| abstract |
The invention relates to a polymer composition on the basis of a copolymer of a vinyl aromatic compound and maleic anhydride and a copolymer on the basis of a vinyl aromatic compound and acrylonitrile, characterized in that the polymer composition comprisesn a) one or more polymers obtained by polymerization of 20-100 parts by weight of a mixture of 60-80 wt.% styrene and/or a-methyl styrene and 20-40 wt.% acrylonitrile in the presence of 0-80 parts by weight of rubber, and b) a copolymer consisting of 60-80 parts by weight of styrene and 20-40 parts by weight of maleic anhydride, A M 20 . 80 being less than 2 wt.% maleic anhydride. n Such polymer compositions have an increased dimensional stability at elevated temperatures in combination with an excellent resistance to solvents, impact resistance, processability and flow. |