Akzo Nobel N.v.

John P Bell

Stanley B Mirviss

Robert F Farmer

Andress K Doyle

Douglas M Lucas

William John Parr

James F Gadberyy

Biocidal preservatives for use especially in preventing rotting and deterioration of wood include quaternary ammonium compounds which preferably have a fatty aliphatic substituent on the quaternary nitrogen atom. Especially preferred are cocoalkyl substituents. Other substituents can include alkoxy groups, arenes, and heterocyclic groups with or without ring substitutions, for example. The quaternary ammonium compound can also contain an amine nitrogen and can be complexed with copper.

Biocidal preservatives

Liquid wood preservation formulations comprise a liquid solvent and a complex dissolved therein which is formed by the reaction of a compound containing a copper cation and an alkoxylated diamine, preferably containing at least one fatty alkyl group, such as an alkoxylated diamine wherein the alkoxylation is either ethoxylation or propoxylation.

Wood preservation formulation comprising complex of a copper cation and

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Ossining, NY, United States of America

John P Bell