Patent ID: 6359042
Filing Date: 2002-03-19
Classification: B32B,C08K,C09D,Y10T

Abstract:
Moulding compositions containinga) thermoplastic, aromatic polycarbonates with a weight average molecular weight {overscore (M)}w of 27,000 to 40,000, b) a concentration of UV absorber with a molecular weight of 370 or more in amounts of 3.5 wt. % to 20 wt. %, with respect to the weight of polycarbonate and c) 2 types of mould release agent comprising c.1) monoesters formed from glycerine and a fatty acid, in amounts of 0.01 to 0.1 wt. %, with respect to the weight of polycarbonate, and c.2) (partial)esters of tetra- to hexahydric alcohols, in amounts of 0.05 to 0.25 wt. %, with respect to the weight of polycarbonate, characterised in that the ratio by weight of c.1) to c.2) is between 1:25 and 1:2.