Patents by Inventor Karl Peterlein

Karl Peterlein 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).

  • Copolymers containing hydroxyl groups, method of production and their application in sizing of paper
    Patent number: 4346204
    Abstract: A copolymer derived from maleic anhydride and dicyclopentadiene, containing hydroxyl groups, having the formula: ##STR1## wherein R and R' may be the same or different, selected from the group consisting of H, C.sub.1 -C.sub.14 alkyl-isobutyronitrile, phenyl which is optionally substituted by halogen, C.sub.1 -C.sub.8 alkyl-substituted phenyl, C.sub.1 -C.sub.14 alkoxy-, C.sub.1 -C.sub.14 acyloxy- or halogen-substituted benzoyl, and n=3-10. The copolymer is useful for the sizing of paper.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: August 24, 1982
    Assignee: C Hemische Werke Huls Aktiengesellschaft
    Inventors: Felix Schulde, Karl Peterlein, Klaus Diedrich
  • Anionic paper surface sizing agent
    Patent number: 4200559
    Abstract: Paper surface sizing agents based on aqueous solutions ofcopolymers of maleic acid anhydride and dicyclopentadiene, which are further reacted after preparation to produce the half amides with ammonia, or primary or secondary aliphatic amines.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: April 29, 1980
    Assignee: Chemische Werke Huls A.G.
    Inventors: Karl Peterlein, Felix Schulde, Klaus M. Diedrich, Volker W. Kulisch