Particulate elastomeric materials and method

In the preparation of free flowing particles of elastomeric polymers formed of monomers which are polymerizable in aqueous medium in the presence of an emulsifying agent to form a latex, the steps of coagulating the latex by control of one or more of the conditions of agitation, pH, temperature, time and flocculant additions to coagulate the formed elastomer into particles, separating the coagulated particles from the aqueous medium, washing the separated coagulated particles, dewatering the separated particles to a moisture content of less than 65%, screening the coagulated particles to subdivide the particles into an undersize of less than 0.5 mm and an oversize of more than 5 mm, and a product within the range of 0.5 to 5 millimeters in cross-section, and then drying and cooling the separated product particles while in a fluidized state in a continuous sequence of stages initially with hot gases for the removal of moisture and then with cooling gases to reduce the dried particles to a temperature below 120.degree. C. and a moisture content below 3% by weight to minimize sticking, and admixing a solid partitioning agent with the dried particles in an amount within the range of 1-10% by weight to coat the surfaces of the dried particles to obstruct agglomeration between the dried particles.