Impact modified polycarbonate compositions

Resin composition comprising:

• A) 5 to 99 wt.-parts of at least one aromatic polycarbonate,
• B) 1 to 95 wt.-parts of at least one graft rubber copolymer which is obtained by:
• emulsion polymerization of styrene and acrylonitrile in the weight ratio 95:5 to 50:50, whereby styrene and/or acrylonitrile wholly or partially can be replaced by copolymerizable monomers, onto at least two rubber latices, comprising:
• a butadiene rubber latex (B1) having a weight median particle diameter D50 of 100 to 250 nm, and a gel content from 30 to 80% by weight, and
• a butadiene rubber latex (B2) having a weight median particle diameter D50 of more than 350 nm, and a gel content of less than 75% by weight,
• C) optionally 0 to 50 wt.-parts of one or more (co)polymer of at least one monomer selected from the group consisting of vinyl aromatic monomers, vinyl cyanides and unsaturated carboxylic acids and derivatives thereof,
• D) optionally 0 to 25 wt.-parts of conventional polymer additives, wherein
• the weight median particle diameter D50 of the mixture of the butadiene rubber latices (B1) and (B2) is larger than 350 nm and is less than 1000 nm, and the amount of the butadiene rubber latex polymer (B1) in the graft rubber copolymer B) is 1 to 49% by weight (B1) and the amount of the butadiene rubber latex polymer (B2) is 51 to 99% by weight, based on the total weight of the rubber latex polymers in the graft rubber copolymer B).