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:
Aug. 06, 1991
Filed:
Oct. 28, 1988
Applicant:
Inventors:
Masuzo Yokoyama, Yokkaichi, JP;
Shinichi Yamauchi, Yokkaichi, JP;
Hiroshi Nakano, Yokkaichi, JP;
Michiharu Kihira, Yokkaichi, JP;
Hiroshi Omori, Yokkaichi, JP;
Assignee:
Mitsubishi Petrochemical Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525250 ; 525268 ; 525270 ; 525319 ; 525320 ; 525322 ; 525324 ;
Abstract
A copolymer of an .alpha.-olefin with an aromatic diolefin such as divinylbenzene produced by means of Ziegler-Natta polymerization and having a vinylphenyl moiety is subjected to polymerization with an ethylenically unsaturated monomer by means of anion polymerization or free radical polymerization, whereby a graft-modified .alpha.-olefin copolymer is obtained.