The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2004
Filed:
Oct. 16, 2002
Applicant:
Inventors:
Patrick Columba McGowan, Leeds, GB;
Margaret Dymphna McGowan, Leeds, GB;
Assignee:
The University of Leeds, Leeds, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/700 ; C07F 7/00 ; B01J 3/100 ;
U.S. Cl.
CPC ...
C07F 1/700 ; C07F 7/00 ; B01J 3/100 ;
Abstract
The invention provides a method for the preparation of a metallocene halide salt having at least one cyclopentadiene group substituted by a basic group, the method comprising reacting together a metal halide with a cyclopentadiene substituted by a basic group. In a preferred embodiment, the substituted cyclopentadiene is substituted with an amino group and the metal halide titanium tetrachloride. The invention provides a single step process for the preparation of metallocene derivatives which are useful in the formulation of medicaments and as polymerisation catalyst precursors.