Sherman & Shalloway
Method for modifying cis-1,4-polyisoprene rubber
 A method for modifying cis-1,4-polyisoprene rubber, which comprises reacting a diisocyanate with a primary diamine in the presence of the cis-1,4-polyisoprene rubber. 
Nippon Zeon Co., Ltd.
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Nagatoshi Shizuo Toshihiro
Sugi Kitahara Fujii