Polypropylene-based resin composition for powder slush molding

Details Polypropylene-based resin composition for powder slush molding Polypropylene-based resin composition for powder slush molding

2005-06-14

2005-06-14

Wu, David W. (Department: 1713)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S241000, C525S232000, C524S487000, C524S490000, C524S474000

Reexamination Certificate

active

06906144

ABSTRACT:
A polyproplylene-based resin composition for powder slush molding which is a mixture of a polypropylene homopolymer, copolymer, or terpolymer; an olefin rubber; a styrene rubber; a process oil; and a polypropylene wax, wherein the composition is excellent in low-temperature impact resistance and heat resistance and has no offensive odor. The composition can be formed by a cryofreeze pulverization method in the presence of liquid nitrogen into a powder having an average particle size of 200 to 300 μm suitable for powder slush molding. The powder can be adhered to a polyurethane foamed layer and a surface treating agent without a primer coating. The powder is particularly suitable for forming the interior surface for manufacture of an automobile surface such as an instrument panel.

REFERENCES:
patent: 6218474 (2001-04-01), Valligny et al.
patent: 6506495 (2003-01-01), Enami et al.
patent: 6812285 (2004-11-01), Enami et al.
patent: 07-278901 (1995-10-01), None
patent: 2000-204207 (2000-07-01), None
JP 2000-204207 (English translation).
JP 10-287775, Oct. 27, 1998 (abstract in English only).

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