Process for removing residual vinyl chlorine from the polymer

Details Process for removing residual vinyl chlorine from the polymer Process for removing residual vinyl chlorine from the polymer

1982-08-27

1984-01-03

Levin, Stanford M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

526345, C08F 600, C08F 628

Patent

active

044243405

ABSTRACT:
Vinyl chloride and any other comonomers present in a vinyl chloride polymer are removed by heating the polymer to a temperature between its glass transition temperature and 180.degree. C. by directly condensing steam on to the polymer, maintaining the polymer at this temperature sufficiently long to remove the greater part of the monomer or monomers present in the polymer and then cooling the polymer to below its glass transition temperature by evaporating the steam that has condensed on the polymer.

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