Polypropylene composition

Details Polypropylene composition Polypropylene composition

1987-11-19

1989-10-03

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08L 5302, C08L 2312, C08L 2316, C08L 2306

Patent

active

048718050

ABSTRACT:
A polypropylene composition capable of producing molded products having superior stiffness, impact resistance, transparency, resistance to whitening on impact on bending and luster is provided, which composition has (i) a styrene-ethylene.multidot.butylene-styrene block copolymer or a styrene-ethylene.multidot.propylene block copolymer each in 5 to 30% by weight based on the weight of the composition, blended with a highly crystalline propylene homopolymer (A) having a relationship between its isotactic pentad ratio (P) and melt flow rate (MFR) represented by an expression of

REFERENCES:
patent: 3299174 (1967-01-01), Kuhre et al.
patent: 3700633 (1972-10-01), Wald et al.
patent: 3793283 (1974-02-01), Frailey et al.
patent: 4178328 (1979-12-01), Thiruvillakkat
patent: 4634735 (1987-01-01), Thiersault et al.

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