Coagulation of latex

An improved process for the coagulation of an aqueous latex of a rubbery C.sub.4 -C.sub.6 conjugated diolefin-containing polymer which comprises contacting a stream of said latex with an aqueous stream of a coagulant solution and separating, recovering and drying the coagulated polymer, characterized in that the latex and coagulant solution are contacted in a tubular coagulation means at a temperature of from about 50.degree. to about 80.degree. C. for a time of from about 1 to about 30 seconds, a Reynolds Number of from about 7,000 to about 70,000 and a flow ratio, by weight, of coagulant solution to the polymer content of the latex of from about 150:1 to about 750:1, said tubular coagulation means being disposed at an angle of from about 20.degree. up to about 90.degree. to the horizontal plane and being of narrow diameter elongate form, having a coagulant solution feed line attached at or close to one terminal point, having a latex feed line attached at or close to said terminal point to one or more lines located essentially centrally within said tubular coagulation means, said one or more lines being of not more than about 25% of the cross-sectional area of the tubular coagulation means and terminating within said tubular coagulation means allowing the latex to pass into the coagulant solution at a point downstream of but closely adjacent to the point at which the coagulant solution feed line is attached, said tubular coagulation means terminating in essentially unrestricted form above and feeding into one end of a conduit inclined at a small angle from the horizontal sufficient to allow the coagulated mixture to flow down said conduit to the opposite exit end thereof where said conduit is equipped, at a distance from the end thereof of not more than 1.5 times the maximum diameter of said tubular coagulation means, with an impingement plate which the coagulated mixture contacts, following which the coagulated polymer is separated, recovered and dried.