PHOSPHORUS-SULFUR FR ADDITIVES AND POLYMER SYSTEMS CONTAINING SAME

摘要

Phosphorus-sulfur compounds have flame retardant activity in organic poly mer systems. The phosphorus-sulfur compounds can be represented by the struc ture: Formula (I) wherein X is oxygen or sulfur, T is a covalent bond, oxyge n, sulfur or nitrogen, provided that at least one of X and T is sulfur, each X' is independently oxygen or sulfur, each m is independently zero or 1 whe n X' is oxygen and zero, 1 or 2 when X' is sulfur, n is at least 1 and prefe rably at least 2, each R is independently an unsubstituted or inertly substi tuted hydrocarbyl group or the R groups together form an unsubstituted or in ertly substituted divalent organic group and A is an organic linking group.< /SDOAB>