Catalyst ligands, catalytic metal complexes and processes using and methods of making the same
AssigneeSymyx Technologies, Inc.
InventorsAnil Guram, Cheryl Lund, Howard W. Turner, Tetsuo Uno
Life of this patent
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Abstract
A new ligands that include a benzene ring in the backbone can be combined with a metal or metal precursor compound or formed into a metal-ligand complex catalyze a number of different chemical transformations, including olefin polymerization reactions. The ligands, complexes formed with the ligands and compositions including the ligands are useful catalysts, depending on the reaction.
Claims8
A process for polymerizing an olefin, diolefin or acetylenically unsaturated compound, comprising contacting said olefin, diolefin or acetylenically unsaturated compound to a complex that can be characterized by one of the following general formulas:
- wherein
- each R1, R2, R3, R4 R5 and R6 is independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, heteroalkyl, heterocycloalkyl, substituted heterocycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, alkoxy, aryloxy, aryloxy, silyl, boryl, phosphino, amino, thio, seleno, and combinations thereof;
- optionally, R1 and R2 are joined together in a ring structure and/or R4 and R5 are joined together in ring structure;
- G is either nitrogen of oxygen and a is 0 or 1 depending on G;
- b is 0, 1, 2, 3 or 4;
- M is a transition metal selected from the group consisting of Group 3, 4, 5, 6, 7, 8, 9 and 10 of the Periodic Table of Elements;
- L is independently each occurrence, a ligand;
- n is a number 0, 1, 2, 3, 4, and 5;
- and
- m is 1, 2, 3 or 4.
Dependencies are inferred from the claim text.