SYNTHETIC RUBBER MANUFACTURE PROCESS Russian patent published in 2005 - IPC

FIELD: rubber industry.

SUBSTANCE: invention relates to technology of manufacturing solvent-polymerization rubbers used in production of tires and mechanical rubber article pieces. Synthetic rubbers are, in particular, manufactured by solvent polymerization of monomers, which process comprises polymerization stage, deactivation of catalyst, water flushing to remove the rests of catalysts and stabilization of polymer with antioxidant, homogenization of polymer solution, emulsification of homogenized polymer solution with hot circulation water and live steam treatment, water-mediated degassing in two or more degassing systems, concentration and drying of rubber in worm-squeezing drying assemblies or air driers. More specifically, polymer solution from homogenizers is conveyed into first common collector and introduced into preliminary emulsification with hot circulation water supplied in proportion of 5 to 25% of the volume of polymer solution into pump suction line, after which pressure is raised to 1.0-1.3 MPa, polymer solution is conveyed into second common collector and subjected to final emulsification with hot circulation water and live steam treatment before being degassed. Excess hot circulation water removed from rubber crumb concentrators is freed of fine ribber crumb and reused in the process.

EFFECT: achieved energy conservation, simplified process control, and reduced specific consumption of raw materials.

4 cl, 1 dwg, 8 ex