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US 4,734,450 AGranted
Polypropylene-base resin composition containing an inorganic filler and 0.01 to 0.6 wt. % of carbon black
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsYoichi Kawai, Masami Maki, Masaru Abe, Sachio Yokote, Katsumi Sekiguchi
Life of this patent
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Abstract
A polypropylene-base resin composition comprising a polypropylene-base resin and carbon black in an amount of 0.01-0.6 wt. % based on the polypropylene-base resin and being suitable for use in the production of molded articles having excellent paintability.
Claims15
A polypropylene resin composition suitable for use in the production of molded articles having excellent paintability, comprising:
- (a) 100 parts by weight of a crystalline ethylene-propylene block copolymer;
- (b) 7 to 60 parts by weight of a thermoplastic elastomer;
- (c) 3 to 30 parts by weight of an inorganic filler;
- and
- (d) 0.01 to 0.6 weight percent, based on the total weight of the copolymer (a), elastomer (b) and filler (c), of carbon black.
2 more elements
A polypropylene resin composition suitable for use in the production of bumpers having excellent paintability, comprising:
- (a) 100 parts by weight of a crystalline ethylene-propylene block copolymer;
- (b) 7-60 parts by weight of a thermoplastic elastomer;
- (c) 3-30 parts by weight of an inorganic filler;
- and
- (d) 0.01-0.6 wt. %, based on the sum of the copolymer (a), elastomer (b) and filler (c), of carbon black.
2 more elements
Dependencies are inferred from the claim text.