Patent ID: 8716380
Filing Date: 2014-05-06
Classification: C08K

Abstract:
1. A composition comprising a melt polycarbonate, and a composition for stabilization of heat ageing comprising at least one phosphine, and n-octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate employed in an amount of from 10 to 800 mg/kg, based on the total weight of the composition, wherein said at least one phosphine is a compound of formula (I): wherein Ar R′ is an optionally substituted aryl radical or a radical of formula (Ia) to (Ih) wherein R is an optionally substituted C n and m wherein the H atoms of the radicals of formula (Ia) to (Ic) are optionally replaced by substituents, and with the proviso that R′ is optionally an optionally substituted 4-phenylphenyl or an optionally substituted α-naphthyl if Ar in formula (I) is in both cases likewise an optionally substituted 4-phenylphenyl or an optionally substituted α-naphthyl, at least one alkyl phosphate, wherein said at least one alkyl phosphate is a compound of formula (II): wherein R and wherein the composition has a subsequent yellowing ΔYI, after storage for 1000 hours at 135° C. in air, of less than 4.8.