申请人:Dow Global Technologies LLC
公开号:US08058332B2
公开(公告)日:2011-11-15
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。磷硫化合物的结构可以表示为:其中X为氧或硫,T为共价键,氧,硫或氮,要求至少X和T中的一个为硫,每个X′独立地为氧或硫,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独立地为未取代或惰性取代的烃基,或R基共同形成未取代或惰性取代的二价有机基团,A为有机连接基团。