Process for the production of synthetic rubber latices having a high solids content

摘要

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.