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Effects of 6‐anilino‐1,3,5‐triazine‐2,4‐dithiol, zinc stearate, and barium stearate on the thermal stabilization of PVC
Author(s) -
Mori Kunio,
Kikuchi Isao,
Nakamura Yoshiro
Publication year - 1982
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1982.070270325
Subject(s) - zinc stearate , allylic rearrangement , stearate , zinc , barium , chlorine , chemistry , inorganic chemistry , polyene , dithiol , polymer chemistry , organic chemistry , catalysis , raw material
Individual action and synergistic effect in the combination of 6‐anilino‐1,3,5‐triazine‐2,4‐dithiol (AF), zinc stearate, and barium stearate on the color stabilization of PVC were investigated. In this system, AF selectively reacts with allylic chlorine atoms in PVC. Consequently, unstable allylic chlorine units were converted to thermally stable allylic structures, thus retarding the development of polyene sequences. Zinc stearate accelerated the reaction of AF with allylic chlorine atoms in PVC, forming the zinc salts of AF (AFZ n St, StC 1 –H 35 COO) by reacting with AF. Barium stearate reacted with ZnCl 2 which is formed in the above reaction to give St 2 Zn and BaCl 2 . Consequently, barium stearate led to the selective reaction of AF with allylic chlorine atoms in PVC and the remarkable retarding effect of discoloration of PVC.