Treatment of wood and wood-based materials
AssigneeImperial College of Science, Technology and Medicine
InventorsRichard J. Murphy, David J. Dickinson, Philip Turner
Life of this patent
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Abstract
A method of treating moisture containing wood including the step of exposing the timber or wood to a vaporous azeotrope of an organ-boron component and an alcohol at a temperature below the alcohol's boiling point. The organ-boron compound hydrolyses with the moisture to form boric acid in the timber or board.
Claims21
A method of preserving timber or wood based board comprising exposing said timber or board having a moisture content up to 28% by weight to a vapor mixture comprised of a positive azeotrope of an organo-boron compound and an alcohol at a temperature greater than or equal to the boiling point of the mixture, but below the boiling point of the alcohol, wherein said organo-boron compound hydrolyses to form a boric acid reaction product in said timber or board.
Timber or wood-based board, treated by a method as claimed in claim
A method of preserving timber or wood based board comprising partially drying said timber or board having a moisture content up to 28% by weight, exposing said partially dried timber or board to a vapor mixture comprised of a positive azeotrope of an organo-boron compound and an alcohol at a temperature greater than or equal to the boiling point of the mixture, but below the boiling point of the alcohol, wherein said organo-boron compound hydrolyses to form a boric acid reaction product in said timber or board.
A method of preserving timber or wood based board comprising exposing said timber or board to a vaporized azeotrope comprised of trimethyl borate and methanol at a temperature greater than or equal to the boiling point of the azeotrope but below the boiling point of the methanol, wherein said trimethyl borate hydrolyses to form boric acid in said timber or board and methanol.
Dependencies are inferred from the claim text.