Method for suspension polymerization of vinyl chloride monomer

Details Method for suspension polymerization of vinyl chloride monomer Method for suspension polymerization of vinyl chloride monomer

1988-06-27

1989-05-02

Henderson, Christopher

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

Synthetic resins

Effecting a change in a polymerization process in response...

526 73, 526 84, 526 88, C08F 220

Patent

active

048269409

ABSTRACT:
The time taken for a run of suspension polymerization of vinyl chloride monomer can be remarkably decreased without affecting the quality of the resin product when the temperature of the polymerization mixture under polymerization is increased continuously or step-wise during the period in which the conversion of the monomer to polymer is 10% or larger in such a manner that the average degree of polymerization of the polymer taken at an intermediate stage by sampling is always in the range from 90% to 110% of that of the finally obtained polyvinyl chloride resin product.

REFERENCES:
patent: 3468859 (1969-09-01), Davies
patent: 3627853 (1971-12-01), Bond
patent: 3661867 (1972-05-01), Koyanagi
patent: 3956251 (1976-05-01), Feiler

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