Patents by Inventor Herbert Bartl

Herbert Bartl 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).

  • Aqueous dispersions of vinylester/ethylene/ethylenically unsaturated sulfonic acid or derivative thereof copolymers
    Patent number: 3933716
    Abstract: Polymer dispersions having solids contents of from 45 to 65% by weight are continuously produced by copolymerizing a vinyl ester, ethylene and (meth)acrylamidoalkyl sulphonic acid or (meth)acryloyloxyalkyl sulphonic acid or ammonium or alkali salt thereof under an ethylene pressure of from 5 to 120 atms, at a temperature of from 0.degree. to 60.degree.C in the presence of an anionic emulsifier and with the aid of a free radical forming agent.The polymer dispersions are suitable as pigment binders.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: January 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Kuhlmann, Herbert Bartl