Stora Enso Oyj

Metsaliitto Osuuskunta

Tikkurila Oyj

Pirjo Ahola

Pirkko Karhunen

Ilkka Kilpeläinen

Jorma Matikainen

Alistair W T King

Lasse Kyllönen

Ilkka Kilpelainen

Lasse Kyllonen

A method of treating wood with an organic phosphonate salt in a liquid phase to chemically modify its surface and thus provide protection from microorganisms. The organic phosphonate salts are of Formula III wherein R1 is a hydrogen radical or an alkyl or aryl radical having 1 to 20 carbon atoms and R2 is a cation selected from the group of NH4+, H+, Li+, Na+, K+, Rb+, Cs+, Fr+, Cu+, Ag+, substituted or unsubstituted ammonium, phosphonium, and sulfonium, methylpyrrolidinium, isothiazolium, isoxazolium, oxazolium, pyrrolium, thiophenium, pyridinium, pyridazinium, pyrimidinium, pyrazinium, imidazolium, pyrazolium, thiazolium, oxazolium, 1-ethyl-3-methylimidazolium , and triazolium, or a mixture thereof, said method preferably comprising using one or more salt compounds having formula III. Products comprising a raw material having been treated according to the method with one or more organic salts of formula III are also disclosed.

Protection of wood

Growing community of inventors

University of Helsinki, Finland

Pirjo Ahola