Patent ID: 7790657
Filing Date: 2010-09-07
Classification: C09K

Abstract:
1. A process for preparing a solution of a borozirconate complex suitable for use in a cross-linking composition which comprises: (a) contacting a zirconium complex with a first alkanolamine at a ratio of 2 to 10 moles of the first alkanolamine per mole of zirconium in an alcohol to form a first mixture; (b) contacting the first mixture with water at a ratio of about 2 to 10 moles of water per mole of zirconium and with 0 to 1 moles of a hydroxyalkylene diamine per mole of zirconium to form a second mixture; (c) contacting the second mixture with a solution of a boron compound and a second alkanolamine in an alcohol, at a ratio of 1 to 4 moles of boron per mole of zirconium and 1 to 4 moles of the second alkanolamine per mole of boron and at a temperature of 25° C. to 90° C. for a period of time sufficient to stabilize the resulting borozirconate solution.