Acrylonitrile polymers stabilized against thermal...

Details Acrylonitrile polymers stabilized against thermal... Acrylonitrile polymers stabilized against thermal...

C - Chemistry, Metallurgy

08

K

400/9031, 400/92

C08K 5/16 (2006.01) C08L 33/20 (2006.01)

Patent

CA 1069644

ABSTRACT OF THE DISCLOSURE The Specification describes polymer materials comprising (a) a homopolymer of acrylonitrile or a copolymer of acrylonitrile and at least one further copolymerisable monomer, the copolymer containing at least 20% by weight of units of acrylonitrile; and (b) at least one alkyl, cycloalkyl or aryl isocyanate in an amount sufficient to inhibit or prevent thermal discoloration. The anti-discoloration additive can be incorporated into a monomer composition from which the homopolymer or copolymer is formed or can be admixed with the formed polymer.

243759

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