| 摘要 |
Modified rubber compositions comprise, by weight, about 15-60% of a highly saturated aliphatic rubber, such as ethylene-propylene-diene rubber, about 25-80% of preferably non-nitrogenous acrylate monomer units; and less than about 5% multi-functional monomer units. The compositions exist as amorphous heterogeneously dispersed phases. The first phase comprises the copolymer rubber, to which polymers of at least 10%, preferably 20%, and more preferably 30% of the other monomer units are grafted. The second phase comprises the other monomers polymerized as homo and copolymers, not grafted to the rubber. The modified rubber composition, preferably non-nitrogenous polyacrylate polymer, and another polymer are mixed together to form a polymer blend having higher impact strength and other important properties.
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