Latex coagulation

An improved process for the coagulation of an aqueous latex of a polymer which comprises contacting a stream of said latex with an aqueous stream of an inorganic coagulant and separating, recovering and drying a coagulated polymer therefrom wherein said polymer comprises a rubbery C.sub.4 -C.sub.6 conjugated diolefin-containing polymer, the improvement being that said latex and said coagulant are mixed in a tubular coagulation means of narrow diameter elongate form at a temperature of from about 50.degree. to about 80.degree. C. for a time of from about 0.1 to about 25 seconds and under conditions of flow described by a Reynolds Number of from about 7,500 to about 75,000, the ratio of the weight per unit of time of flow of aqueous coagulant to the weight per unit of time of flow of polymer in the latex being from about 40:1 to about 250:1, and the essentially completely coagulated mixture from said tubular coagulation means is passed into the first of a series of two interconnected vessels or into a single vessel, said vessels being equipped with agitators to mix the contents thereof and containing aqueous coagulant, said tubular coagulation means terminating below the level of the aqueous coagulant in the first said vessel, the average residence time in said vessel or vessels being a total of from about 1 to about 15 minutes, the coagulated polymer from said vessel or vessels then being separated from the aqueous phase and recovered and dried.