| 摘要 |
PROBLEM TO BE SOLVED: To achieve stable bacteria preventive and mildewproof performance for a long period by impregnating a timber with a treating solution containing specific silicon alkoxide and bacteria preventive and mildewproof organic silicon compound including hydrolyzable alkoxysilyl group, hydrolyzing or thermally decomposing the organic silicon compound, and polycondensing it. SOLUTION: A humidity control timer is immersed in mixed treating solution of adding bacteria preventive and mildewproof organic silicon compound containing hydrolyzable alkoxysilyl group of a formula II (where R<1> denotes 11-22C aliphatic monovalent hydrocarbon group, R<2> denotes 1-4C alkyl group, X denotes halogen atom, and b denotes number of 0 or 1) to silicon alkoxide solution represented by a formula I (CH3 )a Sii (OR)4a (where R denotes 1-12C nonsubstituted or substituted monovalent hydrocarbon group, and a denotes 0, 1, 2 or 3). Then, compound of silicon alkoxide is hydrolyzed or thermally decomposed, polycondensed, and added with bacteria preventive and mildewproof organic silicon compound. Bacteria preventive and mildewproof components are not extracted or dissolved or removed, adhesive and coating performance at the time of working is not disturbed, but rotting resistance can be given.
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