FILLED BUTADIENE-STYRENE RUBBER PRODUCTION PROCESS Russian patent published in 2006 - IPC C08C1/14 C08F2/22 C08F236/06 

FIELD: rubber industry.

SUBSTANCE: invention relates to production of butadiene-styrene rubbers via emulsion butadiene-styrene copolymerization process, in particular to isolating rubbers from their latexes in presence of radical initiators. Process is stopped by adding oil filler and antioxidant, after which follows degassing and isolation of rubber from latex by coagulation method. Process is distinguished by that, as filler and antioxidant, fiber/oil/antioxidant composite is used, which is prepared by preliminarily mixing divided unwound fibers with hydrocarbon solution of oil PN-6 containing amine- or phenol-type antioxidant, grinding resulting composite, dispersing it in aqueous phase containing surfactants, and introducing it into rubber in amounts of 2-6% oil and 0.1-1.5% fibrous filler based on the weight of rubber.

EFFECT: reduced loss of rubber, reduced environmental pollution, and improved physico-mechanical characteristics of vulcanizates.

3 tbl, 11 ex