Polypropylene resin composition

Details Polypropylene resin composition Polypropylene resin composition

2006-01-12

2008-10-21

Teskin, Fred M (Department: 1796)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S451000, C525S089000

Reexamination Certificate

active

07439296

ABSTRACT:
Disclosed is a polypropylene resin composition including from 50 to 93% by weight of polypropylene resin including propylene-ethylene block copolymer satisfying given requirements, from 1 to 25% by weight of ethylene-α-olefin copolymer rubber made up of ethylene units and units of C4-12α-olefin having a density of 0.850 to 0.870 g/cm3and an MFR of 0.05 to 1 g/10 min, from 1 to 25% by weight of another type of ethylene-α-olefin copolymer rubber made up of ethylene units and units of C4-12α-olefin having a density of 0.850 to 0.870 g/cm2 and an MFR of 2 to 20 g/10 min, and from 5 to 25% by weight of inorganic filler. Molded articles made from the composition have good balance between rigidity and impact resistance and have good appearance.

REFERENCES:
patent: 5965654 (1999-10-01), Hirata et al.
patent: 6306972 (2001-10-01), Ohkawa et al.
patent: 2006/0058434 (2006-03-01), Watanabe
patent: 09-71711 (1997-03-01), None
patent: 2000-26697 (2000-01-01), None
patent: 2000-178389 (2000-06-01), None

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