The invention concerns a simple, reliable and reproduc- able process for preparing an impact resistant thermoplastic moulding compound based on a copolymer consisting of styrene and/or a-methyl-styrene and maleic anhydride, characterized in that the moulding compound is prepared by mixing 50-95 % (wt) of a copolymer consisting of:
1. 50-95 % (wt) styrene and/or -methylstyrene
2. 50-5 % (wt) maleic anhydride
3. 0-20 % (wt) acrylate
4. 0-20 % (wt) acrylonitrile
with
5-50 % (wt) rubber modified with hydroxyl groups and 0-30 % (wt) unmodified rubber to be mixed in the presence of 0.01-10 parts by weight of a reaction accelerator, calculated on 100 parts by weight copolymer and modified rubber, at a temperature between 160°C and 290°C.
本发明涉及一种制备抗冲击热塑性模塑料的简单、可靠和可重复的工艺,该模塑料基于由
苯乙烯和/或a-
甲基苯乙烯和
马来酸酐组成的共聚物,其特征在于,该模塑料是通过混合50-95%(重量百分比)由以下物质组成的共聚物制备的:
1.50-95% (重量百分比)
苯乙烯和/或
甲基苯乙烯; 2.
2.50-5%(重量)
马来酸酐
3.0-20 %(重量百分比)
丙烯酸酯 4.
4.0-20 %(重量百分比)
丙烯腈
含
5-50%(重量)羟基改性橡胶和 0-30%(重量)未改性橡胶,在 0.01-10 份(重量)反应
促进剂(按 100 份(重量)共聚物和改性橡胶计算)的存在下,在 160°C 至 290°C 的温度下混合。