Physically blended propylene polymer composition

Details Physically blended propylene polymer composition Physically blended propylene polymer composition

C - Chemistry, Metallurgy

08

L

400/4919, 400/65

C08L 23/10 (2006.01) C08L 23/16 (2006.01)

Patent

CA 1145094

ABSTRACT OF THE DISCLOSURE The invention is a physically blended propylene polymer composition composed of (A) 100 parts by weight of crystalline polypropylene containing 0 to 10 mole% of ethylene, another .alpha.-olefin, or mixtures thereof (B) 1 to 30 parts by weight of a propylene/ethylene random copolymer composed of 30 to 85 mole% of propylene, said copolymer containing 0 to 10 mole% of a diene component, and having (i) a micro-isotacticity of at least 0.8 and (ii) a boiling n-cyclohexane insolubles content of 0 to 10% by weight, and (C) 0 to 30 parts by weight of polyethylene containing 0 to 15 mole% of an .alpha.-olefin, said components (A) and (B) having been physically mixed with each other. The composition displays superior properties such as high impact strength, high rigidity, satisfactory gloss, a high degree of uniformity in the mixing and a high degree of dispersion of the ingredients in the resulting polymer composit- ion.

326141

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