PROCESS FOR PRODUCING POLYMER LATEX

摘要

A process for producing a polymer latex comprising emulsion polymerization of a polymerizable monomer using a polymerization reactor in which an agitation axis 1 that is rotatable from outside of the reactor is installed at a center of said reactor, a bottom paddle 2 having a sweep back angle .alpha. of 30 to 60.degree. at its tipend is attached to said agitation axis 1 and installed in a bottom part of the reactor so that its lower edge is close to a bottom wall of the reactor, a flat paddle 3 having a plate-form fin 4 a tip end of which extends downward is attached to said agitation axis 1 at a position above said bottom paddle 2 at a crossing angle .beta. of 40 to 100.degree. with said bottom paddle 2, and at least two baffles 5 extending from the upper part to the lower part of said reactor are provided with a distance on a side wall of said reactor along a direction of said agitation axis. By this process, an amount of fine coagulates can be greatly decreased.