Initiator systems for polymerization of 1,3-dienes or...

Details Initiator systems for polymerization of 1,3-dienes or... Initiator systems for polymerization of 1,3-dienes or...

C - Chemistry, Metallurgy

08

F

252/123, 402/448

C08F 4/48 (2006.01) C08F 4/00 (2006.01) C08F 4/44 (2006.01) C08F 36/04 (2006.01)

Patent

CA 1287616

Abstract Of The Disclosure A process and a catalyst system is disclosed herein for preparation of medium to high vinyl (co)polymers containing a 1,2-microstructure of between 30 and about 90 percent. The catalyst system which is employed in the production of the (co)polymer is an oligomeric oxolanyl alkane modifier and anionic initiator selected from (1) Na(R)3Mg or (2) Na(R)3Mg and an organolithium compound or (3) K(R)3Mg and an organolithium compound.

528739

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