Method for preparing vinyl chloride polymers

Details Method for preparing vinyl chloride polymers Method for preparing vinyl chloride polymers

1978-04-05

1980-02-19

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 81, 526211, 526214, 526330, 526344, 526345, C08F 1406

Patent

active

041895525

ABSTRACT:
Vinyl chloride polymers or copolymers having a relatively low molecular weight or degree of polymerization are prepared by a method in which an organic compound containing a mercapto group and a hydroxy or carboxyl group in a molecule is used as the chain transfer agent. Due to their very high activity, these chain transfer agents are used in amounts that are smaller than conventionally required quantities. The quality of the polymer products is satisfactory with respect to heat stability, occurrence of fish-eyes, particle size distribution, plasticizer absorption and ease of removing residual monomer.

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