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    • 6. 发明授权
    • Process of treating wood
    • 木材加工工艺
    • US3785770A
    • 1974-01-15
    • US3785770D
    • 1972-08-01
    • WYCKOFF CO
    • HUDSON C
    • B27K3/08B27K3/40B27K3/50B05C11/10
    • B27K3/08B27K1/02B27K3/40B27K3/50B27K5/001
    • A wood preservative composition which substantially eliminates formation of pentachlorophenol crystals on the surface of the treated wood and results in increased paintability of the treated wood over compositions previously used consists of polypropylene glycol and a thermoplastic hydrocarbon resin derived from high temperature cracking of petroleum added to a solution of pentachlorophenol in a narrow boiling range mineral spirits solvent. Minor amounts of dioctylphthalate may be added which, along with the polypropylene glycol, prevent the formation of visible pentachlorophenol crystals on the surface of the treated product. Wood or other cellulosic materials are impregnated with the composition under pressure and the solvent carrier extracted and recovered from the wood before discharge of the wood from the treating chamber by a combination of heat and vacuum. The treated product, on removal from the treating chamber, is dry and clean to the touch with no ''''blooming'''' or formation of visible pentachlorophenol crystals on the surface of the wood.
    • 木材防腐剂组合物基本上消除了经处理的木材表面上形成五氯苯酚晶体并导致经处理的木材与以前使用的组合物的可涂覆性增加的组合物包括聚丙二醇和衍生自石油的高温裂解的热塑性烃树脂 五氯苯酚在一个窄沸点溶剂中溶解。 可以加入少量的邻苯二甲酸二辛酯,其与聚丙二醇一起防止在经处理的产品的表面上形成可见的五氯苯酚晶体。 木材或其他纤维素材料在压力下浸渍组合物,并且通过热和真空的组合将木材从处理室排出之前,从木材中提取和回收溶剂载体。 经处理的产品从处理室中取出后,在木材表面没有“开花”或形成可见的五氯苯酚晶体,干燥干净。