Polypropylene film

Details Polypropylene film Polypropylene film

C - Chemistry, Metallurgy

08

L

C08L 23/10 (2006.01) C08F 10/06 (2006.01) C08J 5/18 (2006.01) C08F 210/06 (2006.01)

Patent

CA 2168079

A film having the low dependency of film transparency on film-forming conditions and thickness, and having superior transparency and rigidity without compromising the original properties of polypropylene film. The film is produced from a polypropylene prepared from a propylene polymer having: (1) a stereoirregularity index mmrr/mmmm of a xylene-insoluble fraction at 20°C within the range of 0.0095 to 0.0200, (2) a melting temperature within the range of 145 to 160°C, (3) a xylene-soluble fraction at 20°C of 3.5 % by weight or less, the polypropylene having: (4) a melt-flow rate at 230°C within the range of 5 to 15g/10min., and (6) a swelling ratio within the range of 1.20 to 1.35.

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