Polymerization of vinyl chloride with a clay and a hydrophilic p

Details Polymerization of vinyl chloride with a clay and a hydrophilic p Polymerization of vinyl chloride with a clay and a hydrophilic p

1986-10-02

1988-04-19

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526200, 526201, 526202, C08F 220

Patent

active

047390239

ABSTRACT:
There is disclosed a suspension polymerization of vinyl chloride in which the suspension of monomers as droplets is maintained, and the droplets of polymer are prevented from coalescence by the addition of an expanding lattice clay, preferably a magnesium alumina silicate clay, most preferably, Veegum, and a hydrophilic polymer. The hydrophilic polymer can be a partially hydrolized polyvinyl alcohol, a hydroxyalkyl cellulose ether, or a cross-linked polyacrylic acid, the latter being preferred. These addities enhance polymerization by reducing polymerization time and reducing deposition of the polymer in the reactor. Additionally, the shape and particle size distribution of the polymer is improved.

REFERENCES:
patent: 3383346 (1968-05-01), Smith
patent: 3468828 (1969-09-01), Perrins
patent: 3899473 (1975-08-01), Johansson

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