JPS6132704A - Method of decoloring woody material - Google Patents
Method of decoloring woody materialInfo
- Publication number
- JPS6132704A JPS6132704A JP15456684A JP15456684A JPS6132704A JP S6132704 A JPS6132704 A JP S6132704A JP 15456684 A JP15456684 A JP 15456684A JP 15456684 A JP15456684 A JP 15456684A JP S6132704 A JPS6132704 A JP S6132704A
- Authority
- JP
- Japan
- Prior art keywords
- decolorizing
- wood
- curing
- solution
- reducing agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔技術分野〕 この発明は、木質材料の脱色法に関する。[Detailed description of the invention] 〔Technical field〕 This invention relates to a method for decolorizing wood materials.
本発明で木質材料とは、木材、単板、インシュレージ、
ン、木粉醇木材及その加工されたものを含む材料である
。In the present invention, wood materials include wood, veneer, insulation,
It is a material that includes wood powder, wood powder, and processed materials.
上記した木質材料を、過酸化水素水(以下H2O2とい
う)で脱色する場合、従来の方法としては、H,O,の
みやナルカリ性にしたH2O2を塗布して放置したり、
浸漬式にして脱色を行なっていたが。When decolorizing the above-mentioned wood materials with a hydrogen peroxide solution (hereinafter referred to as H2O2), the conventional methods include applying H, O, or narcalized H2O2 and leaving it for a while.
Previously, decolorization was done using an immersion method.
これらの欠点として、H,O,のロスが大きいことと。The disadvantage of these is that there is a large loss of H and O.
及び脱色効果が脱色力、均一性とも満足すべきものでな
いことである。Also, the decolorizing effect is unsatisfactory in both decolorizing power and uniformity.
本発明は、このような事情に鑑みなされたもので、木質
材料を効率よく脱色することを可能とする木質材料の脱
色法を提供することを目的とする。The present invention was made in view of the above circumstances, and an object of the present invention is to provide a method for decolorizing wood materials that makes it possible to efficiently decolorize wood materials.
H2O2にアルカリを加えて木質材料に含浸させ室温等
にて放置した場合材の中への浸透が遅く、またH2O2
の活性化も、温度が低いため小さい。それで脱色効果は
小さくなる。When alkali is added to H2O2 and impregnated into wood materials and left at room temperature, penetration into the wood is slow, and H2O2
Activation is also small due to the low temperature. Therefore, the bleaching effect becomes smaller.
そこで(H,O,■アルカリ液)を含浸させた後加熱養
生することによりH2O2の活性化が大きく々るととも
に、液の浸透が進み木質材料の内部にまで脱色が進むこ
とになる。Therefore, by impregnating with (H, O, ①alkaline solution) and then heating and curing it, the activation of H2O2 is greatly increased, and the penetration of the solution progresses, and the decolorization progresses to the inside of the wood material.
この時の養生条件は限定しないが、温度は高いtlど早
く反応する。また、高湿中の方が乾燥せず、液の浸透、
脱色効果も大きい。使用するアルカリの種類、濃度Hz
Ox 111度は限定しないが、通常NaOH、KO
H、Nc2C03,LiOH等が使われH2O2との混
合PH値が7〜10前後に調整される。The curing conditions at this time are not limited, but the higher the temperature, the faster the reaction. In addition, in high humidity conditions, it will not dry out and the liquid will penetrate.
It also has a great bleaching effect. Type of alkali used, concentration Hz
Ox 111 degrees is not limited, but usually NaOH, KO
H, Nc2C03, LiOH, etc. are used, and the mixed pH value with H2O2 is adjusted to around 7 to 10.
通常アルカリ濃度1〜4%程度にて使用する。It is usually used at an alkali concentration of about 1 to 4%.
またH2O2液の中に、ケイ酸ソーダやMgSO4を添
加すれば、さらに脱色効果が上る。通常、ケイ酸ソーダ
は1〜5%、MgSO40,5〜2%程度で使用する。Further, if sodium silicate or MgSO4 is added to the H2O2 liquid, the decolorizing effect will be further improved. Usually, sodium silicate is used at about 1 to 5% and MgSO40.5 to 2%.
この外* H2O2処理の前に還元剤の水溶液を含浸さ
せると効果が大きい。使用する還元剤の種類、濃度含浸
量も限定しない。In addition to this * Impregnation with an aqueous solution of a reducing agent before H2O2 treatment has a great effect. The type and concentration of the reducing agent used and the amount of impregnation are not limited.
Na BH4、ヒドラジン、亜硫酸水5iNa、亜ニチ
オン酸Na% ロンガリット、シュウ酸等が用いられる
。Na BH4, hydrazine, 5iNa sulfite solution, Na% Rongalite dithionite, oxalic acid, etc. are used.
また、還元剤含浸の後でも養生を行なう方が良い。この
時の条件も限定しないが室温程度で長時間かけた方が良
い場合が多い。Furthermore, it is better to perform curing even after impregnating with a reducing agent. The conditions at this time are not limited either, but it is often better to keep it at room temperature for a long time.
通常、還元剤濃度1〜8%、含浸量5O−150Vで養
生条件は15〜30″C190%団以上で12 Hr以
上養生する。Usually, the curing conditions are 15 to 30'' C190% or higher and curing for 12 hours or more at a reducing agent concentration of 1 to 8%, an impregnation amount of 5O-150V.
〈実施例■〉
厚さ1.5mのアガチス単板を脱色するためH2O2加
%、 NaOH1%の液をスポンジロールコータ−にて
約150PJ/塗布後、60°C95%RH中にて4H
r養生した。<Example ■> To decolorize a 1.5 m thick agathis veneer, apply a solution containing 1% H2O2 and 1% NaOH using a sponge roll coater at a rate of about 150 PJ, and then heat at 60°C in 95% RH for 4 hours.
It was cured.
〈実施例■〉
実施例■においてH2O,2096、NaOH1%、3
号ケイ酸ソーダ3%の液を含浸した。<Example ■> In Example ■, H2O, 2096, NaOH 1%, 3
It was impregnated with a 3% solution of sodium silicate.
〈実施例の〉
実施例■において、H2O220%、NaOH1%、M
gSO40,8Xの液を含ひした。<Example> In Example 2, 20% H2O2, 1% NaOH, M
A solution of gSO40.8X was impregnated.
〈実施例■〉
実施例■の前処理として、 NaBH40,8%を15
0W塗布した。<Example ■> As a pretreatment for Example ■, 15% of NaBH40.8%
0W was applied.
〈実施例■〉
実施例■の後に加°c95%団の雰囲気中にて、6 H
r養生Lし 、 ソノ後H2O220%、NaOH1%
を含浸した。<Example ■> After Example ■, 6 H was added in an atmosphere of 95%
After curing, add 20% H2O, 1% NaOH
Impregnated with.
それぞれ処理後ただちに取出し厚みの中央凍て切削し測
色した。参考のためH,O,液塗布後室温にて放置した
ものも測定した。Immediately after each treatment, the specimens were taken out, frozen cut at the center of the thickness, and measured for color. For reference, samples that were left at room temperature after coating with H, O, and liquid were also measured.
■ H2O2とアルカリとの混合液含浸による脱色にお
いて、従来の室温放置に比べ、加熱養生することにより
脱色性及浸透性が向上した。(2) In decolorization by impregnation with a mixed solution of H2O2 and alkali, heat curing improved decolorization and permeability compared to the conventional method of leaving the product at room temperature.
■ アルカリ含浸→H20,含浸処理に比ベニ程が少な
くなる。■ Alkaline impregnation → H20, the amount of carbon dioxide is reduced compared to the impregnation process.
Claims (6)
を含浸させた後、加熱養生することを特徴とする木質材
料の脱色法。(1) A method for decolorizing a wood material, which is characterized by impregnating the wood material with a mixture of hydrogen peroxide and an alkali, and then heating and curing the material.
のである特許請求の範囲第1項記載の木質材料の脱色法
。(2) A method for decolorizing a wood material according to claim 1, wherein the curing is performed by leaving the material at high humidity.
る、特許請求の範囲第1項又は第2項記載の木質材料の
脱色法。(3) A method for decolorizing wood materials according to claim 1 or 2, wherein sodium silicate is mixed into the decolorizing solution.
のである、特許請求の範囲第1項、第2項又は第3項ま
でのいずれかに記載の木質材料の脱色法。(4) The method for decolorizing wood materials according to any one of claims 1, 2, and 3, wherein magnesium sulfate is mixed in the decolorizing solution.
還元剤を含浸させることを特徴とする特許請求範囲第1
項、第2項、第3項又は第4項記載の木質材料の脱色法
。(5) Claim 1, characterized in that the wood material is impregnated with a reducing agent as a pretreatment for decolorization with hydrogen peroxide.
A method for decolorizing a wood material according to paragraph 2, paragraph 3, or paragraph 4.
許請求範囲第1項、第2項、第3項、第4項、又は第5
項記載の木質材料の脱色法。(6) Claims 1, 2, 3, 4, or 5, in which curing is performed after impregnation with a reducing agent as a pretreatment.
Method for decolorizing wood materials as described in Section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15456684A JPS6132704A (en) | 1984-07-25 | 1984-07-25 | Method of decoloring woody material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15456684A JPS6132704A (en) | 1984-07-25 | 1984-07-25 | Method of decoloring woody material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6132704A true JPS6132704A (en) | 1986-02-15 |
Family
ID=15587037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15456684A Pending JPS6132704A (en) | 1984-07-25 | 1984-07-25 | Method of decoloring woody material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6132704A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62267102A (en) * | 1986-05-14 | 1987-11-19 | 松下電工株式会社 | Method of decoloring wood |
US6905520B2 (en) * | 1997-05-28 | 2005-06-14 | Stain, Inc. | Mineral stains for wood and other substrates |
-
1984
- 1984-07-25 JP JP15456684A patent/JPS6132704A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62267102A (en) * | 1986-05-14 | 1987-11-19 | 松下電工株式会社 | Method of decoloring wood |
US6905520B2 (en) * | 1997-05-28 | 2005-06-14 | Stain, Inc. | Mineral stains for wood and other substrates |
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