Process for the preparation of polymers based on conjugated...

Details Process for the preparation of polymers based on conjugated... Process for the preparation of polymers based on conjugated...

C - Chemistry, Metallurgy

08

F

402/448

C08F 236/04 (2006.01) C08F 4/48 (2006.01) C08F 236/10 (2006.01)

Patent

CA 1335468

A block-free polymer is prepared by anionically polymerizing at least two compounds selected from the groups consisting of butadiene, isoprene and styrene in an inert organic solvent in the presence of an organolithium compound as a catalyst and a cocatalyst of a glycol dialkyl ether: Image wherein R3 is hydrogen, methyl or ethyl, R1 and R2 are alkyl groups of different numbers of carbon atoms selected from the group consisting of methyl, ethyl, n- propyl, isopropyl, n-butyl, iso-butyl, sec-butyl and t- butyl, and the total number of carbon atoms in the alkyl groups ranges from 5 to 7.

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