Process for the production of synthetic rubber latices having a

Details Process for the production of synthetic rubber latices having a Process for the production of synthetic rubber latices having a

1977-09-16

1979-04-17

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 297R, C08L 908

Patent

active

041500040

ABSTRACT:
A process for the production of synthetic rubber latices having a high solids content and a low viscosity by low-temperature redox emulsion polymerization with subsequent agglomeration of the latex particles with oxidized polyethylene oxides, comprises conducting the redox emulsion polymerization in a system wherein the ratio of monomers to water is 0.85 to 1.25; the amount of emulsifier is 2.0 to 4.0 parts by weight per 100 parts by weight of monomers; the alkali metal salt concentration in the aqueous phase is 35-70 mmol./l; and the average rate of conversion of monomers is 8% per hour.

REFERENCES:
patent: 2605242 (1952-07-01), Betts, Jr. et al.
patent: 2689235 (1954-09-01), Henson et al.
patent: 3272767 (1966-09-01), Howland et al.
patent: 3770674 (1973-11-01), Araki et al.
Brown et al., "Rubber World", Jul. 1955, pp. 471-476.

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