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Citation: LIU You-Nian, SHU Wan-Gen, WANG Chun-Jiang, ZENG Dong-Ming, CHEN Qi-Yuan. Synthesis of Antimony Tris(Thioethyl Carboxylates) as Thermal Stabilizers for Poly(vinyl chloride)[J]. Chinese Journal of Applied Chemistry, ;2001, 18(6): 450-453. shu

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

1.
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083

Received Date: 30 June 2000
Available Online: 24 November 2000
Fund Project: 国家"九五"科技攻关计划基金资助项目(96-119-04-03-05) (96-119-04-03-05)

A kind of thermal stabilizers for PVC antimony tris (thioethyl carboxylate) (Sb(SCH₂CH₂OOCR)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.
- antimony thiolate,
- antimony tris(thioethyl carboxylate),
- PVC thermal stabilizer
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