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. 16, 1985
Filed:
Nov. 08, 1983
Applicant:
Inventors:
Masahiro Asami, Himeji, JP;
Kiyoshi Okitsu, Otake, JP;
Yoshiaki Okumura, Himeji, JP;
Hajime Namikoshi, Himeji, JP;
Masatoshi Mikumo, Kobe, JP;
Shoji Watanabe, Otake, JP;
Assignee:
Daicel Chemical Industries, Ltd., Sakai, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08G / ;
U.S. Cl.
CPC ...
527300 ; 536 63 ; 106176 ;
Abstract
A process for preparing a graft polymer by subjecting a cyclic ester to ring-opening polymerization in the presence of a cellulose derivative in the presence of a ring-opening polymerization catalyst for the cyclic ester. The resulting graft polymer has high transparency, good film-formability and high solubility and can be suitably used as a novel polymer material.