METHOD OF ISOLATION OF OIL-FILLED BUTADIENE-(α-METHYL)-STYRENE RUBBER Russian patent published in 1996 - IPC

FIELD: synthetic rubber production. SUBSTANCE: method involves mixing oil-filled synthetic butadiene-(a-methyl)-styrene rubber latex with coagulating agent and mineral acid. Coagulating agent is a mixture of sodium chloride with interaction product of protein with quaternary polymeric salt of poly-N,N-dimethyl-N,N-diallylammonium chloride at the following ratio of component in coagulating agent, wt.-%: sodium chloride 83-97; protein 2.8-12.0; poly-N, N-dimethyl-N, N-diallylammonium chloride - the rest. After isolation method involves serum recycle, crumb concentrating, its washing with water, squeezing, drying and other required technological stages. EFFECT: improved method of isolation. 2 tbl, 1 dwg