Copolymere auf der Basis von Styrol und Verfahren zu ihrer Herstellung.

摘要

A styrene-based copolymer comprising 74.3 to 98.7 mol% of the structural unit (I) represented by the general formula: 1.3 to 25.4 mol% of the structural unit (II) represented by the formula: and 10 to 7000 mol ppm of the structural unit (III) represented by the general formula: (wherein R<1> to R<3> are as defined in the appended claims), characterized by having toluene-insoluble content of not more than 0.5% by weight, is disclosed. Efficient processes for producing the above styrene-based copolymer are also disclosed.