Patents by Inventor Jürgen Tropsch

Jürgen Tropsch 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: 6458348
    Abstract: The use of polymers comprising as essential structural elements units of the formula I and/or II in which R1 is H, alkyl, cycloalkyl, aryl or aralkyl, R2 and R3 independently of one another are defined as for R1 or are selected from substituted alkyl, substituted cycloalkyl, substituted aryl or substituted aralkyl, the substituents being selected from OH, O-alkyl, O-aryl, SH, S-alkyl, S-aryl, NH2, NH-alkyl, NH-aryl, N(alkyl)2, in protonated form if desired, N(alkyl)3+Z31 , where Z is the radical of an organic or inorganic acid, COOH, COO-alkyl, CONH2, CONH-alkyl, CON(alkyl)2, CN and SO3H; and the indices x in each case independently of one another are an integer from 1 to 20, and their corresponding acid addition salts as biocides.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: October 1, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Jürgen Tropsch, Dieter Zeller, Anton Negele, Norbert Mahr, Jürgen Decker
  • Patent number: 6245410
    Abstract: Absorber elements are described of at least one composite material having absorbent elements on a support, in which a plurality of elements of a superabsorbent foam are arranged on at least one support in a grid pattern at distances such that the elements in the swollen state touch at their peripheries.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: June 12, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Hähnle, Manfred Walter, Jürgen Tropsch, Jens Kremeskötter, Gunnar Schornick, Thomas Anstock
  • Patent number: 6214885
    Abstract: The use of polymers containing &bgr;-hydroxyalkylvinylamine units, as obtainable by reacting polymers containing vinylamine units with epoxides of the formula in which R is C2-C28 alkyl, phenyl, C1-C18 alkylphenyl or C2-C18 alkenyl, as biocides.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: April 10, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Jürgen Tropsch, Dieter Zeller, Anton Negele, Norbert Mahr, Jürgen Decker
  • Patent number: 5846924
    Abstract: There are described the use of copolymers obtainable by free-radically initiated copolymerization of monomer mixtures comprising (a) 60-99% by weight of 1-vinylpyrrolidone, 1-vinyl-imidazole or mixtures thereof, (b) 1-40% by weight of nitrogen-containing, basic ethylenically unsaturated monomers in the form of the free bases, in the form of salts or in quaternized form, and optionally (c) up to 20% by weight of other monoethylenically unsaturated monomers, as detergent additives for inhibiting dye transfer during the wash, detergents which contain such polymers, and polymers which are obtainable by free-radically initiated polymerization of (a) 1-vinylpyrrolidone, 1-vinylimidazole, 1-vinylimidazolium compounds, or mixtures thereof, and optionally (b) other nitrogen-containing, basic ethylenically unsaturated monomers in the form of the free bases, in the form of the salts or in quaternized form, and/or (c) other monoethylenically unsaturated monomers, in an aqueous medium in the presence of water-soluble prot
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: December 8, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Detering, Christian Schade, Wolfgang Trieselt, Juergen Tropsch
  • Patent number: 5627151
    Abstract: There are described the use of copolymers obtainable by free-radically initiated copolymerization of monomer mixtures comprising(a) 60-99% by weight of 1-vinylpyrrolidone, 1-vinylimidazole or mixtures thereof,(b) 1-40% by weight of nitrogen-containing, basic ethylenically unsaturated monomers in the form of the free bases, in the form of salts or in quaternized form, and optionally(c) up to 20% by weight of other monoethylenically unsaturated monomers,as detergent additives for inhibiting dye transfer during the wash, detergents which contain such polymers, and polymers which are obtainable by free-radically initiated polymerization of(a) 1-vinylpyrrolidone, 1-vinylimidazole, 1-vinylimidazolium compounds, or mixtures thereof, and optionally(b) other nitrogen-containing, basic ethylenically unsaturated monomers in the form of the free bases, in the form of the salts or in quaternized form, and/or(c) other monoethylenically unsaturated monomers,in an aqueous medium in the presence of water-soluble proteins and
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: May 6, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Detering, Christian Schade, Wolfgang Trieselt, Juergen Tropsch