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Initiators for the polymerization of propylene sulphide

✍ Scribed by W. Cooper; D.R. Morgan; R.T. Wragg

Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
370 KB
Volume
5
Category
Article
ISSN
0014-3057

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✦ Synopsis

Abstraet--Propylene sulphide is polymerized by zinc and cadmium thiolates, the latter being particularly active initiators. The polymerizations are non-terminating and there is a period of accelerating rate after which the rates are first order in monomer and initiator. The monomer is considered to be coordinated to the metal atom in the propagation reaction.

Thiols are chain transfer agents and, dependent on the amount and functionality of the thiol, the molecular weight and branching in the polymer can be controlled.

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