Multi-layer structure polymer composition

Details Multi-layer structure polymer composition Multi-layer structure polymer composition

C - Chemistry, Metallurgy

08

F

400/2026, 400/30

C08F 265/00 (2006.01) B32B 27/28 (2006.01) C08F 285/00 (2006.01) C08L 51/00 (2006.01) C08L 57/00 (2006.01) C08L 87/00 (2006.01)

Patent

CA 1063287

MULTI-LAYER STRUCTURE POLYMER COMPOSITION ABSTRACT OF THE DISCLOSURE A multi-layer structure polymer composition composed of an innermost layer (A), an elastomeric layer (B), an outermost layer (C), and at least one intermediate layer, said layer (A) having a glass transition temperature (Tg) of 10°C. or higher and consisting of the reaction product of 51 to 100 parts by weight of an alkyl meth- acrylate whose alkyl group has 4 or less carbon atoms, 0 to 49 parts by weight of a copolymerizable monomer, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent; said layer (B) having a glass transition temperature (Tg) of 0°C. or lower and consisting of the reaction product of 80 to 100 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 20 parts by weight of a copolymerizable monomer, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent; said layer (C) having a glass transition temperature (Tg) of 50°C. or higher and consist- ing of the reaction product of 51 to 100 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, and 0 to 49 parts by weight of a copolymeri- zable monomer; and said intermediate layer consisting of the reaction product of 10 to 90 parts by weight of an alkyl methacrylate whose alkyl group has 4 or less carbon atoms, 90 to 10 parts by weight of an alkyl acrylate whose alkyl group has 8 or less carbon atoms, 0 to 10 parts by weight of a polyfunctional monomer, and 0.1 to 5 parts by weight of a graftlinking agent. The said polymer composi- tion is excellent in transparency, gloss, and resistance to stress whitening and has good resistance to weather and impact.

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