| abstract |
Polycarbonate moulding compositions containing (a) thermoplastic aromatic polycarbonates with a weight average molecular weight Mw of 27,000 to 40,000, (b) an 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. |