Polypropylene-based resin composition and injection molded...

Details Polypropylene-based resin composition and injection molded... Polypropylene-based resin composition and injection molded...

2005-03-22

2005-03-22

Cheung, William (Department: 1713)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S451000, C524S502000, C524S515000, C524S528000, C524S714000

Reexamination Certificate

active

06869993

ABSTRACT:
Disclosed are a polypropylene-based resin composition comprising (i) a resin composition comprising specific amounts of a propylene-ethylene block copolymer (A-1), a copolymer rubber of ethylene and α-olefin having from 3 to 20 carbon atoms (B), the copolymer rubber having a density of from 0.85 to 0.885 g/cm3, an inorganic filler (C), and optionally a propylene homopolymer (A-2), and (ii) a small amount of an fatty acid amide (D). The resin composition is excellent in balance between rigidity and impact resistance and in scratch resistance.

REFERENCES:
patent: 5585420 (1996-12-01), Grasmeder et al.
patent: 6576693 (2003-06-01), Ogita et al.
patent: 20030176555 (2003-09-01), Watanabe et al.
patent: 8-506373 (1996-07-01), None
patent: 10-36578 (1998-02-01), None

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