Patents by Inventor Heinz G. Poll

Heinz G. Poll 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).

  • Block copolymers based on polyphenylene ethers and polycondensates, and process for producing them
    Patent number: 5128422
    Abstract: Block copolymers based on polyphenylene ethers and polycondensates obtained by a process that comprises of the following steps:a polyphenylene ether with a functional end group is prepared by oxidative coupling of a mixture of 90.0 to 99.8 mole % of a substituted phenol and 10.0 to 0.2 mole % of a functionalized phenol;a polycondensation of suitable monomers is then carried out in the presence of this functionalized polyphenylene ether,are disclosed.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: July 7, 1992
    Assignee: Huels Aktiengesellschaft
    Inventors: Udo Kowalczik, Martin Bartmann, Heinz G. Poll