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:
Jul. 28, 1992
Filed:
Jul. 09, 1990
Applicant:
Inventors:
James E Harris, Evans, GA (US);
Gary T Brooks, Naperville, IL (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525436 ; 525420 ;
Abstract
A method for the preparation of miscible blends comprising biphenyl-containing poly(aryl sulfones) and polyimides is disclosed. The process comprises adding the monomeric polycarboxylic acid and aromatic diamine components of the polyimide to a suitable polyaryl sulfone in a vented extruder and melt-processing the resulting mixture, thereby polymerizing the monomers to form the polyimide component of the blend.