METHOD FOR PRODUCTION OF LATEX OF SYNTHETIC CAOUTCHOUC Russian patent published in 1997 - IPC

FIELD: production of latex of synthetic caoutchouc. SUBSTANCE: method is carried out by emulsion polymerization of diene monomers or by their copolymerization with olefin monomers, the process takes place in the presence of radical initiator, emulsifying agent and dispersing agent. Sodium or potassium salts of undisproportionated tallow oil or their mixture with sodium or potassium salts of undisproportionated colophony or sodium or potassium salts of saturated or unsaturated acids of fatty acids are used as mentioned above emulsifying agent, ratio of salts of tallow oil and colophony or acids of fatty series is 4:1-1:4. Sodium or potassium salt of 4,4'-azo-bis(4-cyanovaleric) acid is used as mentioned above initiator, its quantity being 0.03-0.8 mass parts per 100 mass parts of monomers. Polymerization temperature is 35-80 C. EFFECT: improved efficiency. 1 tbl