Process for preparing .alpha.-methylstyrene-acrylonitrile copoly

Details Process for preparing .alpha.-methylstyrene-acrylonitrile copoly Process for preparing .alpha.-methylstyrene-acrylonitrile copoly

1983-09-23

1986-10-21

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526342, C08F 436, C08F22044

Patent

active

046186638

ABSTRACT:
A process for preparing .alpha.-methylstyrene/acrylonitrile copolymers by suspension or bulk polymerization of .alpha.-methylstyrene and acrylonitrile with or without other vinyl compounds such as styrene, methyl methacrylate, vinyl toluene and t-butylstyrene in the presence of a difunctional organic peroxide, preferably a difunctional organic peroxide having a 10 hour half-life temperature of 60.degree. to 110.degree. C., at a polymerization temperature of 80.degree. to 120.degree. C. The process produces the copolymers having excellent transparency, heat resistance and strength in high conversions in a short time.

REFERENCES:
patent: 2455569 (1949-12-01), Dickey
patent: 4131728 (1978-12-01), Priddy
patent: 4200593 (1980-04-01), van der Loos et al.
patent: 4340723 (1982-07-01), Duyzings et al.

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