METHOD FOR BINDING OIL TO WOOD

摘要

The invention relates to a method for binding oil to wood and to a composition used in the method. According to the invention a wood product is contacted with a composition containing a solid anhydride, vegetable oil and alcohol. The treated wood product is dried and then subjected to a heat treatment at a temperature above 150 DEG C in order to bind the oil. The vegetable oil used preferably comprises at least one double bond, such as linseed oil, tall oil or rapeseed oil, and the anhydride used comprises maleic anhydride, succinic anhydride or phthalic anhydride. An auxiliary solvent, i.e. a lower aliphatic alcohol is used in order to help mixing the oil with the anhydride. By means of the invention the oil is so well bound to the wood that no oil seeps out of the wood even if it is heated above 70 DEG C. The oil-treated products can be used for outdoor furniture and boat boards.