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US 8,541,506 B2Granted
Polycarbonate resin composition with excellent scratch resistance and impact strength
AssigneeCheil Industries Inc.
InventorsKee Hae Kwon, Jin Hwa Chung, Kwang Soo Park, Sang Ki Park, Il Jin Kim
Life of this patent
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Abstract
A polycarbonate resin composition according to the present invention comprises a polycarbonate resin and an ultra-high molecular weight branched acrylic copolymer resin and can have excellent transparency, appearance, and flowability, as well as scratch resistance and impact strength.
Claims18
A polycarbonate resin composition comprising:
- (A) about 50 to about 99 parts by weight of a polycarbonate resin;
- and
- (B) about 1 to about 50 parts by weight of a ultra-high molecular weight branched acrylic copolymer resin,
- wherein (B) the ultra-high molecular weight branched acrylic copolymer resin comprises a polymer or a combination of polymers prepared by polymerizing a monomer mixture comprising (b1) an aromatic methacrylate monomer, an alicyclic methacrylate monomer, or a combination thereof, (b2) a monomer copolymerizable with the aromatic methacrylate monomer, the alicyclic methacrylate monomer, or the combination thereof comprising methyl methacrylate, ethyl methacrylate, propyl methacrylate, methyl acrylate, ethyl acrylate, propyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, monoglycerol acrylate, acrylic acid, methacrylic acid, maleic anhydride, or a combination thereof, (b3) a (meth)acrylic monomer having a flexible segment, and (b4) a monomer forming a branched structure;
- wherein (b3) the (meth)acrylic monomer having a flexible segment comprises a compound represented by the following Chemical Formula 5 or a combination thereof:
- wherein m is an integer from 10 to 18, X is hydrocarbon, and Y is methyl or hydrogen.
3 more elements
Dependencies are inferred from the claim text.