| 摘要 |
The present invention relates to a heterophasic polypropylene composition which is sterilizable and has a high impact strength as well as improved optical properties both before and after a step of heat sterilization. Furthermore, the present invention relates to a film comprising said heterophasic polypropylene composition, and to the use of said composition for the production of a film. Finally, the present invention is directed to the use of such a film as a packaging material for medicals and/or food. The heterophasic polypropylene composition comprises a matrix resin which comprises (A) a propylene homopolymer and (B) a propylene random copolymer; and a dispersed phase which comprises (C) an ethylene-propylene rubber wherein (i) the melting point of the heterophasic polypropylene composition is at least 145° C. and (ii) the content of comonomer in the matrix resin is at least 0.5 wt % based on the entire matrix resin without any additives. |
