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:
Oct. 19, 1993
Filed:
May. 24, 1991
Applicant:
Inventors:
Koji Yamamoto, Ichihara, JP;
Kazutoshi Ishikawa, Ichihara, JP;
Hideki Imabayashi, Ichihara, JP;
Takashi Izumi, Ichihara, JP;
Assignee:
Idemitsu Petrochemichal Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 65 ; 526 88 ; 526346 ; 526347 ; 5263471 ; 5263472 ;
Abstract
Disclosed is a process for producing a styrene-based polymer having syndiotactic configuration, which comprises continuously polymerizing styrene or styrene-based derivatives in a self-cleaning type reactor, while providing a sufficient shearing force to maintain a polydispersive state at a temperature of not more than 120.degree. C. According to the present invention, a styrene-based polymer having syndiotactic configuration can be produced efficiently and continuously, without adhesion of the polymer to the reactor and agitation blades.