C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/375, 260/426
C08F 2/02 (2006.01) C07F 7/00 (2006.01) C07F 7/10 (2006.01) C07F 7/28 (2006.01) C07F 9/50 (2006.01) C07F 17/00 (2006.01) C08F 4/42 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01) C08F 210/16 (2006.01) C08L 23/08 (2006.01) C08L 25/06 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 110/02 (2006.01) C08F 110/14 (2006.01) C08F 210/02 (2006.01)
Patent
CA 2024333
Metal coordination complexes comprising a metal of Group 3 (except Se), 4-10 or the lanthanide series and a delocalized n-bonded moiety have said moiety substituted with a constrain-inducing moiety which reduces the angle at the metal between the centroid of said n-bonded moiety and at least one remaining substituent. Metal coordiantion complexes comprising a metal of Group 3 (except Se), 4-10 or the Lanthanide Series and a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to an adjacent convalent moiety and held in association with the (substituted) cyclopentadienyl moiety. Amidosilane and amidoalkanediyl compounds covalent moieties are particularly preferred. The complexes of the invention form addition polymerization catalysts with activing cocatalysts such as Lewis acids, ammonium salts, oxidizing agents and, especially, aluminum compounds, particularly aluminum trialkyls. Novel polymers, including E1pE resins and pseudo-random copolymers, can be obtained using the catalysts of the invention.
Knight George W.
Lai Shih-Yaw
Nickias Peter N.
Rosen Robert K.
Schmidt Gregory F.
Smart & Biggar
The Dow Chemical Company
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