The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1977
Filed:
Jan. 21, 1976
Applicant:
Inventors:
Daniel Edwin Floryan, Glenmont, NY (US);
Paul Caswell Fruscione, Albany, NY (US);
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ;
Abstract
A novel process is disclosed for the preparation of a polyphenylene oxide resin wherein the copper catalyst is extracted by the use of a salt of ethylenediaminetetraacetic acid and a quaternary ammonium salt. The process results in a decrease of the residual copper which is carried over into the polyphenylene oxide resin.