Water repellent compositions for wood preservatives

Abstract

Water-based wax emulsions, optionally for use in conjunction with alkaline copper and / or quaternary ammonium based preservatives systems, are described. These emulsions are comprised of natural or synthetic wax, nonionic surfactants having HL B values greater than 11, anionic surfactants, and water. Certain emulsion compositions as described in this specification posses the unique property of maintaining emulsion stability in wood preservatives during extended use in typical wood treatment processes. Water-repellant wood treated with the wax emulsions are described. A method of treating wood, comprising providing wood and treating the wood with the wax emulsion under conditions effective to increase its water repellency is also disclosed.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of Ser. No. 10 / 438,273, Filed May 14, 2003, now pending, which claims the benefit of U.S. Provisional Application Ser. No. 60 / 380,434, filed May 14, 2002. Both applications referred to above are hereby incorporated herein by reference in their entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

[0002] Not Applicable. BACKGROUND

[0003] This disclosure relates generally to emulsion water repellent compositions, including such compositions for use in conjunction with wood preservatives containing, for example, cupric-ammonia, cupric-amine, cupric-ammonia-amine complexes, quaternary ammonium compounds, or other systems. For example, the emulsion water repellent compositions are useful in Alkaline Copper-Quaternary ammonium (ACQ) preservative systems

[0004] The following characterizations of certain patents and publications are provided for the convenience of the reader. No admission is...