Bulk polymerization of vinyl chloride

Details Bulk polymerization of vinyl chloride Bulk polymerization of vinyl chloride

1974-04-02

1976-01-20

Henderson, Christopher A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 871, C08F 330, C08F 1530

Patent

active

039337766

ABSTRACT:
A process for preparing polymers and copolymers containing vinyl chloride by bulk polymerization which includes feeding to a reaction zone of a vessel maintained at polymerization temperature (t.sub.1) a solution (A) comprising monomeric material to be polymerized and at least one polymerization initiator, solution (A) being prepared continuously immediately before being fed to the reaction zone by mixing a constituent (B) comprising at least 50% of the monomeric material at a temperature (t.sub.2) which is within 10.degree.C of t.sub.1, and a solution (C) of the initiator of initiators in an organic solvent which would include the remainder, if any, of the monomeric material, and in which, when the polymerization reaction is carried out in a two stage polymerization including a first pre-polymerization and a subsequent polymerization, the pre-polymerization reaction is carried out under a high stage of agitation while the polymerization step is carried out at a lower stage of agitation.

REFERENCES:
patent: 3742091 (1973-06-01), Moberly
patent: 3759885 (1973-09-01), Thomas
patent: 3793259 (1974-02-01), Brinkmann

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