Patent ID: 6890993
Filing Date: 2005-05-10
Classification: C08L

Abstract:
1. An impact resistant PMMA molding composition, comprising: a) a matrix of at least 75% by weight of methyl methacrylate from 0.1 to 15% by weight of acrylate and from 0 to 15% by weight of other copolymerizable compounds, b) another matrix of from 70 to 92% by weight of styrene from 8 to 30% by weight of acrylonitrile from 0 to 22% by weight of other comonomers, c) an impact modifier of silicone elastomer particles having a PMMA shell and d) an impact modifier based on acrylate rubber, where, based on the entire contents of a), b), c) and d), (i) the content of component b) ranges from 0 to 45% by weight, (ii) the content of component c) ranges from 5 to 35% by weight, and (iii) the content of component d) ranges from 1 to 30% by weight, and the molding composition has the following properties: a Vicat softening point to ISO 306 (B50) of at least 95° C., a notched impact strength NIS (Izod 180/1 eA, 1.8 MPa) to ISO 180 of at least 3.0 kJ/m a modulus of elasticity to ISO 527-2 of at least 2000 MPa.