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:
Apr. 28, 1992
Filed:
Dec. 12, 1990
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528378 ; 528380 ; 528403 ; 528412 ; 528416 ; 528423 ;
Abstract
A process for producing aromatic polymers which comprise subjecting halogenated aromatic compounds or combinations of aromatic compounds and polyhalogenated aromatic compounds to dehydrohalogenation reaction in the presence of a metal halide for condensation. The halogenated aromatic compounds, aromatic compounds and polyhalogenated aromatic compounds include not only those compounds having benzene nucleus or nuclei, but also compounds of aromatic character such as heterocyclic five-membered compounds. A high degree of polymerization is attained according to the process.