Acrylic resin composition

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United States of America Patent

PATENT NO 6844396
APP PUB NO 20040043235A1
SERIAL NO

10229277

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An acrylic resin composition with excellent impact resistance, weatherability, processability and low gloss is provided. The acrylic resin composition comprises, (A) 10 to 40 parts by weight of a high molecular weight acrylic (co)polymer which is a one-step or multi-step polymer containing 72 to 100% by weight of methyl methacrylate and 0 to 28% by weight of a copolymerizable monomer, the (co)polymer having a specific viscosity of at least 0.5 (solvent: toluene, concentration: 0.4%, temperature: 30.degree. C.), wherein a polymer layer obtained in one of the steps contains at least 72% by weight of methyl methacrylate, has a specific viscosity of at least 0.5 and makes up at least 55% by weight of the total weight of the high molecular weight acrylic (co)polymer (A); (B) 0 to 80 parts by weight of an acrylic (co)polymer containing 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of a copolymerizable monomer, the acrylic (co)polymer having a specific viscosity of less than 0.5; (C) 10 to 90 parts by weight of an impact modifier with a multilayer structure, wherein the total of (A), (B) and (C) is 100 parts by weight and the composition has a melt flow index of 0.35 g/10 minutes to 1.4 g/10 minutes (230.degree. C., 3.8 kg load).

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Patent Owner(s)

Patent OwnerAddress
KANEKA AMERICAS HOLDING INC6250 UNDERWOOD ROAD PASADENA TX 77507

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishimura, Riichi League City, TX 10 72
Sugaya, Takahiko Houston, TX 9 32
Tajima, Kazuhisa Kobe, JP 6 35

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