Patents by Inventor Karl-Heinz Keil

Karl-Heinz Keil 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).

  • Patent number: 6028192
    Abstract: The present invention relates to a process for the preparation of compounds of the formula 1 ##STR1## by reacting a secondary acid amide of the formula 2 ##STR2## with an acid chloride of the formula 3 ##STR3## in the presence of N,N-diisopropyl-N-ethylamine. R.sup.1, R.sup.2 and R.sup.3 are alkyl or alkenyl radicals, if required also aryl radicals. The compounds of the formula 1 are suitable for use as insecticides or bleach activators.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: February 22, 2000
    Assignee: Clariant GmbH
    Inventors: Johannes Becherer, Klaus Delpy, Karl-Heinz Keil, Bernhard Mees
  • Patent number: 5530093
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: June 25, 1996
    Assignee: Cassella Aktiengesellschaft
    Inventors: Fritz Engelhardt, Willi Steckelberg, Karl-Heinz Keil, Ralf Zerrer
  • Patent number: 5492995
    Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which X stands, at least once, for a group of the formula VII ##STR2## and, at least once, a group of the formula VIII ##STR3## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: February 20, 1996
    Assignee: Hoechst Aktiengsellschaft
    Inventors: Fritz Engelhardt, Karl-Heinz Keil, Jurgen Kuhlwein, Wilfried Schuler, Willi Steckelberg, Ralf Zerrer, Werner Antwerpen
  • Patent number: 5389280
    Abstract: Stable and homogeneous aqueous formulations of surfactantsStable and homogeneous aqueous formulations of surfactants having an HLB value of less than or equal to 13, which additionally contain a compound of the formula I ##STR1## in which R.sup.1 is C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkenyl, phenyl, alkylphenyl or phenalkyl having in each case 1 to 4 carbon atoms in the alkyl chain or cyclohexyl, R.sup.2 is hydrogen or one of the radicals mentioned for R.sup.1, or R.sup.1 and R.sup.2, together with the nitrogen atom, are a heterocyclic radical, M is an alkali metal cation, an ammonium cation or one equivalent of an alkaline earth metal or aluminium cation and m and n in each case independently of one another are numbers from 6 to 8.By the presence of the compounds of the formula I, it is possible to prepare stable and homogeneous aqueous formulations even from those surfactants which are otherwise only sparingly soluble or not soluble at all in water.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: February 14, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Thomas Martini, Karl-Heinz Keil, Ignaz Wimmer
  • Patent number: 5230711
    Abstract: Water-soluble sulphur dyes can be applied to cellulose without reducing agents, without added salt and without oxidising agents if the cellulose has been grafted with a polymer obtained by polymerisation of at least one N-containing basic monomer.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: July 27, 1993
    Assignee: Cassella AG
    Inventors: Karl-Heinz Keil, Thomas Martini
  • Patent number: 5144040
    Abstract: In a process for preparing 2-substituted 1-(acylaminoalkyl)-2-imidazolines of the general formula I ##STR1## where R is an alkylene radical and R.sup.1 is a fatty acid radical, for example a fatty acid and a dialkylenetriamine are reacted with one another in a molar ratio of (1.8 to 2.0):1 by initially introducing one starting material at a temperature T.sub.1 and metering in the second starting material as a liquid, maintaining in the reaction mixture during the addition a temperature T.sub.1 and after the addition until the start of the cyclization a temperature T.sub.2 and distilling off the resulting water or alcohol via a rectification column and, after the acylation product has been formed, cyclizing in a conventional manner, T.sub.1 being a temperature of 170.degree. C. to the boiling point of the initially introduced starting material, but not higher than 250.degree. C., and T.sub.2 being a temperature of 170.degree. to 250.degree. C.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: September 1, 1992
    Assignee: Cassella Aktiengesellschaft
    Inventors: Georg-Wolfgang Eckhardt, Karl-Heinz Keil, Manfred Schrod
  • Patent number: 5100673
    Abstract: Polyelectrolyte membrane capsules are composed of a semi-permeable membrane and an active material enclosed by it, the membrane being formed of a biocompatible, non-toxic polyacid and a polybase; the polybase is composed of repeating monomer units of the formula (I) ##STR1## in which R.sup.1 and R.sup.2 have the indicated meanings.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: March 31, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hebert Bader, Karl-Heinz Keil, Diether Ruppel, Merten Schlingmann, Axel Walch
  • Patent number: 5041553
    Abstract: In the process for the preparation of 2-substituted 1-(acylaminoalkyl)-2-imidazolines of the general formula I ##STR1## wherein R denotes an alkylene radical and R.sup.1 denotes a fatty acid radical, for example, a fatty acid and a dialkylenetriamine are reacted in a molar ratio of (1.9 to 2.0): 1 in such a way that the dialkylenetriamine is initially introduced hot under an inert gas atmosphere and the fatty acid is metered in hot and the amido amine formation is subsequently completed by heating to temperatures from 140.degree. to 190.degree. C. and the cyclization to the compound of the formula I is subsequently carried out at an under-pressure of at least 50 mbar.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: August 20, 1991
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Georg-Wolfgang Eckardt, Herbert Wirtz, Helmut Berenbold, Werner Wellbrock, Horst Frohlich
  • Patent number: 5006129
    Abstract: Process for dyeing textile material with pigment dyes, which comprises1. pretreating the textile material with a polymer which consists wholly or partly of monomeric units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen, (C.sub.1 -C.sub.22)alkyl which may be interrupted by --CO--NH-- or --NH--CO--, or C.sub.1 -C.sub.4 -hydroxyalkyl,R.sup.3 and R.sup.4 are each hydrogen or methyl, and Y.sup.- is a monovalent anion or one equivalent of a polyvalent anion,2. then dyeing with a pigment dye in the presence of a leveling or dispersing agent by the exhaust method and if necessary3. treating the dyeing in a liquor with a pigment binder and subsequently fixing it.This process makes it possible to dye textile material, in particular ready-made jeans garments, with pigment dyes by an exhaust method.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: April 9, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Thomas Martini, Karl-Heinz Keil, Ulrich Karsunky, Klaus Sternberger
  • Patent number: 4988365
    Abstract: A process for the alkali-free dyeing and printing of cellulose fibers by means of reactive dyes, direct dyes, acid dyes, water-soluble sulfur dyes or sulfur vat dyes, which comprises pretreating the textile material to be dyed with a wetting agent and a reaction product of an epihalogenohydrin with ammonia or an amine of the formula ##STR1## in which A is hydrogen, alkyl having 1 to 5 carbon atoms, hydroxyalkyl having 1 to 5 carbon atoms,R is alkyl having 1 to 5 carbon atoms, hydroxyalkyl having 1 to 5 carbon atoms,a group of the formula ##STR2## (n=0 to 5), a group of the formula ##STR3## (X=oxygen or sulfur) (n=0 to 5), or R and A together are ##STR4## subsequently dyeing them by conventional methods, but without alkali, by means of the dyes mentioned, and completing the dyeing by rinsing, soaping and drying.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: January 29, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Sternberger, Karl-Heinz Keil
  • Patent number: 4977239
    Abstract: A water-soluble organic polybase which is useful for the cationization of asbestos-free, cellulose fiber filter media is prepared by reacting a mixture of a compound of the formulaR.sup.2 --CO--R.sup.1 --COOHand a polyalkyleneimine with a difunctional alkylating agent, wherein R.sup.1 is a single bond or alkylene having 1 to 10 carbon atoms and R.sup.2 is inter alia a moiety of the formulaH.sub.2 N--(CH.sub.2).sub.u --NH--(CH.sub.2).sub.u --NH).sub.wwherein u is the number 2, 3, 4 or 5 and w is the number 0, 1, 2 or 3.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: December 11, 1990
    Assignee: Cassella Aktiengesellschaft
    Inventors: Walter Kamutzki, Karl-Heinz Keil
  • Patent number: 4810254
    Abstract: The wet-fastness properties of cellulose materials dyed with sulfur dyestuffs is improved by treating the cellulose materials, before, during or after dyeing, with a polymer which is a copolymer or homopolymer of a monomer of the formula ##STR1## wherein R.sup.1 and R.sup.2 denote, for example, hydrogen or (C.sub.1 -C.sub.22)-alkyl; R.sup.3 and R.sup.4 denote hydrogen or methyl; and Y.sup..crclbar. denotes, for example, a monovalent anion.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: March 7, 1989
    Assignee: Cassella Aktiengesellschaft
    Inventors: Wolfgang Bauer, Karl-Heinz Keil, Gert Nagl, Manfred Kaiser, Joachim Steinbach, Klaus Sternberger
  • Patent number: 4806126
    Abstract: Process for alkali-free dyeing and printing with reactive dyes. Beforehand, the textile material is treated with a wetting agent and a reaction product of polyethyleneimine and a bifunctional alkylating agent. This is followed by dyeing with reactive dyes in a conventional manner but without the addition of alkali to fix the dyes.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: February 21, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Sternberger, Karl-Heinz Keil, Dieter Gevert, Oscar Navarrete
  • Patent number: 4753999
    Abstract: A textile auxiliary for improving the fastness of materials dyed or printed with a dyestuff is a copolymer of a diallylammonium monomer, a vinyl amide monomer and a (meth)acrylic ester monomer.
    Type: Grant
    Filed: January 6, 1987
    Date of Patent: June 28, 1988
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Fritz Engelhardt, Klaus Sternberger, Gunter Rosch
  • Patent number: 4686243
    Abstract: A porous, bead-like copolymer which can be employed to excellent effect for the fixation of enzymes is obtained by suspension polymerization of monomeric oxiranylalkyl compounds and/or 2-aziridinylalkyl compounds, n-valent crosslinking agents, N-vinylamides, heterocyclic 5-membered ring compounds or 6-membered ring compounds, having a polymerizable olefinic group in each case, and polymerizable quaternary ammonium salts.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: August 11, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Dieter Wullbrandt, Reinhold Keller, Friedrich Engelhardt
  • Patent number: 4608277
    Abstract: Encapsulated salts of organic or inorganic acid particles having sparing solubility in water wherein the salt particles are surrounded by a pressure-resistant, elastic, abrasion-resistant polyurethane/polyurea casing, the ratio by weight of salt to the polyurethane component of the casing material being 1:0.2 to 1:2.5, are produced by emulsifying a mixture of 83 to 28% by weight of the salt to be encapsulated and 17 to 72% by weight of a polyurethane prepolymer containing free isocyanate groups in water in the presence of a protective colloid and reacting the emulsified prepolymer with the equivalent amount of polyamine at temperatures from 0.degree. to 80.degree. C., with vigorous mixing.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: August 26, 1986
    Assignee: Casella Aktiengesellschaft
    Inventors: Ulrich Greiner, Karl-Heinz Keil, Rudolf Heinrich, Konrad Albrecht
  • Patent number: 4588413
    Abstract: Improvements in the fastness properties of substrates dyed with reactive dyestuffs are achieved by a dyeing after-treatment with an agent which is the reaction product polyethyleneimine and a bifunctional alkylating agent.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: May 13, 1986
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Fritz Engelhardt, Ulrich Greiner, Klaus Sternberger, Manfred Pelster
  • Patent number: 4576973
    Abstract: The crosslinked, porous copolymer in the form of beads and containing 50 to 99.9% by weight of recurring units of a heterocyclic 5-membered ring compound which contains a polymerizable olefinic group and which has at least one protonizable nitrogen atom in the ring, 0.1 to 50% by weight of units of a crosslinking agent, 0 to 25% by weight of units of a polymerizable organoboron or organosilicon compound and, relative to 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinylamide of the general formula I CH.sub.2 .dbd.CH--N(R.sup.1)--C(R.sup.2).dbd.O wherein R.sup.1 denotes hydrogen, methyl or ethyl and R.sup.2 denotes hydrogen or C.sub.1 -C.sub.3 -alkyl, or several such N-vinylamides and 0 to 40% by weight of units of another polymerizable compound or several such compounds, is prepared by inverted suspension polymerization and is used, for example, as a sorbent for acid substances from solutions thereof, preferably aqueous solutions.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: March 18, 1986
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Fritz Engelhardt, Ulrich Greiner, Klaus Kuhlein, Reinhold Keller, Merten Schlingmann, Gerhard Hess
  • Patent number: 4552905
    Abstract: The crosslinked copolymer containing 75 to 99.9% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerizable olefinic group, 0.1 to 25% by weight of units of a crosslinking agent and 0 to 25% by a weight of units of a polymerizable organosilicon and/or organoboron compound and, based on 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinyl-amide, is prepared by bead polymerization and used as a sorbent for acid substances from their aqueous solutions.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: November 12, 1985
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Ulrich Greiner, Fritz Engelhardt, Klaus Kuhlein, Reinhold Keller, Merten Schlingmann
  • Patent number: 4547429
    Abstract: Encapsulated salts of organic or inorganic acid particles having sparing solubility in water wherein the salt particles are surrounded by a pressure-resistant, elastic, abrasion-resistant polyurethane/polyurea casing, the ratio by weight of salt to the polyurethane component of the casing material being 1:0.2 to 1:2.5, are produced by emulsifying a mixture of 83 to 28% by weight of the salt to be encapsulated and 17 to 72% by weight of a polyurethane prepolymer containing free isocyanate groups in water in the presence of a protective colloid and reacting the emulsified prepolymer with the equivalent amount of polyamine at temperatures from 0.degree. to 80.degree. C., with vigorous mixing.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: October 15, 1985
    Assignee: Cassella Aktiengesellschaft
    Inventors: Ulrich Greiner, Karl-Heinz Keil, Rudolf Heinrich, Konrad Albrecht