Continuous process for the production of vinyl chloride polymers

Details Continuous process for the production of vinyl chloride polymers Continuous process for the production of vinyl chloride polymers

1982-08-09

1984-06-26

Henderson, C. A.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526 62, 526 65, 526 73, 526 74, 526200, 526202, 526210, C08F 1406, C08F 220

Patent

active

044567359

ABSTRACT:
The process is described for the continuous suspension polymerization of vinyl chloride in aqueous phase, in which the polymerization mixture is subjected, in 2 zones, to treatment employing different process parameters in respect of final conversion, dwell time, number of theoretical cascade stages and stirrer power applied. This procedure gives, at good space-time yields, very uniform products which have a narrow particle size distribution, a high bulk density, good flow and a low speck count. In spite of using standard kettle material, only a very low formation of deposit on the kettle walls is observed.

REFERENCES:
patent: 3004013 (1961-10-01), Kircher, Jr.
patent: 3678021 (1972-07-01), Chatelain
patent: 3879364 (1975-04-01), Kemp

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