| 摘要 |
<p>The invention relates to a polymer composition based on a graft copolymer of styrene and acrylonitrile on a rubber and a copolymer of alpha -methylstyrene and acrylonitrile . …<??>According to the invention, this polymer composition is characterized in that it consists of:… A. 50 to 75 wt-% of a graft copolymer obtained by polymerizing 62.5-75 parts by weight of a monomer mixture consisting of:… 20-40 wt-% of acrylonitrile… 40-80 wt-% of styrene and… 0.30 wt-% of one or more other monomers in the presence of 25-37.5 parts by weight of rubber (with respect to 100 parts by weight of the graft copolymer), and… B. 25 to 50 wt-% of a copolymer of alpha -methylstyrene and acrylonitrile obtained by polymerizing a mixture of 60-80 parts by weight of alpha -methylstyrene and 20-40 parts by weight of acrylonitrile, and… C. 0 to 10 wt-% of customary additives, the polymer composition containing at least 15 wt-% rubber.</p> |
