Patents by Inventor Joseph Pedain

Joseph Pedain 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: 4895883
    Abstract: The present invention is directed to polyurethane ureas which may be obtained by the reaction of a hydrophilic NCO prepolymer, which has been prepared from a polyhydroxy component based on about 9 to 100% by weight of a polyether containing about 30 to 100% by weight of ethylene oxide, or a mixture of this hydrophilic NCO prepolymer and a hydrophobic NCO prepolymer, the mixture containing .gtoreq.30% by weight of the hydrophilic prepolymer, with an aldimine or ketimine-containing hardener mixture in the presence of water and organic solvents, approximately 30 to 70% of the NCO groups of the prepolymers being reacted with the amino groups of the hardener and the remainder reacting with water.The present invention is also directed to a process for the preparation of these polyurethane ureas and to coated substrates prepared from these polyurethane ureas.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: January 23, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joseph Pedain, Karl H. Pisaric, Walter Schroer, Wilhelm Thoma, Harro Traubel, Karl-Arnold Weber