Styrene-based copolymer and process for production thereof

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525282, C08F 2008

Patent

active

051590255

ABSTRACT:
A styrene-based copolymer comprising 74.3 to 98.7 mol % of the structural unit (I) represented by the general formula: ##STR1## 1.3 to 25.4 mol % of the structural unit (II) represented by the formula: ##STR2## and 10 to 7000 mol ppm of the structural unit (III) represented by the general formula: ##STR3## (wherein R.sup.1 to R.sup.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.

REFERENCES:
patent: 3432479 (1969-03-01), Verdol et al.
patent: 3529993 (1970-09-01), Cummings
patent: 3792022 (1974-02-01), Jones
patent: 4889896 (1989-12-01), Canova et al.
Chemical Abstracts, vol. 82, No. 11, Jun. 2, 1975, p. 92, No. 141706q, Columbus, Ohio, US; & JP-A-74 99 630, Sep. 20, 1974.

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