PVC热稳定剂——羧酸巯基乙酯锑的合成及性质  

Synthesis of Antimony Tris(Thioethyl Carboxylates) as Thermal Stabilizers for Poly(vinyl chloride)

作　　者：刘又年[1] 舒万艮[1] 王春江[1] 曾冬铭[1] 陈启元[1] 

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《应用化学》2001年第6期450-453,共4页Chinese Journal of Applied Chemistry

基　　金：国家"九五"科技攻关计划基金资助项目 (96-119-0 4-0 3 -0 5

摘　　要：以 Sb2 O3 和 HSCH2 CH2 OH为原料合成 Sb(SCH2 CH2 OH) 3 ;再将 Sb(SCH2 CH2 OH) 3 与 RCOOH反应 ,以钛酸丁酯作催化剂 ,二甲苯为溶剂 ,加热回流反应 ,得到逆酯锑 .产品的热稳定性能测试表明 :当逆酯锑的添加量为 2 %时 ,PVC树脂的热稳定时间为 8～ 4 0 min(2 0 0℃ ) .还对该类热稳定剂对 PVC的热稳定机理进行了初步探讨 .A kind of thermal stabilizers for PVC antimony tris(thioethyl carboxylate) (Sb(SCH_2CH_2OOCR)_3, (R:C_nH_2n+1, n=7,11,17), was synthesized from carboxylic acid, antimony trioxide and 2-mercapto ethanol in two steps using tetra-n-butyl titanate as catalyst and xylene as azeotropic solvent. The thermal stab ility time was about 8~40 min(at 200 ℃) when they were blended in 2% mass ratio in PVC. The thermal stability of tris(thioethyl stearate) was better than that of Ca-Zn complex stabilizers and lead complex stabilizers. It can match dibutyltin dilaurate. The stabilization mechanism of the stabilizers for PVC was disscussed briefly.

关 键 词：羧酸基乙酯锑 硫醇锑 聚氯乙烯 热稳定剂 合成 性质 热稳定机理 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ314.245