Method for producing poly(vinyl chloride)

Details Method for producing poly(vinyl chloride) Method for producing poly(vinyl chloride)

1995-09-07

1998-04-21

Weber, Thomas R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526345, C08F 210, C08F 1406

Patent

active

057418748

ABSTRACT:
A method for producing a poly(vinyl chloride) comprises polymerizing vinyl chloride or a mixture of copolymerizable monomers containing vinyl chloride as the main component, in an aqueous medium, wherein the polymerization is carried out in a reaction vessel which is formed by arranging partition plates at certain intervals at right angles to the outer surface of an inner barrel and overlaying outer strips on and between the free ends of the partition plates to thereby form a flow passage unit having a flow passage for a heating medium defined by the partition plates, the inner barrel and the outer strips ("a temperature control element"); fixing the temperature control element in a vessel body so as to oppose the side of the outer strips with a gap to the inner surface of the vessel body, and sealing the upper and lower portions of the gap formed between the outer strip side of the temperature control element and the inner surface of the vessel body to form a gap chamber.

REFERENCES:
patent: 3282459 (1966-11-01), Wilson
patent: 3931131 (1976-01-01), Noziri et al.
patent: 4050901 (1977-09-01), Pfeiffer et al.
patent: 4125574 (1978-11-01), Kastner et al.
patent: 4752640 (1988-06-01), Tomishima et al.

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