Elastomers are plasticized with a polymerizable monomer, in homogeneous admixture therewith, by adding the monomer to a latex of the elastomer, free of polymerization initiator, followed by coagulation of the monomer and polymer solids. The coagulated solids recovered from the latex may be compounded with a polymerization initiator for the monomer and a vulcanizing agent for the polymer and, optionally, an inorganic filler, and shaped into the desired product form. Polymerization of the polymer and vulcanization of the elastomeric polymer are initiated after shaping.
This is a division of application Ser. No. 722,374, filed Apr. 12, 1985, U.S. Pat. No. 4,606,877, which in turn is a division of U.S. application Ser. No. 626,711 filed July 2, 1984, now U.S. Pat. No. 4,530,944 which is in turn a division of U.S. application Ser. No. 422,278 filed Sept. 23, 1982, now U.S. Pat. No. 4,485,198.
