METHOD OF SEPARATING EMULSION POLYMERISATION SYNTHETIC RUBBER FROM LATEX Russian patent published in 2013 - IPC C08C1/15 

FIELD: chemistry.

SUBSTANCE: method of separating emulsion polymerisation rubber involves coagulation of rubber latex in an acidic medium in the presence of a coagulant - polydiallyl dimethylammonium chloride. An aqueous solution of the coagulant with concentration of 4.3-4.8% is premixed with serum in a flow mixer in ratio of coagulant to serum of (0.115-0.150):(30-45) m³/h and then fed into a coagulation apparatus from the bottom simultaneously with sulphuric acid solution. Latex is fed into the coagulation apparatus from the top in ratio of latex to serum of 1:(2.4-2.7). Coagulation is carried out in an acidic medium at pH 5.4-6.3 and temperature 50-60°C. After coagulation, rubber crumbs flow under gravity into a maturing tank, for pressing, drying and briquetting.

EFFECT: invention simplifies the method and improves the quality of the obtained rubber.

3 cl, 1 dwg, 1 tbl, 6 ex