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    • 5. 发明专利
    • WOOD PRESERVATIVE
    • JPH01202404A
    • 1989-08-15
    • JP31398988
    • 1988-12-14
    • WOLMAN GMBH DR
    • GOETTSCHE REIMERMARX HANS NORBERT
    • B27K3/34A01N55/02B27K3/52
    • PURPOSE: To eliminate a precipitation with a stable water solution by additionally incorporating a polyamine in a wood preservative containing a zinc compound and an aliphatic carboxylic acid as main bodies and no copper compound. CONSTITUTION: A water soluble wood preservative is constituted by incorporating a zinc compound, an aliphatic carboxylic acid and a polyamine as main bodies. The advantageous polyamine includes, for example, an aliphatic polyamine, alkyleneamine having 3 to 9 carbon atoms and 2 to 4 nitrogen atoms and the like. The zinc compound may be soluble or insoluble in water such as, for example, metal zinc, zinc oxide, zinc sulfate, zinc hydroxide. The carboxylic acid includes, for example, 5-20C carboxylic acid such as, for example, a hexanoic acid, heptanoic acid and the like. These acids are bonded to zinc to form a water insoluble salt. This salt is dissolved in an alkali medium by a complex salt forming action of the amine. The salt formation is improved by adding a complex salt forming carboxylic acid such as, for example, a nitrile triacetic acid to 3-6C hydroxycarboxylic acid, lactic acid, tartaric acid or citric acid.