METHOD OF PRODUCING CHLORINATED 1,2-POLYBUTADIENES Russian patent published in 2012 - IPC C08C19/00 C08C19/12 C08C19/14 C08F8/00 C08F8/02 C08F8/20 

FIELD: chemistry.

SUBSTANCE: method involves reacting a polymer solution in an organic solvent with a chlorinating agent. The chlorinating agent used is aqueous sodium hypochlorite with concentration 0.05-0.2 mol/l. Reaction takes place in molar ratio 1,2-polybutadiene: sodium hypochlorite equal to 1:1-2.5 at temperature from minus 10 to 30°C for 1-5 hours at pH of the reaction mixture of 4-6, which is maintained using a buffer system consisting of a mixture of phosphoric acid and sodium hydrophosphate in form of a 0.3 M aqueous solution.

EFFECT: high safety of the chlorination process owing to use sodium hypochlorite.

2 cl, 1 tbl, 22 ex