METHOD OF PRODUCING POLYMERS CONTAINING DICHLOROCYCLOPROPANE GROUPS Russian patent published in 2012 - IPC C08C19/18 C08F8/24 

FIELD: chemistry.

SUBSTANCE: invention relates to high-molecular weight compounds, particularly obtaining polymer products containing dichlorocyclopropane macromolecules. Described is a method of producing polymers by reacting 1,2-polybutadiene with chloroform and aqueous solution of an alkali metal in the presence of a quaternary ammonium salt as a phase-transfer catalyst. The starting polymer used is syndiotactic 1,2-polybutadiene with syndiotacticity ranging from 50 to 90%, number-average molecular weight M_n from 30000 to 75000, content of 1,2- and 1,4-polymerisation links in the macromolecules of 80-95 mol % and 5-20 mol %, respectively.

EFFECT: obtaining polymer products with degree of functionalisation (content of dichlorocyclopropane groups) of up to 98%, content of (a+b) links from 80 to 95 mol % and molecular weight of more than 30000 amu.

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