JPS5891865A - Bleaching method using hydrogen peroxide - Google Patents
Bleaching method using hydrogen peroxideInfo
- Publication number
- JPS5891865A JPS5891865A JP56187199A JP18719981A JPS5891865A JP S5891865 A JPS5891865 A JP S5891865A JP 56187199 A JP56187199 A JP 56187199A JP 18719981 A JP18719981 A JP 18719981A JP S5891865 A JPS5891865 A JP S5891865A
- Authority
- JP
- Japan
- Prior art keywords
- bleaching
- hydrogen peroxide
- peroxide
- pulp
- copper sulfate
- 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
- 238000004061 bleaching Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title description 24
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 13
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 13
- 150000002978 peroxides Chemical class 0.000 claims description 9
- 239000007844 bleaching agent Substances 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000009896 oxidative bleaching Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000012733 comparative method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000002081 peroxide group Chemical group 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000004552 water soluble powder Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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】
本発明は、過酸化水素あるいは過酸化尿素などの過酸化
物を用いて繊維やパルプを漂白づ゛るに際し、）票白液
をアルカリ性に調整せずともほぼ中性下で効果的に酸化
漂白を行なうことができる方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for bleaching fibers and pulp using peroxides such as hydrogen peroxide or urea peroxide, which makes the whitening solution almost neutral without adjusting it to alkalinity. The present invention relates to a method for effectively carrying out oxidative bleaching under the following conditions.
従来から木綿４１ｉＩ（ｔ、木綿繊維と合成ｌｌｉ紺の
混紡品、あるいはパルプ等を漂白する場合に、過酸化水
素等の過酸化物による酸化漂白が広く用いられている。Conventionally, oxidative bleaching using peroxides such as hydrogen peroxide has been widely used when bleaching cotton 41iI (t), blends of cotton fiber and synthetic navy blue, pulp, etc.
漂白剤としての過酸化水素は、保存中の分解を防ぐため
に酸性に保っであるので、漂白に使用するに際しては漂
白液にアルカリを添加して ｐＨをアルカリ側に調整す
ることによって過酸化水素の分解を促進させる必要があ
る。しかしながら、過酸化水素の分解速度が早過ぎると
十分な漂白効果を得ることができず、一方、分解速度を
抑え過ぎても漂白時間がながくかかったり分解不十分で
所期の漂白効果を得ることができない。このように、漂
白液のＩ）Ｈ調整は非常に重要であり、ｐＨ緩衝剤を使
用するなどの煩雑さも要求される。Hydrogen peroxide used as a bleaching agent is kept acidic to prevent decomposition during storage, so when using it for bleaching, add alkali to the bleaching solution to adjust the pH to an alkaline side. It is necessary to promote decomposition. However, if the decomposition rate of hydrogen peroxide is too fast, a sufficient bleaching effect cannot be obtained; on the other hand, even if the decomposition rate is suppressed too much, the bleaching time may take a long time or the desired bleaching effect may not be obtained due to insufficient decomposition. I can't. As described above, the I)H adjustment of the bleaching solution is very important and requires the use of a pH buffer.
そこで本発明は、過酸化物を用いてＭＡ ＩＥｌｔやパ
ルプを漂白する場合に、漂白液のｐＨをアルカリ側に調
整する必要がなく、中性付近でも過酸化物の分解を適度
に促して効果的な酸化漂白を行なうことができる方法を
提供することを目的としてなされたものである。Therefore, when bleaching MA IElt or pulp using peroxide, the present invention eliminates the need to adjust the pH of the bleaching solution to the alkaline side, and is effective by moderately promoting the decomposition of peroxide even near neutrality. The purpose of this invention is to provide a method that can perform oxidative bleaching.
すなわち本発明による漂白方法は、過酸化物を用いて繊
維またはパルプを漂白するに際し、漂白液中に触媒量の
ｆａ酸銅を添加１°ることによって、中性付近にて漂白
を行なえるようにしたことを特ＩＫ＋とするものである
。That is, in the bleaching method according to the present invention, when bleaching fibers or pulp using peroxide, by adding a catalytic amount of fa acid copper to the bleaching solution, bleaching can be performed at around neutrality. The special IK+ is that the
本発明を実施するに際しては、従来ｆ’ｓ ＋ら慣用さ
れでいる過酸化水素あるい（Ｊ過酸化尿素を用いる漂白
方法がそのまま採用でき、漂白浴中に硫酸銅を添加りる
ことにＪ：って、従来ｐ１−１調整のために用いられて
いたアルカリ剤や１１＋−１緩衝剤を使用しなくても、
中↑り付近の漂白浴で効果的な漂白処理を行なうことが
できるのである。When carrying out the present invention, a bleaching method using hydrogen peroxide or (J urea peroxide) which has been conventionally used can be directly adopted, and copper sulfate may be added to the bleaching bath. :So, without using alkaline agents or 11+-1 buffers that were conventionally used for p1-1 adjustment,
Effective bleaching treatment can be carried out in the bleach bath near the middle ↑.
一般に、過酸化物として過酸化原基を用いる場合に（ま
、ピロリン酸ソーダのごとき金属イオン封鎖剤を併用す
ること、また過酸化水素を用いる場合には界面活性剤等
の助剤を（ｉｆ用づることは従来と同様である。Generally, when a peroxide base is used as the peroxide (if Its use is the same as before.
硫酸銅は通常の触媒量を添加づればよく、一般的には、
漂白液中に使用する過酸化物量〈過酸化水素の場合には
３５％過酸化水素として）に対して０．０５〜Ｇ、５ｖ
ｔ％の範囲である。Copper sulfate can be added in the usual catalytic amount; generally,
0.05-G, 5v for the amount of peroxide used in the bleach solution (in the case of hydrogen peroxide, as 35% hydrogen peroxide)
It is in the range of t%.
以下に実施例を挙げて本発明をさらに説明する。The present invention will be further explained below with reference to Examples.
実施例１
過酸化尿素 ８０ ｗｔ％
ビロリン酸ソーダ １９．９ｗｔ％
ｌａ酸１１ｍ ０．１ｗｔ％上記を攪
拌混合機を用いて順次混和し、白色水溶性の粉状混合物
を得た。この混合物 １０ｇ／９を含む漂白浴（ｐｌ−
１６，８）を用い、液比１：２０にて木綿布く白色度／
ＩＯ）を漂白浴中に浸漬して漂白処理を施した。処理時
間、処理調度および処理後の本綿布の白色度を第１表に
示す。Example 1 Urea peroxide 80 wt% Sodium birophosphate 19.9 wt% La acid 11 m 0.1 wt% The above ingredients were successively mixed using a stirring mixer to obtain a white water-soluble powder mixture. A bleach bath containing 10 g/9 of this mixture (pl-
16,8) at a liquid ratio of 1:20.
IO) was subjected to bleaching treatment by immersing it in a bleach bath. Table 1 shows the treatment time, treatment preparation, and whiteness of the cotton fabric after treatment.
比較のため、硫酸銅を添加しないこと以外は上記と全く
同じ処理操作および処理条件で本綿布を漂白処理した結
果を第１表に併記づ−る。For comparison, Table 1 also shows the results of bleaching a cotton fabric using the same processing operations and conditions as above, except that copper sulfate was not added.
第１表
本発明法 比較法
（硫酸銅添加） （硫酸銅無添加）
処理温度 ２２℃ ６５℃ ６５℃処理時間 ２
時間 ３０分 ３０分白色度シト ７３ ７４
． ５４＊白色酊は、ホトボルト改削比色計（
東洋煽機■製）でＢ光源（７８，６）を使用して測定し
た。Table 1 Method of the present invention Comparative method (addition of copper sulfate) (no addition of copper sulfate) Treatment temperature 22°C 65°C 65°C Treatment time 2
Time 30 minutes 30 minutes Whiteness 73 74
．． 54*White alcohol is measured using a photobolt modified colorimeter (
Measurements were made using a B light source (78, 6) with a Toyo Senki (manufactured by Toyo Senki ■).
第１表かられかるように、漂白浴が中性の場合には、’
ｐＭ＠銅を添加しないと過酸化尿素の分解が適度に起ら
ず従って白色度も上がらないが＠酸銅を添加することに
よって中性下においても過酸化原糸の分解が促進され、
効果的な漂白処理ができる。As shown in Table 1, if the bleach bath is neutral, '
If pM@copper is not added, the decomposition of urea peroxide will not occur appropriately, and therefore the whiteness will not increase, but by adding @acid copper, the decomposition of peroxide filaments is promoted even under neutral conditions,
Can perform effective bleaching treatment.
実施例２
３５％過酸化水素１０％ｏｗｆとビロリン酸ソーダ２．
５％ｏｖｒｆを含む漂白浴中にｒａ醸銅０．５ｗｔ％（
３５％過酸化水素に対して）を添加し、液比１：１０に
てポリエステル−木綿混紡布（白色度／Ｉ３）をこの漂
白浴（１）ｌ−１６，８）中に浸漬して漂白処理を施し
た。処理時間、処理温度および処理後の混紡布の白色度
を第２表に示す。Example 2 35% hydrogen peroxide 10% owf and sodium birophosphate2.
RA brewed copper 0.5 wt% (
35% hydrogen peroxide) was added and the polyester-cotton blend fabric (whiteness/I3) was immersed in this bleaching bath (1) l-16,8) at a liquid ratio of 1:10 for bleaching. Processed. Table 2 shows the treatment time, treatment temperature, and whiteness of the blended fabric after treatment.
比較のため、硫酸銅を添加しないこと以外は上記と全く
同じ処理操作および処理条件でポリ５−
エステル−木綿混紡布を漂白処理した結果を第２表に併
記する。For comparison, Table 2 also shows the results of bleaching a poly-5-ester-cotton blend fabric using the same processing operations and processing conditions as above, except that copper sulfate was not added.
第２表
本発明法 比較法
（硫酸銅添加） （硫酸銅無添加）
処理温度 ２２℃ ６５℃ ６５℃処理時間 ２
時間 ３０分 ３０分白色度 ７４ ７５
５７第２表から明らかなように、硫酸銅を漂白
浴中に添加することによって中性下にても効果的な過酸
化水素漂白ができることがわかる。Table 2 Method of the present invention Comparative method (addition of copper sulfate) (no addition of copper sulfate) Treatment temperature 22°C 65°C 65°C Treatment time 2
Time 30 minutes 30 minutes Brightness 74 75
57 As is clear from Table 2, effective hydrogen peroxide bleaching can be achieved even under neutral conditions by adding copper sulfate to the bleaching bath.
実施例３
実施例１で得られた過酸化尿素、ピロリン酸ソーダおよ
び硫酸銅の混合物８０／４２を含む漂白浴（ｌ１ｌ−４
６，８）を用いて木材パルプ（白色度４３）をパルプ潤
度１５％、温度５０℃にて２時間漂白処理した結果、白
色度６６のパルプが得られた。Example 3 A bleaching bath (111-4
As a result of bleaching wood pulp (whiteness: 43) using 6,8) at a pulp moisture content of 15% and a temperature of 50° C. for 2 hours, a pulp with a whiteness of 66 was obtained.
比較のため、硫酸銅を用いないこと以外は上６−
記と全く同じ処理操作および処理条件で漂白処理したと
ころ、得られたパルプの白色度は７１６であった。For comparison, a bleaching treatment was carried out using exactly the same processing operations and processing conditions as in Section 6 above, except that copper sulfate was not used, and the whiteness of the obtained pulp was 716.
実施例４
３５％過酸化水素８ｇ／′Ωとビ「１リン酸ソーダ２９
／Ωを含む漂白浴（１目１６．８）に硫酸銅０．５ｗｔ
％（３５％過酸化水素に対して）を添加し、この浴にパ
ルプ濃度１５％となるように水利パルプ（白色度／１３
）を浸ｔＮ シて温度５０℃にて２時（ｉ！ｌ漂白処理
した結果、白色度６７のパルプが得られた。Example 4 8 g/'Ω of 35% hydrogen peroxide and 29 g of sodium biphosphate
0.5wt of copper sulfate in a bleach bath (16.8/Ω)
% (relative to 35% hydrogen peroxide) and water pulp (whiteness/13) was added to this bath to give a pulp concentration of 15%.
) was soaked for 2 hours (i!l) at a temperature of 50° C., resulting in a pulp with a brightness of 67.
比較のため、硫酸銅を用いないこと以外は上記と全く同
じ処理操作および処理条件で漂白処理したところ、得ら
れたパルプの白色度は４６であった。For comparison, bleaching was carried out under exactly the same processing operations and processing conditions as above, except that copper sulfate was not used, and the whiteness of the obtained pulp was 46.
７−7-
Claims (1)
し、漂白液中に触媒量の硫酸銅を添加することにＪ：っ
て、中性付近にて漂白を行なえるようにしたことを特徴
とする過酸化物を用いる漂白方法。1. When bleaching fibers or pulp using peroxide, a catalytic amount of copper sulfate is added to the bleaching solution, making it possible to bleach at near neutrality. A bleaching method using peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56187199A JPS5891865A (en) | 1981-11-21 | 1981-11-21 | Bleaching method using hydrogen peroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56187199A JPS5891865A (en) | 1981-11-21 | 1981-11-21 | Bleaching method using hydrogen peroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5891865A true JPS5891865A (en) | 1983-05-31 |
Family
ID=16201823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56187199A Pending JPS5891865A (en) | 1981-11-21 | 1981-11-21 | Bleaching method using hydrogen peroxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5891865A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369841A2 (en) * | 1988-10-25 | 1990-05-23 | S.A. Camp Fabrica De Jabones | Textile bleaching compositions effective at low temperatures |
| JP2009529609A (en) * | 2005-12-02 | 2009-08-20 | アクゾ ノーベル ナムローゼ フェンノートシャップ | Method for producing high yield pulp |
-
1981
- 1981-11-21 JP JP56187199A patent/JPS5891865A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369841A2 (en) * | 1988-10-25 | 1990-05-23 | S.A. Camp Fabrica De Jabones | Textile bleaching compositions effective at low temperatures |
| JP2009529609A (en) * | 2005-12-02 | 2009-08-20 | アクゾ ノーベル ナムローゼ フェンノートシャップ | Method for producing high yield pulp |
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