C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/16 (2006.01) C08J 5/18 (2006.01) C08L 23/10 (2006.01) C08L 23/14 (2006.01) C08L 23/18 (2006.01)
Patent
CA 2080937
A propylene copolymer composition enabling the production of a film having excellent low-temperature heat sealing ability and blocking resistance, is obtained by blending 1 to 70 wto of a component A and 30 to 99 wt% of a component B. The component A comprises either a propylene homopolymer or a copolymer of propylene with not more than 10 mol % of ethylene or an a-olefin having a carban number of 4 to 20, and has a molecular weight distribution (Mw/Mn) of not more than 3, a mean elution temperature of 40 to 100°C , and an elution dispersion degree (a value) of not more than 10. The component B comprises a copolymer of propylene with ethylene and/or an .alpha. - olefin having a carbon number of 4 to 20, and has a molecular weight distribution (Mw/Mn) of 3.5 to 10.
Fujita Takashi
Mizuno Hajime
Sugano Toshihiko
Uchino Hideshi
Marks & Clerk
Mitsubishi Chemical Corporation
Mitsubishi Petrochemical Co. Ltd.
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