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. 10, 1994
Filed:
Sep. 14, 1992
Applicant:
Inventors:
Laurentius N Nelissen, Eindhoven, NL;
Johannes M Zijderveld, BG Breda, NL;
Assignee:
Shell Research Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
525391 ; 525392 ; 525397 ; 526 89 ; 526201 ; 526203 ;
Abstract
Process for the manufacture of modified polyphenylene ether or structurally related polymers, comprising the reaction of polyphenylene ether or structurally related polymer with a cyclic acid anhydride, in the presence of a non nucleophilic base, and in an inert polar organic solvent and preferably in a vinyl substituted aromatic monomer as solvent; modified polyphenylene ethers so obtained and use of them for the manufacture of modified high temperature rigid poly(vinyl substituted aromatic) polymer compositions.