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.:

US 3947432 B1

Date of Patent:

Mar. 30, 1976

Filed:

Jun. 10, 1974

Process for the preparation of novel high chlorinated butyl rubber and

Applicant:

Inventors:

Shozo Tsuchiya, Kawasaki, JA;

Yoshikazu Murai, Tamagawa, JA;

Saburo Matubara, Yokohama, JA;

Assignee:

Nippon Oil Company, Tokyo, JA;

Attorney:

Sherman & Shalloway

Primary Examiner:

William F Hamrock

Int. Cl.

CPC ...

C08d / ;

U.S. Cl.

CPC ...

260 / ; 260 / ; 260 / ; 260 / ; 260 / ;

Abstract

A process for preparation of a highly chlorinated isobutylene-multiolefin copolymer, such as butyl rubber, containing more than one but not exceeding two chlorine atoms per double bond of the copolymer by chlorinating such copolymer in the presence of an aliphatic diamine derivative, such as ethylene diamine, propylene diamine, piperazine, triethylene diamine or bis-N,N-ethylene-ethylene diamine. A vulcanizable composition containing such chlorinated copolymer has has improved rate of vulcanization, covulcanizability with highly unsaturated rubber and adhesiveness.

Find Patent Forward Citations