Elastoplastic compositions of cured diene rubber and polypropylene, and a process for their preparation
申请人:MONSANTO COMPANY
公开号:EP0025355A1
公开(公告)日:1981-03-18
In thermoplastic elastomeric compositions comprising blends of crystalline polypropylene and rubber selected from natural or synthetic polyisoprene rubber, polybutadiene rubber and styrene-butadiene rubbers, in which the rubber is present as a dispersion of small particles, the rubber is cured with a phenolic curative, a urethane curative or a sulfur-donor curative to give a blend such that the product of its true stress at break (TSB) times its elastic recovery (R) is at least 70 megapascals.
在由结晶聚丙烯和选自天然或合成聚异戊二烯橡胶、聚丁二烯橡胶和丁苯橡胶的橡胶混合物组成的热塑性弹性体组合物中,橡胶以小颗粒分散体的形式存在,橡胶用酚醛固化剂、聚氨酯固化剂或硫代固化剂固化,使混合物的真实断裂应力(TSB)乘以弹性回复率(R)的乘积至少为 70 兆帕。