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41.发明授权Rubber softener comprising reaction products of liquid copolymers of conjugated dienes with copolymerizable heterocyclic nitrogen bases 失效橡胶软化剂包括共轭二烯与可共聚杂环氮基的液体共聚物的反应产物
公开(公告)号：US2779747A
公开(公告)日：1957-01-29
申请号：US30283352
申请日：1952-08-05
Applicant: PHILLIPS PETROLEUM CO
Inventor： PRITCHARD JAMES E
IPC: C08L9/02
CPC classification number: C08L9/02 , C08L9/00 , Y10S524/925 , C08L2666/08
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