Hardening of hydrophilic colloids with imidazolium and triazine combinations

US5601971A · kind A · utility

Assignee

• Sterling Diagnostic Imaging, Inc. · US

Inventors

• Ludovic Fodor · Hendersonville, US
• Richard R. Jones · Henderson, US
• Reinhold R uger · Nuremberg, DE
• Timothy D. Weatherill · Hendersonville, US
• Rolf Weberg · East Aurora, US

Key dates

• Filing date: Mar 8, 1995
• Grant date: Feb 11, 1997
• Expiry date: Mar 8, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/136
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An improved method of hardening a hydrophilic colloid is detailed. The hardening results in a stronger matrix and less water pickup. These and other advantages are obtained by hardening with a combination of at least one hardener chosen from Formula I either alone or in combination with at least one hardener chosen from Formula II: ##STR1## The substituents are defined.