Patents by Inventor Edward G. Brugel

Edward G. Brugel 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).

  • Crosslinking polymers with compounds containing xanthene groups
    Patent number: 5175218
    Abstract: This invention relates to a process for cross-linking polymers that are crosslinkable by free radicals and/or contain aromatic rings by heating these polymers with a compound containing xanthene groups. The crosslinked polymers have improved chemical resistance.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: December 29, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward G. Brugel, Israel A. David, Frank P. Gay
  • Process for extracting metal residue from poly(ether ketone ketones)
    Patent number: 5017685
    Abstract: Metal residues are extracted from poly(ether ketone ketones) with aliphatic alpha-hydroxycarboxylic acids or aromatic ortho-hydroxycarboxylic acids in a liquid phase, either neat or in an aqueous or a nonaqueous solution. Extraction of metal residues, which usually derive from the catalysts used in the preparation of poly(ether ketone ketones), improves both the color and the thermal stability of these polymers.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: May 21, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward G. Brugel
  • Stabilization of poly(ether ketone ketones)
    Patent number: 4987171
    Abstract: Poly(ether ketone ketones), which are important engineering resins, are thermally stabilized by being contacted for at least 15 minutes above their glass transition temperature with an organic hydroperoxide containing at least 0.1 mg of active oxygen per gram, having a boiling point above about 130.degree. C., and degradable between 130.degree. C. and the contacting temperature, the hydroperoxide being made from a precursor comprising at least one benzylic or allylic hydrogen in its molecule.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: January 22, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward G. Brugel
  • Branched copolyetherketones
    Patent number: 4720537
    Abstract: Novel branched copolyetherketones comprising condensation products of diphenyl ether, aromatic acid halides and trifunctional comonomers are disclosed.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: January 19, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward G. Brugel
  • Copolyetherketones
    Patent number: 4704448
    Abstract: Novel copolyetherketones derived from diphenyl ether and aromatic diacids or diacid halides are disclosed where the diphenyl ether is present in a molar excess relative to the diacid or diacid halide chlorides of about 2 to 8%.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: November 3, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward G. Brugel
  • Extrudable self-supporting hot melt adhesive sheet
    Patent number: 4434261
    Abstract: Extrudable, self-supporting, nonblocking hot melt adhesive sheet is obtained by blending about 10-50% by weight of an ethylene interpolymer, such as ethylene/vinyl ester, ethylene/unsaturated mono- or dicarboxylic acids or esters of said unsaturated acids, etc.; 2-30% by weight of a plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers, polyether esters and combinations thereof; about 20-80% by weight of filler; from 0 to about 10% by weight of at least one additive, such as organic acids, organic acid derivatives and surface active agents.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: February 28, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward G. Brugel, Walter Yllo