Patent ID: 8178624
Filing Date: 2012-05-15
Classification: C08L

Abstract:
1. A colored molding composition, comprising, based on the total weight of the composition: A) 50.0% by weight to 99.5% by weight of at least one (meth)acrylate (co)polymer, which is a copolymer of methyl methacrylate, styrene and maleic anhydride, and B) 0.5% by weight to 50.0% by weight of at least one copolymer obtained by polymerization of a monomer mixture comprising: based on the total weight of B): i. 70% by weight to 92% by weight of a vinylaromatic monomer and ii. 8% by weight to 30% by weight of acrylonitrile, methacrylonitrile or a mixture thereof and iii. 0% by weight to 22% by weight of at least one further monomer, the sum of A) and B) being 100% by weight wherein the composition has a ΔE of less than 0.15 at 50° C., ΔE being defined by relationship (1): in which ΔL* designates a change in the color coordinate L* compared with the color coordinate L* at 23° C. Δa* designates a change in the color coordinate a* compared with the color coordinate a* at 23° C. Δb* designates a change in the color coordinate b* compared with the color coordinate b* at 23° C., and the composition comprises at least one (meth)acrylate (co)polymer a) having a solution viscosity in chloroform at 25° C. (ISO 1628—part 6) of greater than 55 ml/g, wherein the molding has a Vicat-Softening Temperature measured according to ISO 306-B50 of at least 109° C.