POLYPROPYLENE-BASED RESIN COMPOSITION PREVENTING COATED FILM FROM YELLOWING, AND EXTERIOR PART OF AUTOMOBILE USING THE SAME

Japanese Patent JP3872999

B2

PROBLEM TO BE SOLVED: To obtain a polypropylene-based resin composition enabling a coated film to resist yellowing excellently by preventing the coated film from yellowing caused by heat and sunbeam under the market environment wherein an automobile is used, and to provide an exterior part of the automobile such as a bumper, spoiler, side guard molding and radiator grille for the automobile which is a coated body of a polypropylene resin molded product using the composition.
SOLUTION: The polypropylene-based resin composition enabling the coated film to resist yellowing excellently is obtained by compounding specific amounts of specified two kinds of hindered phenol-based antioxidants and specific amounts of specified two kinds of phosphorus-based antioxidants, with a polypropylene resin composition comprising (A) 45-90 pts.wt. propylene-ethylene block copolymer, (B) 5-30 pts.wt. elastomer and (C) 5-25 pts.wt. inorganic filler. The exterior part of the automobile is obtained by coating the molded product comprising the composition.

JP5887274	Isobutylene-based block copolymer composition
JP2558540	[Title of Invention] Polypropylene resin composition
JP2002011748	METHOD FOR MANUFACTURING RESIN FOAM FOR CAR PART, AND RESIN FOAM

Shimounose Masashi
Yukihito Zanka
Masahiko Onishi
Takayuki Sato

JP2002102489A

January 24, 2007

April 04, 2002

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Japan Polypropylene Corporation
Nissan Motor Co., Ltd

C08L53/00; C08K3/00; C08K5/13; C08K5/134; C08K5/3435; C08K5/524; (IPC1-7): C08L53/00; C08K3/00; C08K5/13; C08K5/134; C08K5/3435; C08K5/524; //(C08L53/00; C08L101:00)

JP6212033A
JP4153241A
JP7118490A
JP6107897A
JP7179719A

WO2000052090A1

Kenji Kawabi

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