Color stabilized acrylonitrile polymers

摘要

Compositions containing a polymer or copolymer of acrylonitrile stabilized against thermal discoloration by the presence, in the composition, of a nitroalkane, a nitrocycloalkane, an alkyl-, cycloalkyl-, or aryl-isocyanate, or of a pyrocarbonic acid dialkyl ester are disclosed together with methods for making such compositions.