A process for treating wood involving impregnation of the wood with a preservative followed by the heat-fixation of the preservative in the wood using a pre-heated aqueous heat tansfer fluid to effect the heat fixation of the preservative. The process particularly relates to steps which are taken to reduce the level of any contamination of the aqueous heat transfer fluid resulting from any wood extractives, any unfixed preservative and/or any particulate matter (i.e. "sludge") that may be present in the fluid. The contamination is preferably reduced by incorporating in the heat transfer fluid an oxidant which will preferentially oxidize any wood extractives resulting from the contact of the treated wood with the fluid without any significant reaction occurring between the oxidant and the preservative. Useful oxidants include inorganic chlorate salts such as sodium chlorate.
申请公布号
WO9731724(A1)
申请公布日期
1997.09.04
申请号
WO1997US03076
申请日期
1997.02.27
申请人
CHEMICAL SPECIALTIES, INC.
发明人
BERGERVOET, ANTHONY, J.;MARCINKO, JAMES, L.;WALCHESKI, PAUL, JOSEPH