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Stevens James C, Timmers Francis J, Wilson David R, Schmidt Gregory F, Nickias Peter N, Rosen Robert K, Knight George W, Lai Shih Yaw: Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith.. Dow Chemical, March 13, 1991: EP0416815-A2 (544 worldwide citation)

Metal coordination complexes comprising a metal of Group 3 (except Sc), 4-10 or the lanthanide series and a delocalized PI -bonded moiety have said moiety substituted with a constrain-inducing moiety which reduces the angle at the metal between the centroid of said PI -bonded moiety and at least one ...


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Stevens James C, Nickias Peter N, Timmers Francis J, Rosen Robert K, Wilson David R, Knight George W, Schmidt Gregory F, Lai Shih Yaw: Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith. Dow Chemical, March 26, 1997: EP0764653-A2 (8 worldwide citation)

Hafnium or zirconium coordination complexes comprise a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to an adjacent amidosilane moiety and held in association with the (substituted) cyclopentadienyl moiety. These complexes f ...


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Devries Robert A, Schmidt Gregory F, Frick Hughie R, Mendoza Abel: Process for preparing vinylically-unsaturated compounds.. Dow Chemical, September 30, 1992: EP0506314-A2 (3 worldwide citation)

Vinylically-unsaturated compounds are prepared by reacting a halogenated organic compound with a vinylically-unsaturated precursor compound in the presence of (a) a homogeneous zerovalent palladium catalyst complex, (b) a hydrogen halide acceptor and (c) a diluent, wherein the diluent is water or an ...


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Schmidt Gregory F, Campbell Richard E Jr, Hucul Dennis A: Preparation of polyhydrocarbylaluminoxanes.. Dow Chemical, October 25, 1989: EP0338044-A1 (1 worldwide citation)

An improved process for the preparation of aluminoxanes comprising contacting an aluminoxane precursor such as a hydrocarbyl substituted aluminum compound with a porous organic or inorganic aqueous imbiber material containing water sorbed or imbibed therein.


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Campbell Richard E Jr, Schmidt Gregory F, Hucul Dennis A: Preparation de polyhydrocarbylaluminoxanes, Preparation of polyhydrocarbylaluminoxanes. The Dow Chemical Company, SMART & BIGGAR, July 7, 1992: CA1304746

ABSTRACT An improved process for the preparation ofaluminoxanes comprising contacting an aluminoxaneprecursor such as a hydrocarbyl substituted aluminumcompound with a porous organic or inorganic aqueousimbiber material containing water sorbed or imbibedtherein.36,135-F