Patents by Inventor Ingeborg Schermann

Ingeborg Schermann 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).

  • Crosslinked copolymers with crosslinkable groups based on acrylic or methacrylic acid, preparation thereof and use thereof
    Patent number: 5219969
    Abstract: Abstract of the Disclosure: Crosslinked acrylic or methacrylic acid copolymers with crosslinkable groups that are useful as thickeners for textile print pastes are obtainable by copolymerization of(a) from 50 to 99 parts by weight of acrylic acid and/or methacrylic acid,(b) from 1 to 50 parts by weight of at least one N-methylol (meth)acrylamide or derivatives thereof,(c) from 50 to 10,000 ppm, based on the monomers (a) and (b), of an at least bifunctional crosslinker, and(d) from 0 to 49 parts by weight of other monoethylenically unsaturated monomersin the presence of a free radical polymerization initiator in the aqueous phase of a water-in-oil emulsion.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: June 15, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Uhl, Norbert Grund, Reinhard Schneider, Ingeborg Schermann, Manfred Niessner, Heinrich Hartmann