Document Type

Patent

Patent Number

US Patent 5,777,120

Patent agency

United States Patent and Trademark Office

Publication Date

7-7-1998

Assignee

University of Iowa Research Foundation (Iowa City, IA, US)

Application Number

08/818,297

Date Filed

1997-03-14

Total Pages

8 pages

Abstract

Aluminum amidinate compounds of the formula ##STR1## wherein R, R2, and R3 are selected from the group consisting of C1 to C50 alkyl, aryl, and silyl groups, X is an anionic ligand, preferably a hydrocarbyl, n=0 or 1, L, if present, is a labile Lewis base ligand, preferably having an oxygen, nitrogen, or phosphorus atom donating a lone pair of electrons to the aluminum center, and A- is an anion which balances the charge of the aluminum cation and only weakly if at all coordinates to the aluminum center and preferably contains boron, are disclosed. These compounds are useful as olefin polymerization catalysts without the need for cocatalysts or transition metal species.

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URL

https://ir.uiowa.edu/patents/188