Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2005-10-11
2005-10-11
Lorengo, J. A. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S150000, C502S152000, C502S162000, C502S167000, C502S155000, C546S002000, C526S113000
Reexamination Certificate
active
06953764
ABSTRACT:
Group 4 metal complexes useful as addition polymerization catalysts of the formula:whereinG1is a group containing from 1 to 40 atoms not counting hydrogen;T is a divalent bridging group of from 10 to 30 atoms not counting hydrogen, selected from mono- or di-aryl-substituted methylene or silylene groups or mono- or di-heteroaryl-substituted methylene or silylene groups, wherein at least one such aryl- or heteroaryl-substituent is substituted in one or both ortho-positions with a secondary or tertiary alkyl-group, a secondary or tertiary heteroalkyl group, a cycloalkyl group, or a heterocycloalkyl group,G2is a C6-20heteroaryl group containing Lewis base functionality,M is the Group 4 metal,X″″ is an anionic, neutral or dianionic ligand group,x″″ is a number from 0 to 5, andbonds, optional bonds and electron donative interactions are represented by lines, dotted lines and arrows respectively.
REFERENCES:
patent: 6103657 (2000-08-01), Murray
patent: 6258903 (2001-07-01), Mawson et al.
patent: 6365539 (2002-04-01), Ponasik et al.
patent: 6566462 (2003-05-01), Murray et al.
patent: 6653417 (2003-11-01), Peterson
patent: 6759493 (2004-07-01), Nagy et al.
patent: 6767975 (2004-07-01), Liu
patent: 6790918 (2004-09-01), Nagy et al.
patent: 2002/0142912 (2002-10-01), Boussie et al.
patent: WO 2000 020377 (2000-04-01), None
patent: WO 2002 038628 (2002-12-01), None
patent: WO 2004/024740 (2004-03-01), None
Boone Harold
Frazier Kevin A.
Stevens James C.
Vosejpka Paul C.
Brown Jennine
Dow Global Technologies Inc.
Lorengo J. A.
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