Transition metal complexes and polymerization catalysts

Details Transition metal complexes and polymerization catalysts Transition metal complexes and polymerization catalysts

2007-10-09

2007-10-09

Lu, Caixia (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S161000, C502S103000, C502S132000, C502S160000, C502S171000, C556S021000, C556S057000

Reexamination Certificate

active

10532048

ABSTRACT:
There are provided a transition metal complex of formula (1):wherein M represents an element of Group 6 of Periodic Table of Elements, A and A′ are the same or different, and represent a substituted or unsubstituted C1-10 alkylene group or the like, Y represents a substituted or unsubstituted C1-10 alkyl group, or the like, X1and X2are the same or different, and represent a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-10 alkyl group, or an amino group disubstituted with C1-20 hydrocarbon, and n1is an integer of 0 to 3, an olefin polymerization catalyst obtained by combining a transition metal complex with an organic aluminum or aluminoxane, a polymerization catalyst further containing a boron compound, and a process for producing olefin polymer using the polymerization catalyst.

REFERENCES:
patent: 4115318 (1978-09-01), Speca
patent: 5585510 (1996-12-01), Mazany
patent: 10-218922 (1998-08-01), None
patent: WO-87/02370 (1987-04-01), None

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