Chlorofluorocarbon resistant resin composition and a refrigerator inner casing formed from the same composition
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United States of America Patent
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Apr 18, 2000
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N/A
app pub date -
Jul 2, 1998
filing date -
Jan 5, 1996
priority date (Note) -
Expired
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Abstract
The invention relates to a chlorofluorocarbon resistant resin composition characterized by comprising an agglomerated graft polymer (Y) occurring in clusters having a weight average particle diameter of 0.8-2.0 .mu.m as formed from a small particle diameter graft polymer (y) obtained in a grafting degree of 10-40 weight % by polymerizing 60-20 weight % of a monomer mixture comprising 30-45 weight % of a vinyl cyanide compound and 70-55 weight % of an aromatic vinyl compound in the presence of 40-80 weight % of a rubber like polymer having a weight average particle diameter of 0.05-0.2 .mu.m and a copolymer (Z) obtained by polymerizing 35-45 weight % of a vinyl cyanide compound with 65-55 weight % of an aromatic vinyl compound and having an intrinsic viscosity of 0.6-0.9, the rubber like polymer accounting for 15-25 weight % of the total composition. The resin composition of the invention is superior to the conventional resin composition in chlorofluorocarbon resistance.
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