Color styrene-acrylonitrile polymers

Details Color styrene-acrylonitrile polymers Color styrene-acrylonitrile polymers

1980-01-16

1981-05-19

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526218, 526342, C08F21210

Patent

active

042686520

ABSTRACT:
A process for reducing the color of styrene-acrylonitrile polymers comprising polymerizing a feedstream of styrene and acrylonitrile monomers, optionally admixed with a diluent, in the presence of an unsymmetrical tertiary-aliphatic-alpha-cyano-azoalkane catalyst, said feedstream being substantially oxygen-free and said feedstream being maintained within a polymerization zone for a limited time.

REFERENCES:
patent: 3891609 (1975-06-01), Wolfe et al.
patent: 3931143 (1976-01-01), MacLeay et al.

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