Process for the polymerization of vinyl chloride

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

1975-08-29

1978-06-06

Henderson, Jr., Christopher A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260884, 526200, 526202, 526216, 526909, C08F 220, C08F 216

Patent

active

040937941

ABSTRACT:
A process for the polymerization of vinyl chloride which comprises adding to an aqueous dispersion of vinyl chloride polymer prepared by a suspension polymerization process, optionally containing vinyl chloride monomer, or a bulk polymerization process the additives necessary for emulsion polymerization, then effecting the polymerization of the vinyl chloride monomer present in the reactor prior to introducing the emulsion polymerization additives and/or vinyl chloride monomer added after the introduction of these additives.
Vinyl chloride polymers comprising vinyl chloride polymer particles produced by suspension or bulk polymerization having vinyl chloride granules agglutinated thereon said granules having the dimensions of vinyl chloride granules obtained by conventional emulsion polymerization.

REFERENCES:
patent: 2934529 (1960-04-01), van Dijk
patent: 3179646 (1965-04-01), Ingraham
patent: 3697493 (1972-10-01), Meyer
patent: 3856767 (1974-12-01), Sturt

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