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公开(公告)号：DE2400656A1
公开(公告)日：1974-08-08
申请号：DE2400656
申请日：1974-01-08
Applicant: HOECHST AG
Inventor： HORN ANTON DR RER NAT , SCHINZEL ERICH DR PHIL , SAHM WILFRIED DR RER NAT , ROESCH GUENTER
IPC: C08K5/00 , C07D307/79 , C07D307/92 , C08K5/3442 , C08L33/00 , C08L33/02 , C09B1/00 , C11D3/42 , C07D49/38 , C07D5/40
Abstract: Novel benzofuran containing a benzimidazolyl group are obtained by reacting a benzofuran containing a carboxylic acid halide group with either an ortho-phenylene diamine or an ortho-nitro-aniline derivative, in the latter case reducing the nitro intermediate to the corresponding (aminophenyl)-amide and splitting off water by closing the imidazole ring. The products are optical brighteners, especially for acrylonitrile polymers.
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公开(公告)号：DE3027479A1
公开(公告)日：1982-03-04
申请号：DE3027479
申请日：1980-07-19
Applicant: HOECHST AG
Inventor： MARTINI THOMAS DIPL CHEM DR RE , SCHINZEL ERICH DR PHIL , FRISCHKORN HANS DIPL CHEM DR R , FRIEDRICH HERBERT DIPL CHEM DR , PROBST HEINZ
Abstract: Mixtures of optical brighteners consisting of 1 to 60% by weight of a brightener from the bisbenzoxazolylnaphthalene series and 99 to 40% by weight of one or more brighteners of the formulae 2 to 10 listed in the description.
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Patent Agency Ranking
公开(公告)号：DE2444784A1
公开(公告)日：1975-04-03
申请号：DE2444784
申请日：1974-09-19
Applicant: HOECHST AG
IPC: C08K5/00 , C07D251/68 , C08K5/16 , C08L77/00 , C09B57/00 , D06L3/12 , C07D251/48
Abstract: Condensation compounds of 2 mols of cyanuric acid with 1 mol of 4,4'-diaminostilbene-2,2'-disulfonic acid, at least two mols of a lower alkylene diamine which is acylated at one nitrogen atom and, optionally, another two mols of another amine or an alcohol or a phenol are useful as optical brighteners, especially for cellulosic and polyamide materials.
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公开(公告)号：DE2939916A1
公开(公告)日：1981-04-23
申请号：DE2939916
申请日：1979-10-02
Applicant: HOECHST AG
Inventor： SCHOENBERGER NORBERT DR RER NA , SCHINZEL ERICH DR PHIL , MARTINI THOMAS DR RER NAT , ROESCH GUENTHER
IPC: C09B57/00 , C07D235/02 , C07D235/20 , C07D235/24 , C07D487/14 , D06L3/12
Abstract: Compounds of the general formula (1) (1) wherein R1 denotes hydrogen, halogen, alkyl, alkoxy or, conjointly with R2, a fused benzo ring, R2 denotes hydrogen, alkyl, alkoxy, halogen, phenyl, cyano, carboalkoxy, carboxyl, carbonamido, monoalkylcarbonamido, dialkylcarbonamido, sulfo, alkylsulfonyl, alkyloxysulfonyl, sulfonamido, monoalkylsulfonamido or dialkylsulfonamido or, conjointly with R3, a fused benzo ring, R3 has the same meaning as R2, R4 denotes hydrogen, alkyl, alkoxy, halogen or, conjointly with R3, a fused benzo ring, R5 denotes alkyl, hydroxyalkyl, alkoxyalkyl, optionally substituted aralkyl, cyanoethyl, cycloalkyl or a group of the formulae -CH2CN, -CH2CONH2 or -CH2COO-alkyl, A denotes a group of the formulae or -(CH2)4- R6 denotes hydrogen, alkyl, hydroxyalkyl, alkoxyalkyl, aralkyl or optionally substituted phenyl, n denotes 1, 2 or 3 and X(-) denotes a halide, alkylsulfonate, alkylsulfate, alkylphenylsulfonate or phenylsulfonate ion, and processes for their preparation and their use as optical brighteners.
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公开(公告)号：DE2937231A1
公开(公告)日：1981-04-02
申请号：DE2937231
申请日：1979-09-14
Applicant: HOECHST AG
Inventor： SCHINZEL ERICH DR PHIL
IPC: C07D307/79 , C07D307/80 , C07D409/14 , C07F9/54
Abstract: Process for the manufacture of optically brightening bis-benzofuranyl compounds by cyclization of compounds of the formula in aprotic solvents and in the presence of alkali metal or alkaline earth metal carbonates.
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公开(公告)号：DE2509514A1
公开(公告)日：1976-09-16
申请号：DE2509514
申请日：1975-03-05
Applicant: HOECHST AG
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