Polyvinyl chloride compositions containing trizinc dimolybdate monohydrate and zinc phosphite for smoke suppression.

摘要

A smoke suppressed rigid or plasticized polyvinyl chloride polymer composition contains a polyvinyl chloride polymer and a small but effective amount of a smoke suppressant consisting essentially of a mixture of Zn<Sub>3</Sub>Mo<Sub>2</Sub>O<Sub>9</Sub>·H<Sub>2</Sub>O and ZnHPO<Sub>3</Sub>, in an atomic ratio of Mo to P of about 0.5 : 1 to about 2.0:1, to impart smoke suppression to the polymer composition.