Patent ID: 7695813
Filing Date: 2010-04-13
Classification: C08F,C08L,Y10T

Abstract:
1. A core-shell particle which has a core, a first shell and, optionally, a second shell, where: i) the core comprises, based on its total weight, at least 75.0% by weight of (meth)acrylate repeat units; ii) the first shell has a glass transition temperature below 30° C.; iii) the second shell optionally comprises, based on its total weight, at least 75.0% by weight of (meth)acrylate repeat units; wherein iv) the first shell comprises, based on its total weight, the following constituents; E) from 92.0 to 98.0% by weight of (meth)acrylate repeat units and F) from 2.0 to 8.0% by weight of styrenic repeat units of formula (I)  where each of the radicals R and in that v) the radius of the core-shell particle inclusive of any second shell present, measured by the Coulter method, is in the range from above 160.0 to 240.0 nm.