Chemical resistant thermoplastic resin composition

Details Chemical resistant thermoplastic resin composition Chemical resistant thermoplastic resin composition

2008-07-08

2008-07-08

Mullis, Jeffrey C (Department: 1796)

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

Synthetic resins

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

C525S080000, C525S083000, C525S084000, C525S085000

Reexamination Certificate

active

11248527

ABSTRACT:
Disclosed is a resin composition comprising (A) 100 parts by weight of a base resin comprising a rubber-modified styrene-containing graft copolymer and a styrene-containing copolymer; (B) 0.5-8 parts by weight of an acrylic rubber graft copolymer resin having an average particle size of 0.1-0.5 μm; and (C) 0.5-8 parts by weight of a graft copolymer resin comprising an ethylene α-olefinic copolymer rubber having an average particle size of 0.1-0.8 μm. The thermoplastic resin composition of the present invention greatly improves chemical resistance to insulating materials, such as urethane foam, or foaming agent compounds, such as freon (CFC-11, HCFC-141b, HFC-245fa, HFC-245eb, HFC-245ca, HFC-356mffm) and cyclopentane and offers superior impact strength, whiteness and processability. It can be useful for extrusion sheets of refrigerator interiors.

REFERENCES:
patent: 6284830 (2001-09-01), Gottschalk et al.
patent: 2002/0082374 (2002-06-01), Schaedler et al.
patent: 10-338794 (1998-12-01), None

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