Lonza Inc.

Shilan Shen

Scott Brian Harvey

Leigh E Walker

Samuel Ellsworth Shull

Applicants have discovered that amine oxides enhance the uniform distribution and penetration of wood preservatives into wood substrates, minimize leaching of the wood preservatives, and improve the weatherability of the wood substrate. The present invention provides a method for enhancing the uniform distribution and penetration of at least one wood preservative into a wood substrate by applying a preservative composition to the wood substrate. The preservative composition comprises a wood distribution and penetration enhancing agent, which includes an amine oxide, and the wood preservatives. Another embodiment of the present invention is a method for enhancing the uniform distribution and penetration of one or more wood preservatives by applying the wood preservatives to the wood substrate and then applying the aforementioned wood distribution and penetration enhancing agent to the wood substrate. Alternatively, the wood distribution and penetration enhancing agent may be applied prior to application of the wood preservatives or both may be applied concurrently. Yet another embodiment is a preservative composition comprising a wood distribution and penetration enhancing agent and at least one wood preservative. Preferably, the composition comprises a uniform distribution and penetration enhancing effective amount of the wood distribution and penetration enhancing agent and a wood preserving effective amount of the wood preservative.

Methods for enhancing penetration of wood preservatives

A process for manufacturing 1-hydroxyalkylidene-1,1-diphosphonic Acid (HADP) by introducing phosphorus trihalide (PX.sub.3) into a reactor containing aqueous acid of the formula RCOOH at a temperature of 60-200.degree. C. and a pressure of 15-150 psig. Water is added to hydrolyze the intermediate formed to obtain HADP.

Process for manufacturing 1-hydroxyalkylidene-1,1-diphosphonic acid

A semi-batch process for the manufacture of polyglycerol esters by direct fatty acid esterification of a polyglycerol. Molten fatty acid is fed slowly into polyglycerol at a rate which maintains the reaction mixture substantially homogeneous. Improved quality of the resultant polyglycerol esters and shorter reaction cycles are thereby realized.

Growing community of inventors

High Bridge, NJ, United States of America

Shilan Shen