Moulding compositions based on a thermoplastic polycarbonate
This invention relates to thermoplastic moulding compositions with improved flowability based on a thermoplastic polycarbonate and on a copolymer of at least one olefin with at least one methacrylic ester or acrylic ester of an aliphatic alcohol, where the MFI of the copolymer is no less than 100 g/10 min, to a process for preparation of these moulding compositions, and also to the use of these moulding compositions for production of mouldings for the electrical industry, electronics industry, telecommunications industry, motor vehicle industry, or computer industry, in sports, in medicine, in households, or in the entertainment industry.
1. A thermoplastic moulding composition, consisting of:
A) from 99.9 to 10 parts by weight of at least one thermoplastic polycarbonate and
B) from 0.1 to 20 parts by weight of at least one copolymer formed of the copolymerization of at least one olefin and at least one methacrylic ester or acrylic ester of an aliphatic alcohol, wherein the MFI of the copolymer is no less than 100 g/10 min,
wherein said parts by weight is based on the weight of the thermoplastic moulding composition, wherein the at least one methacrylic ester or acrylic ester of an aliphatic alcohol is selected from the group consisting of 2-ethylhexyl acrylate and n-butyl acrylate, and the olefin is ethane.
2. The thermoplastic moulding composition according to claim 1 , wherein the copolymer is composed of less than 4% by weight of monomer units which contain reactive functional groups selected from the group consisting of epoxides, oxetanes, anhydrides, imides, aziridines, furans, acids, amines, and oxazolines.
3. The thermoplastic moulding compositions according to claim 1 , wherein the MFI of is not less than 150 g/10 min.
4. A process for producing a moldinq or semifinished product, comprising:
providing the thermoplastic moulding composition according to claim 1 , and
injection moulding or extruding the composition, thereby forming said molding or semifinished product.