Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1975-09-03
1979-05-01
Henderson, C. A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526 62, 526 86, 5263442, C08F 220, C08F 1406
Patent
active
041525019
ABSTRACT:
The necessity of opening a large polymerization reactor, in order to introduce a polymerization catalyst between charges in the batch suspension of polymerization of vinyl chloride on a commercial scale, is eliminated, thereby avoiding vinyl chloride emissions into the atmosphere, by isolating a segment of a charging conduit for a polymerization reactor containing vinyl chloride under pressure proximate the reactor; partially filling the isolated segment with water; charging the isolated segment above the water therein with a water-insoluble polymerization catalyst; and displacing into the reactor from the catalyst-charged segment first the water therein and then the catalyst therein with vinyl chloride under pressure.
REFERENCES:
patent: 2754289 (1956-07-01), Meyer
patent: 3004013 (1961-10-01), Kircher, Jr.
patent: 3578649 (1971-05-01), Badguerahanian
patent: 3642736 (1972-02-01), Downs
patent: 3678021 (1972-07-01), Chatelain
patent: 3787187 (1974-01-01), DeWitt
Lautsch Alfred
Schleicher Rudolf
Schonberg Karl-Heinz
Walther Jurgen
Winter Hermann
Chemische Werke Huels Aktiengesellschaft
Henderson C. A.
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