/22/1997EP0754666A2 Process for the preparation of bis-(4-hydroxyaryl)alcanes
01/15/1997EP0752914A1 Supported lewis acid catalysts for hydrocarbon conversion reactions
01/15/1997EP0752912A1 Supported lewis acid catalysts derived from superacids useful for hydrocarbon conversion reactions
01/08/1997EP0752405A2 Process for the production of phenol
01/07/1997US5591311 Process for purifying a 2,6-dialkylphenol
01/07/1997CA2079731C Process for the debromination of naphtol dibrominated derivatives
01/01/1997CN1139107A Method for recovering phenol and xanthene values from waste polycarbonate
12/1996
12/31/1996US5589598 Process of purification of 2,6-diisopropylphenol
12/31/1996US5589517 N,n-di-substitituted mercaptoalkylamine sulfonic acid ion exchange resin as catalyst for condensation reaction of a phenol and a ketone to produce a bisphenol
12/18/1996EP0702596B1 Catalytic materials comprising layered clay macrospheres
12/18/1996CN1138023A Process for preparation of aromatic compounds by decarboxylation of aromatic carboxylic acids
12/17/1996US5585526 Preparation of P-fuchsones and synthesis of P-Dihydroxylated aromatic compounds therefrom
12/11/1996CN1137788A Process for making polyphenols from ketones or aldehydes and phenols
12/10/1996US5583268 Method to prepare ortho substituted phenol
12/05/1996WO1996038400A1 Method for preparing a meta-dihydroxylated aromatic compound
12/04/1996EP0745575A1 Method of synthesizing polyphenol compound and positive working photoresist composition comprising polyphenol compound
12/04/1996CN1137033A Co-cracking of BPA and phenol process tars
11/1996
11/26/1996US5578744 Catalytically active gel and a process for its preparation
11/26/1996US5578737 Chlorination process, alkylation of products of said process and some products thereof
11/20/1996EP0679151A4 Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane.
11/13/1996EP0742194A1 Process for the preparation of substituted phenols
11/06/1996EP0741122A1 Process for preparing aromatic compounds through decarboxylation of aromatic carboxylic acids
11/06/1996EP0740954A1 Process for the production of finely granulated solid chemicals
11/06/1996EP0642487B1 Acetophenone removed from phenol purification residues
11/03/1996CA2175535A1 Process for the preparation of aromatic compounds by decarboxylation of aromatic carboxylic acids
10/1996
10/31/1996WO1996033964A1 A process for the preparation of tetrabromobisphenol-a
10/30/1996CN1134313A Compound oxide catalyst for synthesizing benzene diphenol by phenol-hydrogen peroxide hydroxylation
10/29/1996US5569791 Production of phenol from a hydrocarbon feedstock
10/23/1996EP0738702A1 Method for recovering phenol and xanthene values from waste polycarbonate
10/23/1996EP0738698A2 Process for decomposition of cumene hydroperoxide
10/23/1996EP0638057A4 Recovering values from heavy ends in bisphenol-a production.
10/23/1996EP0519084B1 Process for producing simultaneously an aromatic hydroxy compound and a carbonyl compound
10/23/1996CN1033084C Process for preparing substd. vinylbenzene
10/22/1996US5567829 Method for recovering phenol and xanthene values from waste polycarbonate
10/16/1996CN1133204A Regeneration method for lost activity sulfourylation group organic polymer ion exchange resin bed
10/15/1996US5565689 Reactant for perfluoroalkylation of nucleophilic substrates with sodium perfluoroalkanesulphinates in an oxidizing medium
10/09/1996EP0735999A1 A method of cleaving arylethers
10/02/1996CN1132196A Bisphenol ester derivatives
10/02/1996CN1132193A Removal and neutralization of acid catalyst from products of cumene hydroperoxide cleavage
10/01/1996US5561095 Inorganic oxide support having immobilized on it a strong lewis acid and at least one weak lewis acid; cationic polymerization; alkylation; isomerization and cracking; reuse; durability
09/1996
09/24/1996US5559274 Production of phenol from a hydrocarbon feedstock
09/24/1996CA2145317A1 Method for purification of phenol
09/19/1996DE19509299A1 Heat stabilisation of phenolic bisphenol=A solns.
09/17/1996CA2054578C Process for debrominating dibrominated naphtalene derivatives
09/12/1996WO1996027576A1 A process for the preparation of tetrabromobisphenol-a
09/12/1996DE19509821C1 Removing phenol(s) and other organic cpds. from waste water, esp. in prodn. of olefin(s)
09/11/1996EP0731074A2 Tetraphenol compounds, process for producing the same and their use as photosensitisers
09/11/1996EP0731073A2 Co-cracking of BPA and phenol process tabs
09/11/1996CN1130618A Process for preparing high-purity p-cresol with crude p-cresol
09/04/1996EP0729447A1 Method of making 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane
09/03/1996US5552508 Difunctional bitricyclodecatriene monomers
08/1996
08/28/1996EP0728723A2 Process for the production of fluorenebisphenol
08/28/1996CN1129607A Preparation of non-aluminum Ti(Zr, V)-Si five-membered ring zeolite catalyst
08/23/1996EP0683761A4 A novel process for the production of high purity and ultrapure bisphenol-a.
08/22/1996WO1996025390A1 PRODUCTION OF ENANTIOMERICALLY ENRICHED ORTHO-SUBSTITUTED α,α-DIAROMATIC METHANOLS
08/21/1996CN1129208A Method of separating meta and para-ethylphenol
08/21/1996CN1129207A Process for production of 2,6-dichlorophenol by using O-chlorophenol
08/14/1996EP0725771A1 Process for making polyphenols from ketones or aldehydes and phenols
08/14/1996CN1128754A Method for treatment of mixture of hydroperoxide
08/13/1996US5545764 Process for the continuous production of high purity bisphenol A
08/13/1996CA2037109C Process for preparing bisphenol-a
08/07/1996EP0725049A1 Process for preparing aromatic olefins by palladacycle catalysis
08/06/1996US5543564 Process for releasing acidic organic compounds from salts thereof by carbon dioxide
08/06/1996US5543298 Method for assaying the sod activity by using a self-oxidizable compound necessary for its implementation, self-oxidizable compounds and preparation thereof
07/1996
07/30/1996US5541282 Polyethers
07/24/1996CN1127241A Separating epuration p-cresol technology by complexing extraction crystallization method
07/23/1996US5538599 From 1-phenyl ethanol, extractive distillation with purified sulfolane
07/17/1996EP0625209B1 Method for assaying the sod activity by using a self- oxidizable compound necessary for its implementation, self- oxidizable compounds and preparation thereof
07/17/1996CN1126717A Catalyst series for synthesizing 1-,2- and 3- substituted alkylphenols with different proportion by one-step process
07/11/1996WO1996020911A1 Process to produce tetrabromobisphenol with the reduced formation of alkyl bromide by-products
07/10/1996EP0720976A1 Process for preparing an adduct of a bisphenol with a phenolic compound
07/03/1996EP0571447B1 Catalytic hydroxylation of phenol
06/1996
06/27/1996WO1996019429A1 Process for preparing 4-hydroxystyrene
06/26/1996EP0718268A2 Process for the production of crystalline adduct of bisphenol A and phenol
06/26/1996EP0718267A2 Process for the production of crystalline adduct of bisphenol A and phenol and apparatus therefor
06/26/1996CN1125250A Phenol tar waste reduction process
06/25/1996US5530166 Cleaving cumyl hydroperoxide to dicumyl peroxide, cleaving dicumyl peroxide
06/25/1996US5530030 Nematicides against pine wood nematodes
06/19/1996EP0717024A1 Process for the recovery of phenol from an aqueous stream containing Na2So4
06/19/1996EP0716645A1 Propofol purification
06/19/1996CN1124922A Use of natural products and related synthetic compounds for the treatment of cardiovascular disease
06/18/1996US5527971 Process for the preparation of tetrabromobisphenol-A
06/18/1996US5527945 Diphenylheteroalkyl derivatives, the preparation thereof and drugs and cosmetics prepared therefrom
06/12/1996EP0716076A2 Bisphenolester derivatives
06/12/1996EP0716068A2 Removal and neutralization of acid catalyst from products of cumene hydroperoxide cleavage
06/12/1996CN1031989C Process and catalyst composition of alkylating benzene or substituted benzene or transalkylating alkylated benzene
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