申请人:Shankar Ravi B.
公开号:US20080153950A1
公开(公告)日:2008-06-26
Phosphorus-sulfur compounds have flame retardant activity in organic polymer systems. The phosphorus-sulfur compounds can be represented by the structure:
wherein X is oxygen or sulfur, T is a covalent bond, oxygen, 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 when X′ is oxygen and zero, 1 or 2 when X′ is sulfur, n is at least 1 and preferably at least 2, each R is independently an unsubstituted or inertly substituted hydrocarbyl group or the R groups together form an unsubstituted or inertly substituted divalent organic group and A is an organic linking group.
磷硫化合物在有机聚合物系统中具有阻燃活性。磷硫化合物可以用以下结构表示:其中X是氧或硫,T是共价键,氧、硫或氮,但至少有一个X和T是硫,每个X'独立地是氧或硫,每个m在X'为氧时独立地为零或1,在X'为硫时为零、1或2,n至少为1,最好至少为2,每个R独立地是未取代或惰性取代的烃基,或者R基共同形成未取代或惰性取代的二价有机基团,A是有机连接基团。