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. 17, 1990
Filed:
Apr. 05, 1989
Applicant:
Inventors:
Takashi Komatsu, Ichihara, JP;
Eiichi Terada, Ichihara, JP;
Assignee:
Idemitsu Petrochemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528202 ; 528125 ; 528174 ; 528199 ; 528204 ;
Abstract
A process for producing polycarbonate is disclosed, comprising reacting a halogenated bisphenol-containing organic dihydroxy compound and a carbonate-forming derivative in a liquid medium in the presence of pentahalogenophenol as a molecular weight modifier. This polycarbonate is superior in flame retardance, impact resistance and fluidity, and further in transparency.