Patent ID: 8349927

Claim:
A composition comprising A) from 10 to 90 parts by weight aromatic polycarbonate and/or aromatic polyester carbonate, B) from 0.5 to 30 parts by weight rubber-modified graft polymer, C) from 0 to 40 parts by weight vinyl (co)polymer (C.1) and/or polyalkylene terephthalate (C.2), D) from 0.1 to 10.0 parts by weight polyorganosiloxane/filler composition comprising (D.1) at least one polyorganosiloxane comprising units of formula (IV): R r SiO (4-r)/2 (IV) wherein R is selected from the group consisting of vinyl, allyl, methallyl, 1-propenyl, 1-butenyl, 1-pentenyl, 5-hexenyl, butadienyl, hexadienyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, ethynyl, propargyl, 1-propynyl, methyl, 3-chloropropyl, 3,3,3-trifluoropropyl, perfluorohexylethyl, p-chlorophenyl and p-chlorobenzyl radicals, r is 0, 1, 2 or 3,and the average numerical value of r is from 1.9 to 2.1, (D.2) from 1 to 200 parts by weight, based on 100 parts by weight of the polyorganosiloxane (D.1), of a filler selected from the group consisting of pyrogenic and precipitated silicas having BET surface areas of at least 50 m 2 /g (according to DIN 66131/2), and (D.3) from 0 to 20 parts by weight, based on 100 parts by weight of the polyorganosiloxane (D.1), of at least one additive for preparing a granulate, and (D.4) optionally at least one further auxiliary substance selected from the group consisting of processing aids, plasticisers, pigments and stabilisers, E) from 0 to 20.0 parts by weight of an inorganic compound having a Mohs hardness of at least 2.5, F) from 0 to 20 parts by weight of at least one phosphorus-containing flameproofing agent, G) from 0 to 10 parts by weight of at least one further additive, all parts by weight being normalised such that the sum of the parts by weight of all the components A+B+C+D+E+F+G in the composition is 100, and wherein there is an increase in stress cracking resistance of at least 59.4% in engine oil, or an increase in stress cracking resistance of at least 20.4% in rape oil, or an increase in stress cracking resistance of at least 5.1% in hand lotion, over a control composition without component D), or wherein the impact resistance of the composition is at least 208 kJ/m 2 .