Kemira Oyj

Oy Granula Ab Ltd.

Jari-Jukka Kukkonen

Timo H Nissinen

Thomas Ahlnäs

Timo Härmä

Aksela Reijo

Timo Harma

Thomas Ahlnaes

According to the invention, wood material is treated with a composition comprising at least one C1-C7 monocarboxylic acid or a salt, or mixtures thereof, and at least one chelating agent. These compounds are dissolved in a liquid aqueous vehicle. In this manner, the treated wood is endowed with excellent resistance against detrimental environmental effects.

Composition and method for treating wood

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):[NRRRR][R(COO)]&#x2003;&#x2003;(1),in which R, Rand Rare selected from hydrogen, substituted and unsubstituted alkyls containing 1-6 carbon atoms, Ris a substituted or unsubstituted alkyl containing 1-6 carbon atoms, Ris 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.

Method for treating wood

The invention relates to a reducing agent composition for use in the catalytic reduction process of nitrogen oxides in exhaust gases, the composition containing 20-40 w % of urea, 19-40 w % of ammonium formate, and water.

Reducing Agent Composition

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Oulu, Finland

Jari-Jukka Kukkonen