Process for preparing alpha-methylstyrene polymers

Details Process for preparing alpha-methylstyrene polymers Process for preparing alpha-methylstyrene polymers

1978-02-24

1979-09-25

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F21206, C08F21210

Patent

active

041691954

ABSTRACT:
Polymers containing greater than 60 wt% alpha methylstyrene, from 28 to 35 wt% acrylonitrile and from 0 to 7 wt% styrene having excellent color and usefully high molecular weights result from suspension polymerization of the monomer mixture above 90.degree. C. and employing monomer phase to aqueous phase ratios greater than 1:1.5.

REFERENCES:
patent: 3010936 (1961-11-01), Irvin
patent: 3201375 (1965-08-01), Finestone
patent: 3491071 (1970-01-01), Lanzo
patent: 3931128 (1976-01-01), Takizawa et al.

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