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:
Apr. 09, 2002
Filed:
Mar. 06, 2000
Applicant:
Inventors:
Robert B. Wilson Jr., Palo Alto, CA (US);
Gary A. Koolpe, San Jose, CA (US);
Assignee:
SRI International, Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/700 ; C07F 7/00 ; B01J 3/100 ; C08F 4/44 ;
U.S. Cl.
CPC ...
C07F 1/700 ; C07F 7/00 ; B01J 3/100 ; C08F 4/44 ;
Abstract
A method is provided for synthesizing metallocene compounds useful as polymerization catalysts and the like. The method involves (a) preparation of an amino alcohol-derived ligand by reacting a silane reactant with an amino alcohol in the presence of base, followed by (b) metallation of the ligand so provided. The metallocenes may be provided in chiral form when the amino alcohol contains an asymmetric center, and are thus useful in catalyzing stereospecific polymerization and other stereospecific bond formation reactions.