Polypropylene resin composition and injection-molded article...

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

2008-05-06

2008-05-06

Mulcahy, Peter D. (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...

Reexamination Certificate

active

07368498

ABSTRACT:
Disclosed is a polypropylene-based resin composition including:from 60 to 94.9% by weight of propylene-ethylene block copolymer (A) which has a propylene homopolymer portion (A1) in a content of from 60 to 75% by weight and a propylene-ethylene random copolymer portion (A2) in a content of from 25 to 40% by weight or a mixture of the propylene-ethylene block copolymer (A) and 20% by weight or less of propylene homopolymer,from 0.1 to 15% by weight of resin (B) which has a melt tension of 0.03 N or more, a swelling ratio of 1.5 or more and a relaxation time of 5 seconds or more; andfrom 5 to 25% by weight of inorganic filler (C).

REFERENCES:
patent: 2002/0004546 (2002-01-01), Ohkawa et al.
patent: 2003/0100664 (2003-05-01), Okawa et al.
patent: 0 669 372 (1995-02-01), None
patent: 8-59953 (1996-03-01), None
patent: 2002-012718 (2002-01-01), None
patent: 2003-128855 (2003-05-01), None

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