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:
Jun. 22, 1976
Filed:
Jul. 12, 1974
Applicant:
Inventors:
Assignee:
Kuraray Co., Ltd., Kurashiki, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08L / ;
U.S. Cl.
CPC ...
260 42 ; 260 / ; 260894 ; 526 14 ; 526 56 ; 526 47 ;
Abstract
A modified cis-1,4-polyisoprene rubber having enhanced green strength is produced by reacting said rubber with maleic anhydride in a solvent including an aliphatic hydrocarbon or an alicyclic hydrocarbon or an alicyclic hydrocarbon; the efficiency of the reaction of the maleic anhydride is markedly increased by employing a relatively minor amount of an aromatic hydrocarbon in combination with the aliphatic or alicyclic hydrocarbon reaction solvent.