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. 22, 1991
Filed:
Apr. 03, 1990
Applicant:
Inventors:
Tadashi Sezume, Ohi, JP;
Akira Kobayashi, Kamifukuoka, JP;
Masahide Murata, Ohi, JP;
Mayako Ogata, Kamifukuoka, JP;
Masahiro Ohsawa, Yokohama, JP;
Takashi Mikami, Komae, JP;
Assignee:
Tonen Sekiyagaku Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525263 ; 525276 ; 525288 ; 525286 ; 525285 ; 525301 ; 525293 ; 525310 ; 525312 ; 525315 ;
Abstract
A method of producing a modified polypropylene comprising the step of graft-polymerizing a propylene random copolymer containing an unconjugated diene comonomer represented by the general formula: ##STR1## wherein R.sub.1 -R.sub.4 are H or an alkyl group having 1-6 carbon atoms, and n is an integer of 1-20, with a monomer having an unsaturated bond by a radical method.