Patents by Inventor Dieter Kuhlmann

Dieter Kuhlmann 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).

  • Process for producing diene rubbers polymerized by means of Nd catalysts and exhibiting reduced cold flow and low intrinsic odor
    Patent number: 5567784
    Abstract: The production of diene rubbers polymerized by means of Nd catalysts and having reduced cold flow and low intrinsic odor is effected by the polymerization of diolefines adiabatically at temperatures of -20.degree. to 150.degree. C. in the presence of inert organic solvents and in the presence of metallo-organic mixed catalysts based on neodymium carboxylate, by subsequently depressurizing the reaction mixture obtained in this manner by reducing the pressure, and by treating the reaction mixture thereafter with disulphur dichloride, sulphur dichloride and/or thionyl chloride.
    Type: Grant
    Filed: September 20, 1995
    Date of Patent: October 22, 1996
    Assignee: Bayer AG
    Inventors: Wolfgang Wieder, Dieter Kuhlmann, Wolfgang Nentwig
  • ABS-Moulding compositions having high notched impact strength
    Patent number: 4302378
    Abstract: ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 1% by weight (based on total moulding composition) of a perfluoroalkane acid or a derivative thereof to improve notched impact strength.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: November 24, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Karl-Heinz Ott, Bernhard Arnold, Friedrich Kowitz, Dieter Kuhlmann
  • ABS-moulding compositions having high notched impact strength
    Patent number: 4297446
    Abstract: ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 2.0% by weight (based on total mixture) of a silico urethane derivative to improve notched impact strength.
    Type: Grant
    Filed: August 24, 1979
    Date of Patent: October 27, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Karl-Heinz Ott, Bernhard Arnold, Friedrich Kowitz, Harald Oertel, Dieter Kuhlmann
  • ABS moulding compounds having improved surface
    Patent number: 4267278
    Abstract: A thermoplastic moulding composition which comprises: (A) from 99.99 to 94% by weight of an ABS composition comprising: (a) from 5 to 70% by weight of one or more rubber-based graft polymers; and (b) from 95 to 30% by weight of one or more thermoplastic resins; and (B) from 0.01 to 6.0% by weight of one or more compounds corresponding to the following general formula: ##STR1## wherein R represents hydrogen, C.sub.1 -C.sub.4 -alkyl or carboxyl; R.sup.1 represents hydrogen or methyl; and R.sup.2 represents carboxyl, and which may also contain from 0.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: May 12, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Bernhard Arnold, Dieter Kuhlmann, Friedrich Kowitz, Karl-Heinz Ott
  • ABS-Polymers of high notched impact strength
    Patent number: 4248778
    Abstract: The use of a liquid polymethyl phenyl siloxane or a liquid polydimethyl siloxane, in combination with calcium stearate, pentaerythritol tetrastearate, bis-stearylamide of ethylene diamine or mixtures thereof for improving the physical properties of ABS-polymers.
    Type: Grant
    Filed: June 19, 1979
    Date of Patent: February 3, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernhard Arnold, Friedrich Kowitz, Dieter Kuhlmann, Karl-Heinz Ott, Leo Morbitzer
  • Aqueous dispersions of vinylester/ethylene/ethylenically unsaturated sulfonic acid or derivative thereof copolymers
    Patent number: 3933716
    Abstract: Polymer dispersions having solids contents of from 45 to 65% by weight are continuously produced by copolymerizing a vinyl ester, ethylene and (meth)acrylamidoalkyl sulphonic acid or (meth)acryloyloxyalkyl sulphonic acid or ammonium or alkali salt thereof under an ethylene pressure of from 5 to 120 atms, at a temperature of from 0.degree. to 60.degree.C in the presence of an anionic emulsifier and with the aid of a free radical forming agent.The polymer dispersions are suitable as pigment binders.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: January 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Kuhlmann, Herbert Bartl