Covalently reactive particles incorporated in a continous porous matrix

US5993935A · kind A · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Jerald K. Rasmussen · Woodville, US
• Steven M. Heilmann · Afton, US
• Larry R. Krepski · White Bear Lake, US
• Patrick L. Coleman · Minneapolis, US
• Dean S. Milbrath · Stillwater, US
• Margaret M. Walker · Apple Valley, US
• Donald F. Hagen · Woodbury, US
• Paul E. Hansen · Watsonville, US
• John C. Campbell · Missouri City, US

Key dates

• Filing date: Oct 11, 1991
• Grant date: Nov 30, 1999
• Expiry date: Oct 11, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249939
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A composite article is provided having covalently reactive particles incorporated in a continuous, porous matrix. The reactive particles have surfaces of covalently reactive functional groups capable of directly forming covalent chemical bonds with ligands without need for an intermediate activation step. An adduct composite article is also provided comprising a continuous, porous matrix and derivatized particles dispersed therein. The derivatized particles comprise a direct, covalent reaction product of ligand with the covalently reactive particles. Methods of making and using the composite articles and adduct composite articles are also provided. Preferred covalently reactive functional groups are azlactone-functional groups of the formula: ##STR1## wherein: R.sup.1 and R.sup.2 independently can be an alkyl group having 1 to 14 carbon atoms, a cycloalkyl group having 3 to 14 carbon atoms, an aryl group having 5 to 12 ring atoms, an arenyl group having 6 to 26 carbon and 0 to 3 S, N, and nonperoxidic O heteroatoms, or R.sup.1 and R.sup.2 taken together with the carbon to which they are joined can form a carbocyclic ring containing 4 to 12 ring atoms, and PA1 n is an integer 0 or 1…