Treatment of wood and wood-based materials

Abstract From the Canadian patent

A method of treating timber or wood based board comprising exposing said timber or board to vapour derived from a mixture comprising an organo-boron compound and a second compound, said compounds being capable of forming a positive azeotrope if mixed in suitable molar proportions said organo-boron compound hydrolysing to boric acid reaction product in said timber or board and other reaction product, the vapour exposure being effected at a temperature which, under the treatment conditions selected is greater, than or equal to the boiling point of the mixture used but, below the boiling point of said other reaction product.