发明授权
US4668753A Film-forming propylene copolymer, film thereof and process for production of the film 失效
成膜丙烯共聚物,其膜及其制造方法

Film-forming propylene copolymer, film thereof and process for
production of the film
摘要:
A film-forming propylene copolymer composed of a major amount of propylene and a minor amount of ethylene, characterized by having(A) an ethylene content (Ec) of from 0.1 mole % to 2.0 mole % based on the total amount of propylene and ethylene, and(B) an isotactic value (Iso) in the range represented by the following formula (1) or (2),(i) when 0.1.ltoreq.Ec.ltoreq.0.3,Iso.gtoreq.-5Ec30 96.3 (%) (1),and(ii) when 0.3
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