Patents by Inventor Karl-Clemens Peters

Karl-Clemens Peters 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: 4879361
    Abstract: Polymers in bead form are prepared from water-soluble ethylenically unsaturated monomers by a reverse suspension polymerization of a liquid in the presence of polymerization initiators and protective colloids obtainable by grafting polymers (A) containing (a) aromatic monovinyl monome from 40 to 100% by weight (b) C.sub.3-6 monoethylenically unsaturated carboxylic acid and/or maleic anhydride from 0 to 60% by weight (c) other monoethylenically unsaturated monomers from 0-20% by weight, as copolymerized units with the proviso that the sum of the weight (a) to (c) is always 100 and the polymer (A) has a molecular weight (number average) from 500 to 20,000 and a hydrogenation iodine number from 1.3 to 51 with a fixed monomer mixture at given concentration levels.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: November 7, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerd Rehmer, Manfred Niessner, Wilfried Heide, Heinrich Hartmann, Karl-Clemens Peters
  • Patent number: 4731402
    Abstract: Floor covering adhesives substantially comprisingA. a dispersion of a copolymer of20-60% by weight of vinylidene chloride34-80% by weight of a mixture of 40-80 parts by weight of esters of acrylic acid with C.sub.1 -C.sub.18 -alkanols and 20-60 parts by weight of vinyl esters and0.5 to 6% by weight of .alpha.,62 -monoolefinically unsaturated C.sub.3 -C.sub.5 -mono- and/or dicarboxylic acids and/or amides thereof and/or vinyl sulfonate,B. 30-150 parts by weight (solid), based on 100 parts of a copolymer of A, of tackifying resins from the group of the rosins and derivatives thereof,C. 0-50 parts by weight, based on 100 parts of resin B, of plasticizers and/or liquid resins and also, if desired,D. fillers,are shampoo-resistant and have a high peel strength.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: March 15, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Erich Penzel, Lothar Maempel, Hans J. Neumann, Karl-Clemens Peters, Oral Aydin
  • Patent number: 4395535
    Abstract: A process for the manufacture of condensation products of phenols and isobutyraldehyde by reacting the phenols and isobutyraldehyde at elevated temperature in a mole ratio of 0.5:1 to 1.5:1 in the presence of acid or compounds hydrolyzable to acids as catalysts, subsequent neutralization and removal of the resultant reaction water by distillation wherein the reaction products obtained in this manner are also subjected to a water-vapor distillation.
    Type: Grant
    Filed: October 6, 1981
    Date of Patent: July 26, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Nieberle, Karl-Clemens Peters, Wolfgang Reuther, Heinz-Hilmar Bankowsky
  • Patent number: 4393207
    Abstract: Alkoxyalkylaminotriazine trans-etherification products are obtained by reacting an alkoxyalkylaminotriazine of the general formula ##STR1## where X is hydrogen, alkyl, phenyl, alkylphenyl or ##STR2## A and B are hydrogen, alkyl, alkenyl or ##STR3## and R and R' are hydrogen or alkyl, with from 0.1 to 6 moles, per mole of alkoxyalkylaminotriazine, of a .beta.-hydroxyaldehyde of the general formula ##STR4## where R", R"' and R"" are identical or different and each is hydrogen or alkyl or R"' and R"" together with the .alpha.-carbon atom form a cyclopentane or cyclohexane ring, and R"' and/or R"" can also be hydroxyalkyl and R"" can also be phenyl, in the presence of an acidic catalyst, and removing the alcohol resulting from the trans-etherification. The alkoxyalkylaminotriazine trans-etherification products may be used in baking finishes and acid-hardening surface coatings.
    Type: Grant
    Filed: July 1, 1981
    Date of Patent: July 12, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Hummerich, Wolfram Weiss, Franz Merger, Guenther Immel, Hans-Joachim Kraus, Karl-Clemens Peters
  • Patent number: 4387212
    Abstract: A process for the preparation of etherified or non-etherified aminoplast resins, wherein an aminotriazine of the general formula (I) ##STR1## where X is hydrogen, alkyl, phenyl, alkylphenyl or --NH.sub.2, is reacted with a .beta.-hydroxyaldehyde of the general formula (II) ##STR2## where R', R" and R'" are identical or different and each is hydrogen or alkyl, or R" and R'", together with the .alpha.-carbon atom, are a cyclopentane or cyclohexane ring, and R" and/or R'" can be hydroxyalkyl and R" can be phenyl, the reaction being carried out in the presence of not less than one alcohol and an acid catalyst for the preparation of etherified aminoplast resins and in the presence or absence of an acid catalyst for the preparation of non-etherified aminoplast resins. The aminoplast resins prepared according to the invention can be used as surface-coatings raw materials.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: June 7, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Hummerich, Herbert Hahn, Wolfram Weiss, Guenther Immel, Hans-Joachim Krause, Karl-Clemens Peters