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Abstract

Described is a method for treating wood, in which the wood is brought into contact with a mixture of liquid or water-soluble organic ammonium carboxylate and an active ingredient which repels invertebrates, characterized in that the organic ammonium carboxylate has the formula (1):

description='In-line Formulae' end='lead'[NR¹R²R³R⁴]⁺_n[R⁵(COO)_n]⁻ⁿ  (1),description='In-line Formulae' end='tail'

in which R¹, R² and R³ are selected from hydrogen, substituted and unsubstituted alkyls containing 1-6 carbon atoms, R⁴ is a substituted or unsubstituted alkyl containing 1-6 carbon atoms, R⁵ is hydrogen, a substituted or unsubstituted hydrocarbon containing 1-6 carbon atoms and n is an integral 1-6 and whereby wood-preservative active ingredient contains a chelating agent which repels invertebrate, which chelating agent is selected from an aminopolycarboxylic acid or a salt thereof, a hydroxy acid or a salt thereof or a phosphonate or a salt thereof or a mixture of chelating agents which belong to two of more groups thereof.

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First Claim