Patents by Inventor Johannes Luttenberger

Johannes Luttenberger 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).

  • Methods for preparing and using a water dilutable copolymer and aqueous coating composition prepared therewith
    Patent number: 5136000
    Abstract: A copolymer containing a hydroxy and a carboxyl moiety and is dilutable with water after neutralization with an organic base, which copolymer is from an alkyl ester and/or hydroxyalkyl ester of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid in which the alkyl moiety is interrupted by one or more oxygen atoms and the alkyl moiety of the hydroxyalkyl ester can contain one or more hydroxyl groups, an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and an optionally copolymerizable vinyl monomer, and has an acid number of from about 20 to about 50, and an OH number of from about 40 to about 90, and contains incorporated by polymerization from about 0.5 to about 5% wt. based on the monomers used for its preparation of one or more perfluoroalkyl ethyl ester of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid containing a C.sub.6-18 alkyl moiety.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: August 4, 1992
    Assignee: Herberts GmbH
    Inventors: Johannes Luttenberger, Herbert Zima, Werner Wilfinger, Ingo Kriessmann, Hermann Schaffer