Patents by Inventor Ernst Schwinum

Ernst Schwinum 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 emulsion
    Patent number: 4407724
    Abstract: Straight chain alkylsulphonic acid ethanol- and isopropanol amides are used as biodegradable non-ionogenic emulsifiers for producing an emulsion.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: October 4, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Perrey, Martin Matner, Ernst Schwinum, Hans Rudolph
  • Dipped articles of rubber
    Patent number: 4102844
    Abstract: A method for the production of dipped articles of rubber latices, wherein rubber latices are used which have an average rubber-particle diameter of no more than 200 nm and contain a rubber having a Defo value of less than 2000, the rubber latices having been prepared by the polymerization of a monomer mixture of 85 to 50 parts by weight of butadiene and/or isoprene, 10 to 40 parts by weight of acrylonitrile or methacrylonitrile, 0 to 40 parts by weight of styrene, 0 to 10 parts by weight of acrylamide, methacrylamide and/or their methylol derivatives and 0.1 to 10 parts by weight of an .alpha.-.beta.-unsaturated carboxylic acid, in aqueous emulsion in the presence of 0.5 to 6.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: July 25, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Schwinum, Heinz Hornig, Martin Matner
  • Stable heat-sensitive latex mixtures
    Patent number: 4001162
    Abstract: Heat-sensitized polymer latex mixtures, wherein they contain from 0.05 to 10% by weight, based on polymer, of a heat-sensitizer and, as stabilizer, from 0.1 to 10% by weight, based on polymer, of a sulphonamide corresponding to the general formula ##STR1## IN WHICH R represents alkyl, chloroalkyl or cycloalkyl with 8 to 30 carbon atoms or alkaryl with 10 to 30 carbon atoms,R.sub.1 and R.sub.2 independently of one another represent hydrogen, chloromethyl, methyl, ethyl, phenyl;m is an integer from 0 to 50 andR.sub.3 represents hydrogen, alkyl, alkaryl, aryl or --(CHR.sub.1 --CHR.sub.2 --O).sub.m H with the above meanings for R.sub.1, R.sub.2 and m.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: January 4, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Matner, Hermann Perrey, Ernst Schwinum
  • Styrene-butadiene copolymer latices containing carboxyl groups
    Patent number: 4001163
    Abstract: Low-foam carboxylated styrene-butadiene-latices obtained by the emulsion polymerization of monomer mixtures of:73.5 to 18.5 parts by weight of butadiene;20 to 80 parts by weight of styrene;0 to 10 parts by weight of acrylonitrile;0 to 5 parts by weight of ethylenically unsaturated carboxylic acid amides or methylol derivatives thereof; and1.5 to 10 parts by weight of ethylenically unsaturated carboxylic acids;Wherein the ethylenically unsaturated carboxylic acids consist of a mixture of:1.0 to 4 parts by weight of acrylic acid and0.5 to 6 parts by weight of methacrylic acidAnd wherein less than 0.5 parts by weight of anionic emulsifiers are used for polymerisation. The latices can be used inter alia as an impregnating material for soft non-wovens, cardboards and fiber fleece carpets.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: January 4, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Matner, Ernst Schwinum, Ludwig Mott