Patents by Inventor Thomas Krohnen

Thomas Krohnen 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).

  • Publication number: 20100120655
    Abstract: Clear liquid detergents can be produced by adding water-soluble inorganic salts, wherein the agents may comprise non-ionic surfactants, cationic polymers having a charge density of at least 5 meq/g, measured at a pH value of 8, soaps, and anionic surfactants at the same time.
    Type: Application
    Filed: December 8, 2007
    Publication date: May 13, 2010
    Applicant: COGNIS IP MANAGEMENT GMBH
    Inventors: Ditmar Kischkel, Manfred Weuthen, Thomas Krohnen
  • Patent number: 6174849
    Abstract: A water-free surfactant composition is presented having (a) a fatty alcohol sulfate corresponding to the formula R1O—SO3X where R1 is a linear alkyl chain containing 16 or 18 carbon atoms and X is an alkali metal, alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium and (b) an alcohol sulfate corresponding to the formula R2O—SO3X where R2 is an alkyl chain containing 12 to 15 carbon atoms consisting of a minimum 20 percent by weight branched alkyl chains and a maximum 80 percent by weight unbranched alkyl chains, and X is an alkali metal or alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium. The surfactant composition has a reduced potential for irritation and good flowability and solubility in cold water. The surfactant composition is useful in laundry detergents, dishwashing detergents and other cleaners.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: January 16, 2001
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl-Heinz Schmid, Ditmar Kischkel, Thomas Krohnen, Andreas Syldath
  • Patent number: 6165961
    Abstract: A water-free surfactant composition containing: (a) a fatty alcohol sulfate corresponding to the formula R.sup.1 O--SO.sub.3 X, where R.sup.1 is a linear alkyl chain, and X is an alkali metal, alkaline earth metal, ammonium, alkyl ammonium, alkanolammonium or glucammonium; and (b) an alkyl benzenesulfonate corresponding to the formula R.sup.2 --Ph--SO.sub.3 X where R.sup.2 is an alkyl chain containing 10 to 14 carbon atoms, Ph is a phenyl group and X is alkali metal, alkaline earth metal, ammonium, alkyl ammonium, alkanolammonium or glucammonium. The fatty alcohol sulfate and alkyl benzenesulfonate are present in the surfactant composition in a weight ratio of 50:50 to 90:10. The water-free surfactant composition provides a reduced potential for irritation, good flow behavior and solubility in cold water. The surfactant composition is useful in laundry detergents, dishwashing detergents and cleaners.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: December 26, 2000
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl-Heinz Schmid, Ditmar Kischkel, Thomas Krohnen, Andreas Syldath
  • Patent number: 5824633
    Abstract: Heterogenous surfactant granules consisting of an inner core containinga) alkyl sulfates corresponding to formula (I):R.sup.1 O--SO.sub.3 X (I)in which R.sup.1 is an alkyl radical containing 16 to 18 carbon atoms and X is an alkali metal or alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium, andb1) alkyl sulfates corresponding to formula (II):R.sup.2 O--SO.sub.3 X (II)in which R.sup.2 is an alkyl radical containing 12 to 14 carbon atoms and X is as defined above, orb2) alkyl ether sulfates corresponding to formula (III):R.sup.3 O(CH.sub.2 CH.sub.2).sub.n SO.sub.3 X (III)in which R.sup.3 is an alkyl radical containing 16 to 18 carbon atoms, n is a number of 1 to 3 and X is as defined above,and a coating over the inner core consisting of alkyl sulfates corresponding to formula (II), with the provisos that the ratio by weight of component a) to component b) in the inner core is 100:0 to 30:70, and the ratio by weight of the inner core to the coating is 99.5:0.5 to 90:10.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: October 20, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ditmar Kischkel, Karl Schmid, Andreas Syldath, Thomas Krohnen
  • Patent number: 5668100
    Abstract: A substantially water-free detergent mixture comprisinga) alkyl or alkenyl sulfates corresponding to formula (I):R.sub.1 OSO.sub.3 X (I)in which R.sub.1 is a linear or branched aliphatic hydrocarbon radical containing 16 to 18 carbon atoms and X is an alkali metal or alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium,b) alkyl or alkenyl sulfates corresponding to formula (II):R.sub.2 OSO.sub.3 X (II)in which R.sub.2 is a linear or branched aliphatic hydrocarbon radical containing 12 to 14 carbon atoms and X is an alkali metal or alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium, wherein components a) and b) are present in a ratio by weight of 90:10 to 70:30, andc) a hydrophobic structure breaker corresponding to formula (III):R.sub.4 O(CH.sub.2 CH.sub.2 O).sub.n H (III)in which R.sub.4 is a linear or branched alkyl or alkenyl radical containing 12 to 18 carbon atoms and n is 0 or a number of 1 to 5.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: September 16, 1997
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl Schmid, Andreas Syldath, Ditmar Kischkel, Thomas Krohnen, Michael Neuss, Hubert Pawelczyk, Monika Boecker, Hermann-Josef Welling
  • Patent number: 5501817
    Abstract: A method for stabilizing aqueous zeolite suspensions by adding fatty-alcohol poly(ethylene glycol) ethers of the formula R.sup.1 O--(CH.sub.2 CH.sub.2 O).sub.n in which R.sup.1 is a linear aliphatic alkyl group containing 12 to 14 carbon atoms and n is an average number of from 4.2 to 4.8. Aqueous slurries containing from 20 to 60% by weight of zeolite are stabilized by adding it to the slurry from 0.1 to 5% by weight of the fatty-alcohol poly(ethylene glycol) ethers.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: March 26, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ditmar Kischkel, Karl Schmid, Andreas Syldath, Thomas Krohnen