Patents by Inventor Wilfried Huster

Wilfried Huster 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).

  • Method of using aqueous polymer dispersions as lamination adhesives for glossy films
    Patent number: 5474638
    Abstract: The invention relates to a method of using aqueous polymer dispersions based on acrylate-methacrylate copolymers as lamination adhesives for heat sealed glossy films, where the aqueous polymer dispersions have a solids content of from 20 to 65% by weight, the copolymer has a glass transition temperature of from -35.degree. to -10.degree. C., a K value of from 40 to 100 and a mean particle size of less than 200 nm, and the copolymer is obtainable by free-radical emulsion polymerization of:a) from 50 to 80 parts by weight of one or more comonomers from the group consisting of alkyl acrylates of alcohols having 2 to 10 carbon atoms,b) from 10 to 25 parts by weight of one or more comonomers from the group consisting of alkyl methacrylates of alcohols having 1 to 10 carbon atoms, andc1) from 0 to 10 parts by weight of one or more vinyl-aromatic comonomers,c2) from 0.1 to 4.0 parts by weight of one or more .alpha.,.beta.-unsaturated, monoolefinic carboxylic acids,c3) from 0 to 4.0 parts by weight of one or more .
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: December 12, 1995
    Assignee: Wacker-Chemie GmbH
    Inventors: Klaus Kohlhammer, Wilfried Huster, Walter Dobler
  • Aqueous contact adhesive dispersions, process for their preparation, and their use
    Patent number: 5300554
    Abstract: The invention relates to aqueous contact adhesive dispersions containing, based on the total weight of the dispersion, from 40 to 70% by weight of a copolymer prepared by emulsion polymerization, where the copolymer containsa) from 40 to 70% by weight of vinyl esters of aliphatic carboxylic acids having 2 to 12 carbon atoms,b) from 10 to 40% by weight of acrylic acid esters of aliphatic alcohols having 4 to 12 carbon atoms,c) from 8 to 15% by weight of methacrylic acid esters of aliphatic alcohols having 4 to 12 carbon atoms,d) from 0.1 to 3% by weight of ethylenically unsaturated compounds which cause cross-linking,e) from 0.1 to 5% by weight of ethylenically unsaturated carboxylic acids,f) from 0.1 to 2% by weight of substituted and unsubstituted (meth)acrylamides,g) from 0.5 to 3% by weight of ethylenically unsaturated hydroxyalkyl-functional compounds, andh) from 0.5 to 3% by weight of ethylenically unsaturated sulfates and/or sulfonates.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: April 5, 1994
    Assignee: Wacker Chemie GmbH
    Inventors: Manfred Krell, Wilfried Huster, Joachim Fischer
  • Aqueous dispersions, containing aminooxy crosslinking agents, of copolymers containing carbonyl groups
    Patent number: 5278225
    Abstract: The invention relates to aqueous dispersions containing aminooxy crosslinking agents, of copolymers containing carbonyl groups, to processes for the preparation thereof and to the use thereof as a crosslinking system in binders, adhesives and coating agents.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: January 11, 1994
    Assignee: Wacker-Chemie GmbH
    Inventors: Klaus Kohlhammer, Wilfried Huster, Wolfgang Deinhammer