High stability porous zirconium oxide spherules

US5205929A · kind A · utility

Assignee

• Regents of the University of Minnesota · US

Inventors

• Peter W. Carr · Minneapolis, US
• Eric F. Funkenbusch · White Bear Lake, US
• Martin P. Rigney · Roseville, US
• Patrick L. Coleman · Minneapolis, US
• Douglas A. Hanggi · Windom, US
• Wes A. Schafer · Minneapolis, US

Key dates

• Filing date: May 28, 1992
• Grant date: Apr 27, 1993
• Expiry date: May 28, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2030/525
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention provides a stable stationary phase for chromatography which comprises porous ZrO.sub.2 spherules coated with a cross-linked polymer coating wherein said coated spherules have a pore size from about 20-500 .ANG. and a particle diameter range of about 0.5-500 microns, and are stable in basic media to pHs of up to about 14.