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:
Nov. 02, 1976
Filed:
Jan. 09, 1975
Applicant:
Inventors:
Kohei Nakaguchi, Osaka, JA;
Shohachi Kawasumi, Kobe, JA;
Masaaki Hirooka, Ibaraki, JA;
Hiroshi Yabuuchi, Takatsuki, JA;
Hiroyoshi Takao, Ashiya, JA;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526188 ; 260 / ; 260 / ; 526184 ; 526185 ; 526183 ; 526187 ; 526190 ; 526196 ; 526197 ; 526291 ; 526303 ; 526329 ; 526342 ; 526343 ; 526347 ; 526350 ;
Abstract
An alternating copolymer of an olefinic unsaturated compound and a conjugated vinyl compound is produced by contacting said monomers with at least one organoboron halide or/and a mixture of at least one organo-compound of metal from Groups IIb, IIIb and IVb of the Mendeleev Periodic Table and at least one halogeno-compound of metal from Groups IIIb and IVb of the Mendeleev Periodic Table. A typical catalyst is ethylboron dichloride or a combination of triethylaluminum and tin tetrachloride.