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:
Dec. 03, 1985
Filed:
Dec. 03, 1984
Applicant:
Inventors:
Jan Bialy, Warsaw, PL;
Irena Penczek, Warsaw, PL;
Stanislaw Maczenski, Warsaw, PL;
Marek Borensztajn, Warsaw, PL;
Assignee:
Enichimica S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
526 68 ; 526 67 ; 526 69 ; 526 70 ; 528212 ; 528214 ; 528215 ; 528216 ; 528217 ; 528486 ;
Abstract
Process for the production of polyphenylene oxide by means of the oxidative polymerization of 2,6-xylenol, with either oxygen or a gas containing molecular oxygen, in the presence of a catalyst, by continuously operating in a circulation system, and with the precipitation of the polymer in the liquid reaction medium.