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Journal of Central South University of Technology

, Volume 7, Issue 3, pp 146–148 | Cite as

Synthesis and thermal stability of antimony tris (thioethyl stearate) for PVC

  • Liu You-nian 
  • Wang Chun-jiang 
  • Shu Wan-gen 
  • Zeng Dong-ming 
  • Chen Qi-yuan 
Article
  • 63 Downloads

Abstract

A novel type of thermal stabilizer-antimony tris (thioethyl stearate) (ATS) was synthsized. Its thermal stability was measured by heat-aging oven test when incorporated into PVC. ATS was synthesized from stearic acid, antimony trioxide and 2-mercaptoethanol in two steps. The reaction conditions of synthesis were optimized through orthogonal test. Experimental results show that the molar ratio of stearic acid and antimony tris (2-hydroxyethylthiolate) was 1.2, adding 0.6% tetra-n-butyl titanate as catalyst and xylene as azeotropic solvent, heating and refluxing for about 4 h, and the yield of ATS is 83.9%. The thermal stability time is about 40 min(at 200 °C) when added 2phr(per hundred resin) in PVC. The thermal stability of ATS is better than that of Ca-Zn complex and basic lead stabilizers, and equal to that of dibutyltin dilaurate.

Key words

thermal stabilizer antimony thiolate synthesis thermal stability 

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Copyright information

© Central South University 2000

Authors and Affiliations

  • Liu You-nian 
    • 1
  • Wang Chun-jiang 
    • 1
  • Shu Wan-gen 
    • 1
  • Zeng Dong-ming 
    • 1
  • Chen Qi-yuan 
    • 1
  1. 1.College of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina

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