Patents by Inventor Rainer Hamprecht
Rainer Hamprecht 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: 7682408Abstract: The present invention relates to a dyestuff of the formula (I) wherein each of G1 and G2, independently is hydrogen, (C1-C4)-alkyl, trifluoromethyl, halogen, nitro, cyano or —SO2—T, wherein T is halogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, aryl or aryloxy; K is a coupling component; and n is 1 or 2. The invention also relates to a process for its preparation and their use and for ink jet printing containing the ink.Type: GrantFiled: March 2, 2007Date of Patent: March 23, 2010Assignee: Dy Star Textilfarben GmbH & Co.Inventors: Andreas Endres, Rainer Hamprecht, Hartwig Jordan, Anthony Lawrence, Nigel Hall
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Publication number: 20090064426Abstract: The present invention relates to a dyestuff of the formula (I) wherein each of G1 and G2, independently is hydrogen, (C1-C4)-alkyl, trifluoromethyl, halogen, nitro, cyano or —SO2-T, wherein T is halogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, aryl or aryloxy; K is a coupling component; and n is 1 or 2. The invention also relates to a process for its preparation and their use and for ink jet printing containing the ink.Type: ApplicationFiled: March 2, 2007Publication date: March 12, 2009Applicant: DyStar Textilfarben GmbH & Co. Deutschland KGInventors: Andreas Endres, Rainer Hamprecht, Hartwig Jordan, Anthony Lawrence, Nigel Hall
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Patent number: 6706761Abstract: The invention relates to insecticide-comprising polymer-based compositions which, in order to recognize the point in time when the insecticide is exhausted, comprise at least one dye which, after the insecticide has evaporated, turns a different colour.Type: GrantFiled: November 13, 2001Date of Patent: March 16, 2004Assignee: S. C. Johnson & Son, Inc.Inventors: Mike-Dirk Bublitz, Dietmar Kisters, Rainer Hamprecht
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Patent number: 6627742Abstract: Hydroxypyridonemethide azo dyes conforming to the formula (I) or its tautomeric forms where X1 to X4, R1 and R2 are each as defined in the description part, are very useful for dyeing and printing hydrophobic synthetic fiber materials and their blends with natural fiber materials.Type: GrantFiled: December 4, 2002Date of Patent: September 30, 2003Assignee: DyStar Textilfarben GmbH & Co. Deutschland KGInventor: Rainer Hamprecht
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Patent number: 6191265Abstract: Azo dyes of the formula wherein the substituents are each as defined in the description, are useful for dyeing and printing synthetic textile materials.Type: GrantFiled: December 14, 1999Date of Patent: February 20, 2001Assignee: DyStar Textilfarben GmbH & Co. Deutschland KGInventor: Rainer Hamprecht
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Patent number: 5955615Abstract: Dyestuffs of the formula whereinD is the radical of a carbo- or heterocyclic diazo component,X represents O, NH, NT, NCOT, NCCH.sub.2 T or NSO.sub.2 T,and the other substituents have the meaning given in the description, are preferably suitable, if m=n=l=o, for dyeing and printing hydrophobic synthetic fiber materials and mixtures thereof with naturally occurring fiber materials.Type: GrantFiled: May 18, 1998Date of Patent: September 21, 1999Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 5808015Abstract: Dyestuffs of the formula ##STR1## wherein D is the radical of a carbo- or heterocyclic diazo component,X represents O, NH, NT, NCOT, NCCH.sub.2 T or NSO.sub.2 T,are preferably suitable, if m=n=l=o, for dyeing and printing hydrophobic synthetic fiber materials and mixtures thereof with naturally occurring fiber materials.Type: GrantFiled: September 18, 1996Date of Patent: September 15, 1998Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 5750761Abstract: A process for the preparation of compounds of the formula ##STR1## wherein the substituents X, Y and Z have the meaning given in the description, by reaction of compounds of the formula ##STR2## with a cyanide and an oxidizing agent other than Br.sub.2 in the presence of halides which offers industrial hygiene advantages and renders possible large-scale industrial access to dyestuff syntheses has been found.Type: GrantFiled: February 28, 1996Date of Patent: May 12, 1998Assignee: Bayer AktiengesellschaftInventors: Rainer Hamprecht, Claudia Muller
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Patent number: 5644039Abstract: Mixtures of dyestuffs of the formulae (I) and (II) ##STR1## which are outstanding substitute products for the anthraquinone dyestuff Disperse Blue 56, have been found.Type: GrantFiled: October 13, 1995Date of Patent: July 1, 1997Assignee: Bayer AktiengesellschaftInventors: Rainer Hamprecht, Heinz-Dietrich Jordan
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Patent number: 5194598Abstract: Azo dyestuffs of the formula ##STR1## in which X denotes H, F, Cl, Br, I, R, CO.sub.2 R, CN, CF.sub.3 and the like,Y/Z denotes H, CH.sub.3, Cl or Br,R.sup.1, R.sup.2 and R denote C.sub.1 -C.sub.4 -alkyl andR.sup.3 and R.sup.4 denote H or CH.sub.3, are highly suitable for the dyeing of polyester fibres, where they are distinguished by a high thermomigration fastness.The preparation of the dyestuffs is preferably carried out by so-called "halogen/cyano exchange".Type: GrantFiled: February 20, 1991Date of Patent: March 16, 1993Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 5028701Abstract: Disperse dyestuffs of the formula ##STR1## in which A/B denotes H, alkyl, C1 or O-alkyl,R.sub.1, R.sub.2, R.sub.3 denote H or alkyl,R.sub.4 denotes alkyl, aryl or COO-alkyl,R.sub.5 denotes alkyl or aryl,Y denotes H or CN,X denotes NO.sub.2, Cl, Br, CN or SO.sub.2 -alkyl,V denotes NO.sub.2, Cl, Br, COOR.sub.5, COR.sub.5 CF.sub.3 or alkyl andZ denotes H, Cl, Br, SCN or CN,are very color-strong and are suitable in particular for the dyeing of polyester by a wide range of methods.Type: GrantFiled: June 15, 1989Date of Patent: July 2, 1991Assignee: Bayer AktiengesellschaftInventors: Rainer Hamprecht, Manfred Hoppe
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Patent number: 4988752Abstract: Process for the coloring of thermoplastics in the mass, characterized in that dyestuffs of the formula ##STR1## are used in which X denotes H, alkyl, preferably C.sub.1 -C.sub.6 -alkyl, cycloalkyl, preferably C.sub.5 -C.sub.6 -cycloalkyl, CF.sub.3, halogen, preferably F, Cl, Br,Y denotes H, alkyl, preferably C.sub.1 -Chd 6-alkyl, in particular CH.sub.3, halogen, preferably F, Cl, Br,R.sup.1 denotes alkyl, preferably C.sub.1 -C.sub.6 -alkyl, alkoxyalkyl, preferably C.sub.1 -C.sub.4 -alkoxy-C.sub.2 -C.sub.4 -alkyl, phenyl-C.sub.1 -C.sub.6 -alkyl which is unsubstituted or substituted in the phenyl radical, for example by CH.sub.3, Cl or Br,R.sup.2 denotes alkyl, preferably C.sub.1 -C.sub.6 -alkyl, alkoxyalkyl, preferably C.sub.1 -C.sub.6 -alkoxy-C.sub.2 -C.sub.4 -alkyl, phenyl-C.sub.1 -C.sub.6 -alkyl which is unsubstituted or substituted in the phenyl radical, for example by CH.sub.3, Cl, Br, andR.sup.3 denotes H, alkyl, preferably C.sub.1 -C.sub.6 -alkyl, in particular CH.sub.3.Type: GrantFiled: May 31, 1989Date of Patent: January 29, 1991Assignee: Bayer AktiengesellschaftInventors: Rainer Hamprecht, Michael Kressner, Georg Pape
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Patent number: 4888432Abstract: 2-Aminothiophenes of the formula ##STR1## wherein R=substituent and n=0-4, are prepared by dehydrogenating ring closure of thioamides of the formula ##STR2## The 2-aminothiophenes are useful for preparing useful azo dyestuffs. A process for preparing a compound of the formula ##STR3## comprising reacting a compound of the formula ##STR4## in which R and n have the abovementioned meanings with a compound of the formula ##STR5## in which T denotes NH.sub.2, aryl or alkyl, in the presence of an acid. An azo dyestuff of the formula ##STR6## in which V denotes Cl, Br or CF.sub.3,W denotes Cl, Br or NO.sub.2,R.sub.1 denotes hydrogen, halogen, alkyl, alkoxy, alkoxyalkyl or aryloxy,R.sub.2 denotes alkenyl or OH-, halogen-, CN-, CO.sub.2 -alkyl-, aryl-, cycloalkyl-, alkoxy-, aryloxy-, OCO-alkyl-, OCO-aryl-, OCONH-alkyl- or OCO.sub.2 -alkyl-substituted alkyl,R.sub.3 denotes hydrogen or identical or different R.sub.2 andR.sub.2 denotes hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, alkoxy, halogen, CF.sub.Type: GrantFiled: October 15, 1987Date of Patent: December 19, 1989Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 4808723Abstract: Benzothiazoles of the formula ##STR1## in which R represents H, NH.sub.2 or R.sub.1, R.sub.1 denoting alkyl or aryl, and it being possible for the ring A to have other substituents, are obtained in a simple manner by reacting the readily accessible compounds of the formula ##STR2## in which X denotes a leaving group andY denotes NO.sub.2 or NH.sub.2, with specified amounts of a compound of the formula ##STR3## The compounds I are intermediates for dyestuffs and plant-protection agents.Type: GrantFiled: January 3, 1984Date of Patent: February 28, 1989Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 4776886Abstract: A halftone gravure printing ink(A) about 2 to about 20% by weight of colorant,(B) about 10 to about 40% by weight of resin and(C) about 80 to about 50% by weight of solventwherein said colorant comprises azo dyestuff of the formula ##STR1## in which A.sub.1, A.sub.2 and A.sub.3 denote hydrogen, halogen, --CN, --NO.sub.2, C.sub.1 -C.sub.6 -alkyl, cycloalkyl, C.sub.1 -C.sub.18 -alkoxy, optionally substituted phenoxy, optionally substituted C.sub.1 -C.sub.18 -alkylsulphonyl, optionally substituted phenylsulphonyl, optionally substituted sulphamoyl, optionally substituted carbamoyl, optionally substituted phenylazo, C.sub.1 -C.sub.18 -alkoxycarbonyl, --CF.sub.3, --SCN, C.sub.1 -C.sub.12 -alkylmercapto, C.sub.1 -C.sub.6 -alkylcarbonyl, optionally substituted phenylcarbonyl or --OH,A.sub.4 and A.sub.5 denote hydrogen, halogen, optionally substituted C.sub.1 -C.sub.6 -alkyl, optionally substituted C.sub.1 -C.sub.6 -alkoxy, --NH--CO--CH.sub.2 CH.sub.2 OA.sub.8, --NH--CO--A.sub.8, --NH--SO.sub.2 --A.sub.Type: GrantFiled: August 4, 1986Date of Patent: October 11, 1988Assignee: Bayer AktiengesellschaftInventors: Manfred Lorenz, Rainer Hamprecht, Artur Haus
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Patent number: 4582898Abstract: Aniline derivatives of the formula ##STR1## wherein X=alkyl,Z=H or alkyl, andY=S-alkyl, SO.sub.2 -alkyl, CO.sub.2 -R (R=alkyl, cycloalkyl, or H) or--if Z=H--Br,are diazo components for preparing valuable azo dyestuffs and starting materials for preparing compounds of the formula ##STR2## and new azo dyestuffs derived therefrom and which--in their nonionic form--are highly suitable for dyeing polyester fibres in blue shades having high tinctorial strength and high fastness levels.Type: GrantFiled: October 12, 1984Date of Patent: April 15, 1986Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 4524124Abstract: Monoazo dyes corresponding to the following formula ##STR1## are suitable for use as light-stable cyan image dyes stable to reducing agents for the dye diffusion transfer process.In the above formula:Q represents the remainder of the molecule required to complete a fused benzene or thiophene ring, which contains additional electron acceptor groups, or to complete a fused pyridine, pyrimidine, pyridazine, pyrazine or thiazole ring;G represents --OH, acyloxy;R.sup.1 represents H or one or two identical or different radicals selected from the group consisting of halogen, acyl, acylamino and --CN;Y represents H, --OH, an amino group optionally substituted by alkyl or aryl, a cyclic amino group or a group of the formula --NH--SO.sub.2 --R.sup.2 ;R.sup.2 represents alkyl, aryl, an amino group optionally substituted twice by alkyl or a cyclic amino group;n=0, 1 or 2.Type: GrantFiled: June 18, 1984Date of Patent: June 18, 1985Assignee: Agfa-Gevaert AktiengesellschaftInventors: Peter Bergthaller, Rudolf Stolzenburg, Paul Marx, Rainer Hamprecht
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Patent number: 4479899Abstract: Azo compounds of the formula ##STR1## wherein R.sub.1 is alkyl, alkenyl, aralkyl, aryl or hetaryl,R.sub.2 is hydrogen or alkyl,R.sub.3 is hydrogen, alkyl, halogen, OR.sub.1 etc.R.sub.4 is hydrogen, alkyl, aralkyl, aryl or cycloalkyl,R.sub.5 is hydrogen, alkyl, alkenyl or aralkyl,Y is cyano, halogen, trifluoromethyl, nitro or SO.sub.2 R.sub.1,Y.sub.1 is halogen or preferably cyano,X.sub.1 is hydrogen or a substituent with a Hammet .sigma. para value of -0.3 to +0.3,X.sub.2 is hydrogen, halogen etc., are useful for dyeing polyester fibre materials in clear red to violet shades with good general fastness properties.Type: GrantFiled: March 1, 1983Date of Patent: October 30, 1984Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 4452609Abstract: Azo compounds of the formula ##STR1## wherein R.sub.1 is alkyl, alkenyl, aralkyl, aryl or hetaryl,R.sub.2 is hydrogen or alkyl,R.sub.3 is hydrogen, alkyl, halogen, OR.sub.1 etc.R.sub.4 is hydrogen, alkyl, aralkyl, aryl or cycloalkyl,R.sub.5 is hydrogen, alkyl, alkenyl or aralkyl,Y is cyano, halogen, trifluoromethyl, nitro or SO.sub.2 R.sub.1,Y.sub.1 is halogen or preferably cyano,X.sub.1 is hydrogen or a substituent with a Hammet .sigma. para value of -0.3 to +0.3,X.sub.2 is hydrogen, halogen etc.,are useful for dyeing polyester fibre materials in clear red to violet shades with good general fastness properties.Type: GrantFiled: December 13, 1982Date of Patent: June 5, 1984Assignee: Bayer AktiengesellschaftInventor: Rainer Hamprecht
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Patent number: 4424156Abstract: An azo dyestuff suited for dyeing polyester, of the formula ##STR1## in which Hal is F, Cl, Br or I,R.sub.1 is a C.sub.1 -C.sub.10 -aliphatic hydrocarbyl or a C.sub.5 -C.sub.8 -cycloalkyl radical optionally substituted by OH, halogen, alkoxy, aryloxy or acyloxy,R.sub.2 is an optionally substituted aliphatic hydrocarbyl, aryl or hetaryl radical,R.sub.1 and R.sub.2 being free from --SO.sub.3 H and/or --COOH radicals,Z.sub.1 to Z.sub.4 each independently is hydrogen, alkyl, cycloalkyl, aralkyl, halogen, --CN, --NO.sub.2, --CF.sub.3, --SO.sub.2 Q, --SO.sub.2 NVW, --COW, --CONVW, --CO.sub.2 W, --OQ, --NVW, --NWCOW, --NWSO.sub.2 Q or --NHCO.sub.2 Q, orZ.sub.2 may also be arylazo, andZ.sub.3 may also be ##STR2## and Z.sub.3 and Z.sub.4 together can be ##STR3## Q is alkyl, aralykl or aryl, U is alkyl,V is H, alkyl or aralkyl, andW is V or aryl.Type: GrantFiled: September 10, 1980Date of Patent: January 3, 1984Assignee: Bayer AktiengesellschaftInventors: Rainer Hamprecht, Klaus Leverenz