Patent ID: 7074459

Claim:
A method for preserving wood which comprises contacting the wood with a wood preserving amount of a complex of a cationic biocide and an anionic biocide, wherein said cationic biocide contains a functionality selected from the group consisting of amidines, azoles, guanidines, biguanides, phosphoniums and sulfoniums, and wherein said anionic biocide contains a functionality selected from the group consisting of phenolics, saturated carboxylates, unsaturated carboxylates, substituted carboxylate, organomerecaptides, tetrathiocarbonates, cyanodithioimidocarbamates, dithiodialkylcarbamates, anionic oxides of transition metals, aminocarboxylic acids, amninoorganophosphonic acids, monoalkylphosphates, dialkylphosphates, and substituted or unsubstituted 2-hydroxy-2,4,6-cyoloheptatrianone.