Methacrylic resin composition

Details Methacrylic resin composition Methacrylic resin composition

C - Chemistry, Metallurgy

08

L

400/4905

C08L 9/00 (2006.01) C08F 265/06 (2006.01) C08L 33/00 (2006.01) C08L 33/10 (2006.01) C08L 51/00 (2006.01)

Patent

CA 2040481

ABSTRACT The present invention provides a methacrylic resin composition which comprises a mixture of 20-99% by weight of a methacrylic resin and 1-80% by weight of a methacrylic two-layer polymer comprising the following inner layer (a) and outer layer (b) and having the following requirements (c)-(e): (a) the inner layer being obtained by polymerizing 90-99.9% by weight of a monofunctional monomer which is mainly composed of methyl methacrylate and 0.1-10% by weight of a polyfunctional monomer having at least two carbon-carbon double bonds in one molecule, (b) the outer layer being obtained by polymerizing a monofunctional monomer mainly composed of methyl methacrylate in the presence of the inner layer, (c) the weight ratio of the inner layer and the outer layer being 1:9 - 9:1, (d) the glass transition temperature being 50-120°C, and (e) the average particle size being 200-5000 .ANG.. This composition is excellent in processability, heat distortion resistance, mechanical properties and solvent resistance.

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