METHOD FOR PRODUCING WOOD CONTAINING CALCIUM BORATE

PROBLEM TO BE SOLVED: To provide a method for producing wood containing calcium borate derived from colemanite in a state of non-needle-like crystal.SOLUTION: Calcium borate is precipitated in an amorphous state by adjusting the pH of an acidic impregnation liquid to basic, the impregnation liquid b...

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Hauptverfasser:	MITO HIROHIKO, NISHIO KEIJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS FISHING FORESTRY HUMAN NECESSITIES HUNTING NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR TRANSPORTING TRAPPING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing wood containing calcium borate derived from colemanite in a state of non-needle-like crystal.SOLUTION: Calcium borate is precipitated in an amorphous state by adjusting the pH of an acidic impregnation liquid to basic, the impregnation liquid being obtained by immersing colemanite in a strongly acidic aqueous solution of a specific pH. Wood containing calcium borate derived from colemanite in a state of non-needle-like crystal is produced by: precipitating calcium borate in an amorphous state from the acidic impregnation liquid containing calcium borate inside the wood; or impregnating fine particles of calcium phosphate into pores of the wood after pulverizing and/or crushing powder of calcium borate in an amorphous state recovered from the acidic impregnation liquid. 【課題】針状結晶ではない状態でコレマナイトに由来するホウ酸カルシウムを内包する木材を製造する方法を提供すること。【解決手段】コレマナイトを特定のｐＨである強酸性水溶液に浸漬して得られる酸性含浸液のｐＨを塩基性に調整してアモルファス状態のホウ酸カルシウムを析出させる。木材の内部で前述のホウ酸カルシウム含有酸性含浸液からアモルファス状態のホウ酸カルシウムを析出させるか、前述の酸性含浸液から回収されたアモルファス状態のホウ酸カルシウムの粉末を粉砕及び／又は解砕した後、ホウ酸カルシウムの微粉末を木材が有する細孔内に含浸させることによって、針状結晶ではない状態でコレマナイトに由来するホウ酸カルシウムを内包する木材を製造する。【選択図】図３