Patent ID: 8044001
Filing Date: 2011-10-25
Classification: C09K,Y10S

Abstract:
1. A process to prepare a solid zirconium cross-linking agent suitable for use as a cross-linking agent comprising: (a) contacting a zirconium complex with a hydroxyalkylated ethylenediamine in an alcohol solvent to produce a mixture wherein the zirconium complex is a tetraalkyl zirconate and the mole ratio of hydroxyalkylated ethylenediamine to zirconium is in the range of 0.5:1 to 1.5:1; (b) adding water to the mixture in an amount of 0.1 to 5.2 moles of water per mole of zirconium; (c) maintaining the product of step (b) for a sufficient period of time for the product to reach equilibrium; and (d) removing the alcohol from the product of step (c) to form a granular solid zirconium cross-linking agent.