Cheil Industries Inc.

Mitsubishi Rayon Company, Limited

Byung Choon Lee

Han Su Lee

Sung Sig Min

Byeong Do Lee

Tae Uk Kim

Keiji Nakamura

Osamu Okunaka

Hiroyuki Nishii

Takashi Shouji

Disclosed is a thermoplastic resin composition having excellent impact resistance at a low temperature, while maintaining high transparency; this thermoplastic resin composition is obtained by compounding an impact resistance improver into a thermoplastic resin, the impact resistance improver being composed of a graft copolymer which is obtained by polymerizing a vinyl monomer component in the presence of a polymer mixture containing a polymer having butadiene units as an essential component and a polymer having styrene units as an essential component, the polymer mixture containing 45 to 65% by mass of the butadiene units and 35 to 55% by mass of the styrene units.

Impact resistance improver, thermoplastic resin composition, shaped article and method for producing graft copolymer

A polymer composition includes a polycarbonate resin, a syndiotactic polystyrene resin, a core-shell graft copolymer, and a phosphate ester compound. In some embodiments, the compositions have one or more of good impact strength, Falling Dart impact strength, chemical resistance, and flowability.

Polycarbonate resin compositions

Disclosed herein are a polycarbonate resin composition and a plastic article produced from the resin composition. The polycarbonate resin composition includes about 85 to about 99 parts by weight of a polycarbonate resin and about 1 to about 15 parts by weight of a core-shell graft copolymer, wherein the core-shell graft copolymer has a core-shell structure in which a vinyl monomer including methyl methacrylate and phenyl methacrylate is grafted onto a rubber.

Polycarbonate resin composition and plastic article

Disclosed is a silicone impact modifier with a high refractive index. The silicone impact modifier can include (A) a rubber core including (a) an organosiloxane cross-linked (co)polymer with a particle size of about 50 to about 400 nm and (a) an alkylacrylate-styrenic aromatic compound cross-linked copolymer; and (B) a plastic shell including a vinyl (co)polymer. The refractive index of the silicone impact modifier of the present invention can be about 1.49 to about 1.59.

Silicone impact modifier with high refractive index and method for preparing the same

Disclosed herein is an impact modifier for a polymer composition and a method of preparing the same. The impact modifier includes a core comprising a polyorganosiloxane, an acrylate polymer and a styrenic polymer; and a shell generally surrounding the core, the shell comprising a polymer attached to the core. The method includes providing a silicone rubber particle; adding a polymerizable styrenic compound into the silicone rubber particle; polymerizing the polymerizable styrenic compound within the particle to provide a styrenic polymer; adding a polymerizable acrylic compound into the silicone rubber particle; polymerizing the polymerizable acrylic compound within the silicone rubber particle to provide an acrylate polymer; and grafting a polymerizable compound onto the silicone rubber particle to provide a shell substantially surrounding the silicone rubber particle comprising the styrenic polymer and the acrylate polymer.

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Seoul, South Korea

Byung Choon Lee