Patent Number: 6,309,739

Title: Methacrylic acid ester resin composition and film made thereof

Abstract: A methacrylate, resin composition having an excellent processability and capable of providing films having excellent impact resistance, transparency, weatherability, solvent resistance and plasticizer migration resistance, which comprises (A) 5 to 50% by weight of a crosslinked acrylate elastomer having a two layer structure of a crosslinked polymer component (a-1) having a glass transition temperature of -30 to 10.degree. C. and a crosslinked polymer component (a-2) having a glass transition temperature of less than -30.degree. C. wherein the component (a-1) is located on the inner side or the outer side and the component (a-2) is located on the outer side or the inner side, and (B) 95 to 50% by weight of an alkyl methacrylate polymer prepared by polymerizing an acrylic monomer containing 80 to 100% by weight of an alkyl methacrylate and 20 to 0% by weight of an alkyl acrylate in the presence of a chain transfer agent and in the presence or absence of the elastomer (A). The composition may further contain a core-shell polymer prepared by graft-polymerizing a monomer containing a major amount of an alkyl methacrylate onto a crosslinked acrylate polymer, whereby molded articles having a matt surface and an excellent flex whitening resistance are obtained.

Inventors: Koizumi; Keishi (Settsu, JP), Matsumoto; Shigemi (Akashi, JP), Okimi; Takao (Settsu, JP), Nishimura; Juuichi (Takatsuki, JP)

Assignee: Kaneka Corporation

International Classification: C08J 5/18 (20060101); C08L 33/00 (20060101); C08L 33/10 (20060101); C08L 51/00 (20060101); C08J 005/18 ()

Expiration Date: 10/30/2018