| 摘要 |
PURPOSE: To obtain an aromatic vinyl/vinyl cyanide copolymer prevented in the staining of a mold due to the adhesion of an oil to the mold and reduced in silver streaks. CONSTITUTION: An aromatic vinyl/vinyl cyanide copolymer is obtained by copolymerizing 50-97wt.% of an aromatic vinyl compound with 3-50wt.% of a vinyl cyanide compound by a non-aqueous polymerization method. Therein, the content of low mol.wt. components corresponding to the dimers and/or trimers in the copolymer is <=3000ppm, and the content of toluene insolubles corresponding to the gel component in the copolymer is <=100ppm.
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