C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/1, 252/117,
C08F 4/50 (2006.01) C08F 2/06 (2006.01) C08F 36/06 (2006.01) C08F 297/04 (2006.01)
Patent
CA 1166400
ABSTRACT OF THE DISCLOSURE A composition useful as a catalyst in solution polymeriza- tion comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium com- pound. (2) and (3) may be used as a complex with (1). The com- positions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thia- tanes and lactams. The catalyst composition can produce poly- butadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
353683
Aggarwal Sundar L.
Bingham Robert E.
Durst Richard R.
Fabris Hubert J.
Hargis Ivan G.
Omnova Solutions Inc.
Smart & Biggar
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