Patents by Inventor Eric W. Walles

Eric W. Walles 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).

  • Method for preparing reactive triazine-capped aromatic polymers, and intermediates for use therein
    Patent number: 5264496
    Abstract: Hydroxy group-containing polymers, particularly polyphenylene ethers, are capped by reaction with a chlorotriazine in the presence of a substantially inert organic liquid such as toluene, water, a phase transfer catalyst and a tertiary amine from a specific class, preferably a trialkylamine such as triethylamine or dimethyl-n-butylamine. The reaction proceeds rapidly and in good yield.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: November 23, 1993
    Assignee: General Electric Company
    Inventors: Sterling B. Brown, Eric W. Walles