Process for terminating the polymerization of vinyl chloride wit

Details Process for terminating the polymerization of vinyl chloride wit Process for terminating the polymerization of vinyl chloride wit

1990-08-06

1992-10-27

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 83, 526 85, 5263442, C08F 238

Patent

active

051590328

ABSTRACT:
A process for preparing a vinyl chloride polymer, which comprises polymerizing vinyl chloride or a monomeric mixture composed mainly of vinyl chloride in an aqueous medium, wherein the polymerization reaction is terminated at the last stage of polymerization by addition of an aqueous dispersion of an antioxidant, containing a polyoxyalkylene glycol as a dispersing agent. A polymer with good initial coloration characteristic, thermal stability and take-up of plasticizer, and large bulk density can be obtained.

REFERENCES:
patent: 4346202 (1982-08-01), Cohen
patent: 4590301 (1986-05-01), Lim

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