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The effect of organotin chlorides on the thermal stability of PVC
Author(s) -
Wirth H. O.,
Müller H. A.,
Wehner W.
Publication year - 1979
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730010112
Subject(s) - isomerization , chemistry , thermal stability , zinc , metal , chloride , thermal , polyvinyl chloride , polymer chemistry , inorganic chemistry , organic chemistry , catalysis , thermodynamics , physics
Metal chlorides formed from metal stabilizers under processing conditions have an influence on the thermal stability of PVC. Zinc chloride, e. g., has a strong destabilizing effect, whereas lead chloride behaves almost indifferently. Alkyltin chlorides however, have a stabilizing effect in as much as they cause a significant retardation of the thermal dehydrochlorination rate of PVC. Using 1‐chlorobutene‐2 as model substance, a chloro allyl isomerization could be proved caused by organotin chlorides under certain conditions. These results support a complex chemical isomerization concept to explain the stabilizing effect of organotin chlorides on PVC.