| 摘要 |
The invention is directed to a polymer composition based on a polycarbonate and a graft copolymer of a vinyl aromatic compound and an unsaturated nitrile compound on a rubber-like polymer. …<??>To improve the flow properties thereof, the invention is characterized in that the polymer composition contains:… A. one or more graft copolymers obtained by polymerizing 40-80 parts by weight of a monomer mixture consisting of:… 20-40 wt-% of acrylonitrile… 60-80 wt-% of styrene, and… 0-20 wt-% of one or more other monomers… in the presence of 20-60 parts by weight of rubber (with respect to 100 parts by weight of graft copolymer),… B. one or more graft copolymers obtained by polymerizing 75-90 parts by weight of a monomer mixture consisting of:… 20-40 wt-% of acrylonitrile… 60-80 wt-% of styrene and… 0-20 wt-% of one or more other monomers… in the presence of 10-25 parts by weight of rubber (with respect to 100 parts by weight of graft copolymer),… C. a copolymer of styrene and acrylonitrile obtained by polymerizing 60-80 parts by weight of styrene and 20-40 parts by weight of acrylonitrile, and… D. one or more polycarbonates,… the rubber content of the polymer composition being between 5 and 30 wt-% and the difference between the rubber contents of the graft copolymers being at least 5 wt-%. |
