Synthesis of multiblock polymers using group iia and iib...

Details Synthesis of multiblock polymers using group iia and iib... Synthesis of multiblock polymers using group iia and iib...

C - Chemistry, Metallurgy

08

F

C08F 297/02 (2006.01) C08F 297/04 (2006.01)

Patent

CA 2219574

The invention is a practical process for anionically synthesizing multiblock polymers containing a plurality of blocks formed from polar and/or non-polar monomers by using a cyclic organometallic compound initiator that comprises a divalent metal atom and an organic moiety contained in a ring, preferably a cycloorganomagnesium initiator. Activation of the ring metallic atom results in anionic polymerization of the monomers by addition into the initiator ring at the bonds between the metallic atom and its two adjacent carbon atoms, the metallic atom acting as a bridge between the two living ends of the propagating chain. The active chain ends can be coupled or terminated.

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