Use of polyalkyl (meth) acrylate bead polymers and molding compound for the production of extruded molded parts with a matted surface

摘要

The present invention relates to the use of polyalkyl (meth) acrylate bead polymers having an average particle size V¶50¶ in the range of 30 to 70 mum for improving the stress cracking resistance of molding compositions comprising polyalkyl (meth) acrylate. DOLLAR A Further, the present invention describes molding compositions, DOLLAR A comprising DOLLAR A a) at least 50 wt .-% impact modifier comprising at least one polyalkyl (meth) acrylate phase, DOLLAR A b) at least 8 wt .-% polyalkyl (meth ) acrylate bead polymers having an average particle size V 50 'in the range from 30 to 70 μm and DOLLAR A c) from 0 to 42% by weight of polyalkyl (meth) acrylates having a molecular weight in the range from 20 000 to 350 000 g / mol, DOLLAR A wherein the wt .-% of components a) to c) 100 wt .-%, as well as moldings obtainable therefrom.