Polymer manufacture

Details Polymer manufacture Polymer manufacture

1973-04-05

1976-01-27

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 312R, 260 312XA, 260 328R, 260 332R, 260 334R, 260 336R, 260 336UA, 260857PA, 260857G, 260857UN, 260873, C08K 501, C08L 6700, C08L 7700, C08L 7908

Patent

active

039351556

ABSTRACT:
A stable dispersion of polymer in a non-solvent organic liquid is made from a monomer which is both solid and not completely soluble in the organic liquid at the polymerisation temperature, optionally in conjunction with other monomers which are appreciably soluble in the liquid medium at that temperature. The process comprises dispersing the solid monomer in the organic liquid in the presence of a specified monomer-stabilising agent so as to produce a stable dispersion of particles of mean diameter not greater than 50.mu., and then heating the dispersion of solid monomer together with the other monomers, if any, at the polymerisation temperature in the presence of a specified polymer-stabilising agent. A single stabilising agent combining the functions of monomer-stabiliser and polymer-stabiliser may be employed. The process is applicable to the production of both addition polymers and condensation polymers.

REFERENCES:
patent: 3317635 (1967-05-01), Osmond et al.
patent: 3383352 (1968-05-01), Duell et al
patent: 3532663 (1970-10-01), Nicks et al.
patent: 3640931 (1972-02-01), Clarke et al.
Sheldknecht, High Polymer Series, Vol. X, "Polymer Processes," Interscience Publishers, (N.Y.), 1956, pp. 71 & 105.

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