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. 11, 1976
Filed:
Sep. 03, 1974
Applicant:
Inventors:
Klaus J Dahl, Palo Alto, CA (US);
Viktors Jansons, Los Gatos, CA (US);
Assignee:
Raychem Corporation, Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 49 ; 260 50 ; 260 61 ; 260 79 ;
Abstract
Melt-stable aromatic polyketones useful in, eg, electrical insulation and comprised of, eg, the recurring unit ##SPC1## Wherein m, n and x are 0 or 1 (n being 0 when x is 1) are prepared by HF/BF.sub.3 -catalyzed polymerization at 0.degree.C of appropriately chosen nucleophilic and electrophilic coreactants, preferably terephthaloyl chloride and 1,4 -diphenoxybenzene (m=1, x and n=0).