Method of polymerizing vinyl chloride

Details Method of polymerizing vinyl chloride Method of polymerizing vinyl chloride

1975-07-17

1976-05-25

Holler, Alan

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

Synthetic resins

Polymerizing in reactor of specified material, or in reactor...

526332, 526296, 526342, 526255, 526345, 526 74, 526219, 526227, 526232, 526213, 526209, 526210, 526199, 526200, 526201, 526271, 526280, 526319, 526317, C08F 218, C08F 222

Patent

active

039592359

ABSTRACT:
Vinyl chloride monomer, or a monomeric mixture comprising vinyl chloride as a main component and other monomers co-polymerizable therewith in an aqueous reaction medium, is polymerized in a polymerization vessel. All of the surfaces of the inside walls of the vessel and the agitator blades, the baffle plates and the like with which the vessel is equipped, are coated prior to the polymerization with at least one of a specific class of nitrogen-containing aromatic heterocyclic compounds. Not only is the deposition of polymer scale surprisingly reduced, but also the polymer thus obtained has good physical and chemical properties.

REFERENCES:
patent: 3515709 (1970-06-01), Nelson et al.
patent: 3562238 (1971-02-01), Parks
patent: 3661867 (1972-05-01), Koyanagi et al.
patent: 3669946 (1972-06-01), Koyanagi et al.
patent: 3778423 (1973-12-01), Reiter
patent: 3817959 (1974-06-01), Balwe et al.
patent: 3842055 (1974-10-01), Gabriel et al.

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