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AssigneeAsano Mokuzai Industry Co., Ltd.
InventorsNariaki Asano, Hiroya Asano, Takahito Asano
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A fire-proof treatment solution capable of resolving problems, such as low solubility leading to low concentration and hence low combustion inhibiting effect and water solubility leading to a disadvantage of eluviation, of boron compounds used as a constituent of a flame-retarding treatment solution. In particular, a fire-proof treatment solution produced by adding phosphoric acid and a silane coupling agent to a weak acid or weak alkali aqueous metal salt solution containing a boron compound to thereby obtain a mixed aqueous solution and adding a plant extract composed mainly of a polyphenol compound to the mixed aqueous solution. This fire-proof treatment solution can be widely applied to members composed mainly of cellulose, such as wood, paper and natural fibers. This fire-proof treatment solution can increase the fixation of chemicals to thereby attain a high combustion inhibiting effect and can minimize the occurrence of eluviation.
A fire-retardant treatment solution obtained by adding 1–10 wt. % of phosphoric acid and 0.1–5 wt. % of a silane coupling agent to an aqueous solution containing 1–10 wt. % of an acidic or alkaline metal salt and 50–95 wt. % of a boron compound to form a mixed aqueous solution and adding to said mixed aqueous solution 0.5–40 wt. % of a polyphenolic compound.
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