Patents by Inventor Gunter Rosch
Gunter Rosch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4142044Abstract: Compounds of the formula ##STR1## wherein X is O or S, A is a group of the formula ##STR2## and R.sub.1, R.sub.2 and R.sub.3 are non-chromophorous substituents. They are prepared by reacting a 4'-benzoxa(thia)zolyl-2-stilbene-4-carbonic acid chloride with an amidoxim containing the group R.sub.3 or by reacting a 4'-benzoxa(thia)zolyl-2-stilbene-4-amidoxime with an acid chloride containing the group R.sub.3.These compounds are used as optical brighteners.Type: GrantFiled: March 4, 1977Date of Patent: February 27, 1979Assignee: Hoechst AktiengesellschaftInventors: Dieter Gunther, Rudiger Erckel, Erich Schinzel, Gunter Rosch
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Patent number: 4129412Abstract: Mixtures of optical brighteners containing 0.05 to 1% of a 4-benzoxazolystilbene derivative and 1 to 0.05% of a 1,4-bis-benzoxazolyl- or bis-benzthiazolyl-naphthalene derivative. These mixtures show a higher degree of whiteness than an equal amount of only one of the two components.Type: GrantFiled: June 28, 1977Date of Patent: December 12, 1978Assignee: Hoechst AktiengesellschaftInventors: Dieter Gunther, Erich Schinzel, Rudiger Erckel, Gunter Rosch
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Patent number: 4122257Abstract: Furanyl-(2)-1,2,4-oxadiazoles of the formula ##STR1## wherein A represents an aromatic mononuclear or binuclear ring system which with two adjacent carbon atoms is fused with the furan nucleus in the manner indicated,R represents hydrogen, a lower alkyl group, an optionally substituted phenyl group, as well as an optionally functionally modified carboxy group,X represents a direct bond, as well as the following divalent radicals ##STR2## B represents a straight-chained or branched, optionally substituted alkyl group or an optionally substituted aryl or heteroaryl group.These compounds are suitable for the optical brightening of high molecular weight organic substances, especially for textile materials of synthetic polymers.Type: GrantFiled: June 2, 1977Date of Patent: October 24, 1978Assignee: Hoechst AktiengesellschaftInventors: Gunter Prossel, Erich Schinzel, Gunter Rosch
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Patent number: 4110246Abstract: Compounds of the formula ##STR1## wherein R.sup.1 to R.sup.8 each mean, independent from one another, a hydrogen atom or a non chromophoric substituent, R.sup.9 means a hydrogen atom, an alkyl group, a halogen atom, preferably a chlorine or bromine atom, an optionally functionally modified carboxy or sulfo group. They are prepared by reacting 1 mol of 1,7-naphthalene dicarboxylic acid or its acid chloride with 2 mols of an o-aminophenol and subsequent cyclization of the di-N,N'-acyl compounds obtained in the first step. These compounds are valuable optical brighteners.Type: GrantFiled: November 7, 1977Date of Patent: August 29, 1978Assignee: Hoechst AktiengesellschaftInventors: Hans Frischkorn, Gunter Rosch
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Patent number: 4048185Abstract: Compounds of the general formula I ##STR1## in which R represents hydrogen or a lower alkyl radical which may be further substituted, n is an integer of from 1 to 4, and which may contain further non-chromophoric substituents. They are prepared by reaction of the dichloride of naphthalene-1,4-dicarboxylic acid with an o-aminophenol and subsequent ring closure. These compounds can be used as optical brighteners.Type: GrantFiled: June 8, 1976Date of Patent: September 13, 1977Assignee: Hoechst AtiengesellschaftInventors: Ulrich Pintschovius, Erich Schinzel, Gunter Rosch
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Patent number: 4039555Abstract: Condensation of a benzofuran, which is substituted in 2-position by a carboxylic acid hydrazide group bound to the benzofuran nucleus via a bridgemember being in conjugation with the double bonds of the benzofuran, with a benzofuran-2-carboxylic acid halide yields a bisacyl hydrazide which is capable of oxdiazol ring closure while splitting off water. The so-obtained oxdiazoles are optical brighteners, especially for polyester materials.Type: GrantFiled: November 14, 1975Date of Patent: August 2, 1977Assignee: Hoechst AktiengesellschaftInventors: Wilfried Sahm, Erich Schinzel, Gunter Rosch
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Patent number: 4039531Abstract: Compounds of the formula (I) ##STR1## in which R is hydrogen, triphenyl-methyl or lower alkyl, which may be substituted by lower carbalkoxy, carbonamido, mono- or dialkyl carbonamido, carboxy or benzoyl, Z is cyano, carbalkoxy, carbonamido or imidazolyl, X is hydrogen, chlorine, methyl, methoxy, cyano or lower carbalkoxy, n is 1 to 3, and A is an aromatic carbocyclic group or an aromatic heterocyclic 5- or 6-membered group as well as their N-alkylated quaternary reaction products. These compounds are useful as optical brighteners and lacquers, natural or synthetic fibers and films, foils or other shaped forms made therefrom.Type: GrantFiled: September 12, 1975Date of Patent: August 2, 1977Assignee: Hoechst AktiengesellschaftInventors: Dieter Gunther, Rudiger Erckel, Erich Schinzel, Gunter Rosch
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Patent number: 4016195Abstract: Monostyryl-1-naphthalenes and analogous compounds having a naphthalene, thiophene, furane or pyridine nucleus instead of the phenyl moiety of the styryl residue, which are obtained by the Horner synthesis, are useful as optical brighteners.Type: GrantFiled: February 13, 1976Date of Patent: April 5, 1977Assignee: Hoechst AktiengesellschaftInventors: Ulrich Pintschovius, Erich Schinzel, Gunter Rosch
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Patent number: 4002423Abstract: New bisbenzofuranes which are connected by a direct bond or a bridgemember being in conjugation with the double bonds of the furane nuclei are obtained by intra- or intermolecular condensation reactions. The products are useful as optical brighteners, especially for detergents.Type: GrantFiled: October 11, 1974Date of Patent: January 11, 1977Assignee: Hoechst AktiengesellschaftInventors: Wilfried Sahm, Erich Schinzel, Gunter Rosch
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Patent number: 4001130Abstract: 1,3-Butadienes which are substituted at both terminal carbon atoms with phenyl, naphthyl, theinyl or furyl groups or one benzoxazolyl group are useful as optical brighteners for detergents. The butadienes, some of which are known, can be obtained by HORNER syntheses.Type: GrantFiled: January 7, 1974Date of Patent: January 4, 1977Assignee: Hoechst AktiengesellschaftInventors: Erich Schinzel, Wilfried Sahm, Gunter Rosch
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Patent number: 4001221Abstract: Compounds of the formula (I) ##STR1## in which R is hydrogen, or lower alkyl, which may be substituted by phenyl, hydroxy, lower carbalkoxy or cyano, X is hydrogen, chlorine, methyl, methoxy, cyano or lower carbalkoxy, n is 1 to 3, and A is an aromatic carboxylic group or an aromatic hetero-cyclic 5- or 6-membered group as well as their N-alkylated quaternary reaction products. These compounds are useful as optical brighteners for lacquers, natural or synthetic fibers and films, foils or other shaped forms made therefrom.Type: GrantFiled: September 12, 1975Date of Patent: January 4, 1977Assignee: Hoechst AktiengesellschaftInventors: Dieter Gunther, Hans Jurgen Nestler, Gunter Rosch, Erich Schinzel
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Patent number: 3998812Abstract: 1,5-Diaryl-3-styryl pyrazolines, which are obtained by condensation of a distyryl ketone and an aliphatic 4-hydrazino-phenyl sulfone, are useful as optical brighteners, especially in admixture with known 1,3-diaryl pyrazoline brighteners.Type: GrantFiled: March 7, 1974Date of Patent: December 21, 1976Assignee: Hoechst AktiengesellschaftInventors: Helmut Mengler, Gunter Rosch, Erich Schinzel, Otto Smerz
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Patent number: 3996213Abstract: Compounds of the formula ##STR1## and the corresponding lower alkyl quaternary salts thereof in which A represents a group of the formula ##STR2## and in which R.sup.1 stands for a group of the formula ##STR3## whereby R represents a hydrogen atom or a lower alkyl group, R.sup.2 has the same meaning as R.sup.1 or stands for a hydrogen atom or a group of the formula ##STR4## whereby the aromatic rings may be substituted by non-chromophoric substituents. Due to their good fluorescence these compounds can be used as optical brighteners for organic materials, especially textile materials.Type: GrantFiled: June 2, 1975Date of Patent: December 7, 1976Assignee: Hoechst AktiengesellschaftInventors: Erich Schinzel, Hans Frischkorn, Gunter Rosch
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Patent number: 3974172Abstract: Benzofuran compounds of the formula ##SPC1##Wherein E is a bivalent bridging member of the formula ##SPC2##S is hydrogen, halogen, lower alkyl, carboxy, sulfo, cyano, lower carboalkoxy, carbonamido, lower mono- or dialkyl carbonamido, sulfonic acid lower alkyl ester, sulfonamido, lower mono- or dialkyl sulfonamido or phenyl; P, Q, T and U are hydrogen or halogen, lower alkyl, lower alkoxy, phenyl, carboxy, cyano, lower carboalkoxy, lower carbo-alkoxy substituted by a member selected from the group consisting of lower alkoxy, lower dialkylamino and lower trialkyl ammonium, carbonamido, lower mono- or di-alkyl carbonamido, sulfo, sulfonic acid lower alkyl ester, sulfonamido or lower mono- or dialkyl sulfonamido or P and Q together or T and U together are lower alkylene or an annellated phenyl ring, and n is 1 to 3. These compounds can be synthetized by a condensation reaction of the corresponding carboxylic acid derivative with an ortho-aminophenol or by HORNER or similar syntheses forming said bridging member.Type: GrantFiled: February 6, 1974Date of Patent: August 10, 1976Assignee: Hoechst AktiengesellschaftInventors: Wilfried Sahm, Erich Schinzel, Gunter Rosch
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Patent number: 3972877Abstract: 1,3-BUTADIENES CONTAINING AT LEAST ONE TERMINAL 2-BENZOFURANYL GROUP ARE OBTAINABLE BY HORNER syntheses. The products are optical brighteners.Type: GrantFiled: January 7, 1974Date of Patent: August 3, 1976Assignee: Hoechst AktiengesellschaftInventors: Erich Schinzel, Wilfried Sahm, Gunter Rosch
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Patent number: 3957846Abstract: Compounds of the formula ##SPC1##Wherein R' is carboxy, lower carboalkoxy or lower carboalkoxy substituted by lower dialklamino or lower trialkylammonium and Ar is phenyl substituted by cyano, carboxy or lower carboalkoxy. These compounds show a characterized fluorescence when dissolved and are suitable for the optical brightening of different organic materials such as lacquers or synthetic fibres, for example fibres made of acetyl cellulose, polyesters, polyolefines, polyvinyl chloride or polyvinylidene chloride and films, foils, ribbons or shaped articles made from these materials.Type: GrantFiled: March 22, 1974Date of Patent: May 18, 1976Assignee: Hoechst AktiengesellschaftInventors: Ulrich Pintschovius, Erich Schinzel, Gunter Rosch
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Patent number: 3951965Abstract: 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.Type: GrantFiled: September 18, 1974Date of Patent: April 20, 1976Assignee: Hoechst AktiengesellschaftInventors: Helmut Mengler, Erich Schinzel, Gunter Rosch
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Patent number: 3931215Abstract: 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.Type: GrantFiled: January 21, 1974Date of Patent: January 6, 1976Assignee: Hoechst AktiengesellschaftInventors: Anton Horn, Erich Schinzel, Wilfried Sahm, Gunter Rosch