JPS6115194B2 - - Google Patents
Info
- Publication number
- JPS6115194B2 JPS6115194B2 JP55093479A JP9347980A JPS6115194B2 JP S6115194 B2 JPS6115194 B2 JP S6115194B2 JP 55093479 A JP55093479 A JP 55093479A JP 9347980 A JP9347980 A JP 9347980A JP S6115194 B2 JPS6115194 B2 JP S6115194B2
- Authority
- JP
- Japan
- Prior art keywords
- bleaching
- hydrogen peroxide
- alkaline
- fibers
- polyester fibers
- 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.)
- Expired
Links
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 38
- 239000000835 fiber Substances 0.000 claims description 38
- 238000004061 bleaching Methods 0.000 claims description 34
- 229920000728 polyester Polymers 0.000 claims description 28
- 238000009897 hydrogen peroxide bleaching Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000004043 dyeing Methods 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 239000000975 dye Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000003513 alkali Substances 0.000 description 6
- 238000004904 shortening Methods 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical class [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- -1 knits Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910000318 alkali metal phosphate Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009990 desizing Methods 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 229940001496 tribasic sodium phosphate Drugs 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Coloring (AREA)
Description
本発明は工程短縮を目的としポリエステル繊維
製品を過酸化水素で漂白するに際し、漂白と同時
にポリエステル繊維に染色を施す方法に関する。
一般にポリエステル繊維及びポリエステル繊維
と他の繊維の混紡、混織、混編品等のポリエステ
ル繊維製品は、糊抜、精練及び漂白を行なつた後
に別工程でポリエステル繊維を染色するのが通常
である。
又一般に繊維の過酸化水素による漂白はアルカ
リ性で行なう事が必須とされ、ポリエステル繊維
製品もこの例にもれる事なく、過酸化水素で漂白
する際はアルカリ性で行われる。しかし、ポリエ
ステル繊維の分散染料による染色はアルカリ性に
おいては不適であるため、従来のアルカリ性過酸
化水素漂白では漂白と同時にポリエステル繊維の
染色を行なう事は不可能であつた。
そこで本発明者らは、工程短縮を目的として過
酸化水素漂白時にポリエステル繊維用の染料を添
加し漂白と同時にポリエステル繊維に染色を施す
事が出来ないか鋭意研究し本発明に達した。
従来、過酸化水素による繊維および繊維製品の
漂白はアルカリ性で行うことが必須であるとされ
ている。その理由としては、文献雑誌等に記載さ
れている様に、過酸化水素はアルカリ性におい
て、次の反応のようにOH―と反応し、HO2-を発
生し（H2O2＋OH-→HO2 -＋H2O）
そのHO2 -が漂白に大きく関与し効果的な漂白が
行なわれるとされ、通常全ての繊維は過酸化水素
にて漂白を行なう場合アルカリ性にて行なわれて
いる。
しかし、本発明者らは、特願昭54−8068に示し
た如く、従来行なわれてきた、アルカリ性過酸化
水素の概念を打ち破るアルカリ性過酸化水素漂白
の欠点を改良した新しい過酸化水素漂白法を開発
した。
この方法は弱酸性過酸化水素漂白を行ない、そ
の後アルカリ剤を添加し残存過酸化水素を利用し
て、アルカリ性過酸化水素漂白を行なう事を特徴
とする過酸化水素による漂白法である。
本発明者らはポリエステル繊維製品を上記新し
い過酸化水素漂白法においてポリエステル繊維用
染料を弱酸性漂白時に添加すると、漂白と同時に
ポリエステル繊維の染料が行なえる事を見い出し
本発明を完成させた。
ポリエステル繊維及びポリエステル繊維と他の
繊維との混紡、混織、混編品をPH５〜７の領域で
弱酸性過酸化水素漂白を行い、次いでその系にア
ルカリ剤を添加してPH8.5〜11とし、同一系にお
いて残存過酸化水素を利用して引続きアルカリ性
過酸化水素漂白を行う際、弱酸性漂白時にポリエ
ステル繊維に染色を施すことを特徴とするポリエ
ステル繊維製品の過酸化水素による同浴染色漂白
法に関する。
本発明に適用される繊維物質は、ポリエステル
繊維及びポリエステル繊維と他の繊維の混紡、混
織、混編品その他の繊維製品である。他の繊維と
しては、天然、再生、半合成、ポリエステル繊維
以外の合成繊維である。
本発明に適用されるポリエステル繊維用染料は
一般に市販されている種々の染料があげられ、使
用量及び染色法はそれら市販品の適用規準に従つ
て行なう。
染色法としては、100℃前後の温度によるキヤ
リヤーを使用したキヤリヤー染色法、110〜130℃
の高温で行なう高温染色法があり、その場合、弱
酸性過酸化水素漂白の温度をそれらの染色法の温
度に合わせて、染色と同時に漂白を行なう。
本発明の弱酸性過酸化水素漂白はPH５〜７の領
域で行われる。PH値の調節は、例えば漂白助剤と
して中性の界面活性剤（一般に繊維漂白で使用さ
れている界面活性剤は殆んどが中性タイプであ
る）を使用する場合は特別に酸、アルカリによつ
てPH調整する必要はなく、用水と過酸化水素と界
面活性剤の混合によつてほぼPH５〜７の間に収ま
る。必要があれば通常の酸、アルカリによつてPH
５〜７の間に調整する。漂白によつて液のPHは低
下する。PHが５よりも低くなる場合にはアルカリ
を添加してPHを５以上に調整する。
又、過酸化水素の量は、通常漂白に使用されて
いる範囲でよく特別に限定されないが、実用的範
囲としては35％過酸化水素を５〜30c.c.／ｌ添加す
るのが適当である。
本発明のアルカリ性漂白は前記の弱酸性漂白の
のち同系にアルカリ剤を添加し、主としてPH8.5
〜11の弱アルカリ性で過酸化水素漂白を行なう。
PH11以上でも漂白しうるが、液中の過酸化水素濃
度が高いときにPHを高くするのは好ましくない。
添加されるアルカリ剤としては一般に使用されて
いるアルカリ剤でよく、例えば、第三リン酸ソー
ダ、ピロリン酸ソーダなどのアルカリ金属のリン
酸塩、メタホウ酸ソーダ、炭酸ソーダ、ケイ酸ソ
ーダなどのアルカリ金属の弱酸塩、苛性ソーダ、
苛性カリなどのアルカリ金属の水酸化物、アンモ
ニア水、炭酸アンモニウムなどのアルカリ性アン
モニウム塩およびこれら化合物の２種以上の混合
物があげられる。添加量は、PH8.5〜11になるよ
うにする。
弱酸性漂白およびアルカリ性漂白の温度、時間
は通常の範囲でよく特に限定されないが、通常、
温度50〜120℃、時間0.5〜５時間の範囲が通し、
漂白する繊維の種類、形態、漂白装置の種類、目
的製品の要求、製品状態に応じて選定する。本発
明のアルカリ性漂白で高温処理する場合には硬い
風合になることはある程度まぬがれることはでき
ないので、例えば柔らかな風合を主に要求される
場合には低温側で行なう。又、柔らかな風合をあ
る程度犠性にしても高白度を得たい場合には、ア
ルカリ性漂白を高温側で行なう。
又、本発明の方法は弱酸性過酸化水素漂白後、
過酸化水素の残存量が少ない場合、高白度を得る
ために不足の過酸化水素量をアルカリ剤添加と同
時に添加し、アルカリ性過酸化水素漂白を行なう
事も出来る。
本発明の方法は自然循環式装置、強制循環式装
置等の一般の漂白に使用されている。過酸化水素
による腐食性のない装置であればいずれの漂白装
置にも適用出来る。
又、繊維への薬剤の浸透を良くする目的で、通
常、通常の繊維の漂白において使用されている界
面活性剤を使用する。使用量は各市販品の純分濃
度、浸透力によつて異なるが、各市販品の適用量
に従つて使用する。一般的には純分として0.1〜
2g／ｌが適当量である。
本発明法によれば、特願昭54−8068号に説明さ
れている如く、従来のアルカリ性過酸化水素漂白
の欠点を改良しながらポリエステル繊維製品の染
色が漂白と同時に行なえ、工程短縮、節水が出
来、又それら繊維製品の品質を著しく改善する事
が出来る。
以下、実施例及び比較例で更に詳細に説明す
る。
実施例１、比較例１
チーズ漂白機にてポリエステル（65）／綿
（35）混紡の40双糸を次の様な条件にて漂白を行
なつた。結果を表１に示す。
実施例 １
The present invention relates to a method of dyeing polyester fibers simultaneously with bleaching when bleaching polyester fiber products with hydrogen peroxide for the purpose of shortening the process. In general, for polyester fiber products such as polyester fibers and blends, blends, and knits of polyester fibers and other fibers, the polyester fibers are usually dyed in a separate process after desizing, scouring, and bleaching. . Generally, it is essential to bleach fibers with hydrogen peroxide in alkaline conditions, and this also applies to polyester fiber products, where bleaching with hydrogen peroxide is carried out in alkaline conditions. However, since dyeing polyester fibers with disperse dyes is not suitable in alkaline conditions, it has been impossible to dye polyester fibers at the same time as bleaching using conventional alkaline hydrogen peroxide bleaching. Therefore, the present inventors conducted extensive research into the possibility of dyeing polyester fibers at the same time as bleaching by adding a dye for polyester fibers during hydrogen peroxide bleaching for the purpose of shortening the process, and arrived at the present invention. Conventionally, it has been considered that bleaching of fibers and textile products with hydrogen peroxide must be carried out in alkaline conditions. The reason for this is that hydrogen peroxide reacts with OH- in alkaline conditions as shown in the following reaction, generating HO 2- (H 2 O 2 +OH - → HO 2 - +H 2 O) The HO 2 - is said to play a major role in bleaching and is said to be effective in bleaching, and when all fibers are normally bleached with hydrogen peroxide, it is bleached in alkaline conditions. However, as shown in Japanese Patent Application No. 8068/1986, the present inventors have developed a new hydrogen peroxide bleaching method that improves the drawbacks of alkaline hydrogen peroxide bleaching, which breaks the concept of alkaline hydrogen peroxide. developed. This method is a hydrogen peroxide bleaching method characterized by performing weakly acidic hydrogen peroxide bleaching, then adding an alkaline agent and using the remaining hydrogen peroxide to perform alkaline hydrogen peroxide bleaching. The present inventors have completed the present invention by discovering that when polyester fiber dyes are added during weak acid bleaching of polyester fiber products in the above-mentioned new hydrogen peroxide bleaching method, polyester fiber dyes can be simultaneously bleached. Polyester fibers and blended, woven, and knitted products of polyester fibers and other fibers are subjected to weakly acidic hydrogen peroxide bleaching at a pH of 5 to 7, and then an alkaline agent is added to the system to achieve a pH of 8.5 to 11. Same-bath dyeing and bleaching of polyester textile products with hydrogen peroxide, characterized in that polyester fibers are dyed during weak acid bleaching when subsequent alkaline hydrogen peroxide bleaching is performed using residual hydrogen peroxide in the same system. Regarding the law. The fiber materials applicable to the present invention include polyester fibers, blends of polyester fibers and other fibers, blends, blends, knits, and other fiber products. Other fibers include natural, recycled, semi-synthetic, and synthetic fibers other than polyester fibers. Dyes for polyester fibers that can be applied to the present invention include various dyes that are generally commercially available, and the amount and dyeing method to be used are determined in accordance with the applicable standards for these commercially available products. As a dyeing method, carrier dyeing method using a carrier at a temperature of around 100℃, 110 to 130℃
There are high-temperature dyeing methods that are carried out at high temperatures, in which the temperature of weakly acidic hydrogen peroxide bleaching is matched to the temperature of those dyeing methods, and bleaching is carried out simultaneously with dyeing. The weakly acidic hydrogen peroxide bleaching of the present invention is carried out in the pH range of 5 to 7. To adjust the PH value, for example, when using a neutral surfactant as a bleaching aid (most surfactants generally used in textile bleaching are neutral types), special acid or alkali There is no need to adjust the pH by mixing water, hydrogen peroxide, and a surfactant, and the pH is approximately within the range of 5 to 7. PH by normal acid or alkali if necessary
Adjust between 5 and 7. Bleaching lowers the pH of the solution. If the pH is lower than 5, add alkali to adjust the pH to 5 or higher. Further, the amount of hydrogen peroxide is within the range normally used for bleaching and is not particularly limited, but as a practical range, it is appropriate to add 5 to 30 c.c./l of 35% hydrogen peroxide. be. In the alkaline bleaching of the present invention, an alkaline agent is added to the same system after the above-mentioned weak acid bleaching, and the pH is mainly 8.5.
Perform hydrogen peroxide bleaching at a mild alkalinity of ~11.
Bleaching is possible even at a pH of 11 or higher, but it is not preferable to raise the pH when the concentration of hydrogen peroxide in the solution is high.
The alkali agent to be added may be any commonly used alkali agent, such as alkali metal phosphates such as tribasic sodium phosphate and sodium pyrophosphate, alkali agents such as sodium metaborate, sodium carbonate, and sodium silicate. Weak acid salts of metals, caustic soda,
Examples include alkali metal hydroxides such as caustic potash, aqueous ammonia, alkaline ammonium salts such as ammonium carbonate, and mixtures of two or more of these compounds. The amount added should be such that the pH is between 8.5 and 11. The temperature and time of weak acid bleaching and alkaline bleaching are within the usual range and are not particularly limited, but usually,
The temperature range is 50 to 120℃ and the time is 0.5 to 5 hours.
Select according to the type and form of the fiber to be bleached, the type of bleaching equipment, the requirements of the target product, and the condition of the product. When high temperature treatment is performed in the alkaline bleaching of the present invention, it is inevitable that the texture will be hard to some extent, so for example, if a soft texture is mainly required, the treatment is carried out at a low temperature. If high whiteness is desired even at the cost of a soft texture, alkaline bleaching is carried out at a high temperature. In addition, the method of the present invention includes the following steps: After weakly acidic hydrogen peroxide bleaching,
When the remaining amount of hydrogen peroxide is small, alkaline hydrogen peroxide bleaching can be carried out by adding the insufficient amount of hydrogen peroxide at the same time as adding the alkaline agent in order to obtain high whiteness. The method of the present invention is used for general bleaching in natural circulation type equipment, forced circulation type equipment, etc. It can be applied to any bleaching equipment as long as it is not corrosive due to hydrogen peroxide. In addition, in order to improve the penetration of chemicals into the fibers, a surfactant that is normally used in conventional fiber bleaching is used. The amount used varies depending on the purity concentration and penetrating power of each commercially available product, but it is used in accordance with the application amount of each commercially available product. Generally, the pure content is 0.1~
2g/l is a suitable amount. According to the method of the present invention, as explained in Japanese Patent Application No. 54-8068, it is possible to dye polyester fiber products at the same time as bleaching, while improving the drawbacks of conventional alkaline hydrogen peroxide bleaching, shortening the process and saving water. It is also possible to significantly improve the quality of these textile products. A more detailed explanation will be given below using Examples and Comparative Examples. Example 1, Comparative Example 1 A 40-ply yarn of polyester (65)/cotton (35) blend was bleached in a cheese bleaching machine under the following conditions. The results are shown in Table 1. Example 1
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】
白度（ｂ値）は値が小さい程黄味の減少を示し
高白度を表わす。
実施例２及び比較例２
テトロン（50）／ナイロン（25）／綿（25）の
混紡メリヤスをサーキユラー漂白機を用いて次の
様な漂白を行なつた。結果を表２に示す。
実施例 ２[Table] As for the whiteness (b value), the smaller the value, the less the yellowness and the higher the whiteness. Example 2 and Comparative Example 2 Tetron (50)/nylon (25)/cotton (25) blended knitted fabric was bleached in the following manner using a circular bleaching machine. The results are shown in Table 2. Example 2
【表】【table】
【表】【table】
【表】【table】
【表】【table】
【表】
以上の様に本発色法は高温染色法、キヤリヤー
染色法を漂白と同時に行なえ、工程短縮、節水及
び柔らかい風合の製品を得る事が出来る。[Table] As described above, this color development method allows high-temperature dyeing and carrier dyeing to be performed simultaneously with bleaching, shortening the process, saving water, and producing products with a soft texture.
Claims (1)
の繊維との混紡、混織、混編品をPH５〜７の領域
で弱酸性過酸化水素漂白を行い、次いでその系に
アルカリ剤を添加してPH8.5〜11とし、同一系に
おいて残存過酸化水素を利用して引続きアルカリ
性過酸化水素漂白を行う際、弱酸性漂白時にポリ
エステル繊維に染色を施すことを特徴とするポリ
エステル繊維製品の過酸化水素による同浴染色漂
白法。1. Polyester fibers and blended, woven, and knitted products of polyester fibers and other fibers are subjected to weakly acidic hydrogen peroxide bleaching at a pH of 5 to 7, and then an alkaline agent is added to the system to achieve a pH of 8.5 to 7. 11, and the same bath dyeing with hydrogen peroxide of polyester fiber products characterized by dyeing polyester fibers during weak acid bleaching when subsequent alkaline hydrogen peroxide bleaching is performed using residual hydrogen peroxide in the same system. Bleaching method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9347980A JPS5721581A (en) | 1980-07-09 | 1980-07-09 | Simultaneous dyeing and bleaching method of polyester fiber product with hydrogen peoxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9347980A JPS5721581A (en) | 1980-07-09 | 1980-07-09 | Simultaneous dyeing and bleaching method of polyester fiber product with hydrogen peoxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5721581A JPS5721581A (en) | 1982-02-04 |
| JPS6115194B2 true JPS6115194B2 (en) | 1986-04-23 |
Family
ID=14083470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9347980A Granted JPS5721581A (en) | 1980-07-09 | 1980-07-09 | Simultaneous dyeing and bleaching method of polyester fiber product with hydrogen peoxide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5721581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11061641B2 (en) | 2019-02-28 | 2021-07-13 | Ricoh Company, Ltd. | Screen sharing system, and information processing apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62138279A (en) * | 1985-12-11 | 1987-06-22 | Ito Yakuhin Kk | Manufacture of confectionery with multi-color pattern |
| CN104213398B (en) * | 2014-08-14 | 2016-03-30 | 浙江航民股份有限公司 | For the production method of polyester-cotton blend oxygen bleaching and disperse dyeing single bath process |
-
1980
- 1980-07-09 JP JP9347980A patent/JPS5721581A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11061641B2 (en) | 2019-02-28 | 2021-07-13 | Ricoh Company, Ltd. | Screen sharing system, and information processing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5721581A (en) | 1982-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2284504A1 (en) | Textile substrate dye stripping | |
| US4880566A (en) | Silicate-and magnesium-free stabilizer mixtures | |
| US4195974A (en) | Desizing and bleaching of textile goods | |
| EP0175272B1 (en) | Process for the bleaching of wool with reducing and oxidizing agents in one bath | |
| US3836475A (en) | Aqueous chlorite bleach containing a hydroxylammonium activator | |
| US5482516A (en) | Process for bleaching textiles | |
| EP1305469B1 (en) | New process for pre-treating cellulosic fibers and cellulosic fiber blends | |
| US5147409A (en) | Agent and method for treating wool fibers wherein the agent is tris(hydroxypropyl)phosphine and/or alkylene oxide addition products thereof | |
| US3595603A (en) | Process for the simultaneous desizing,scouring and bleaching of fabrics | |
| US3227655A (en) | Process for preparation of a bleaching agent | |
| US3345303A (en) | Bleaching composition | |
| JPS6115194B2 (en) | ||
| US5264001A (en) | Sequential oxidative/reductive bleaching and dyeing in a multi-component single liquor system | |
| US4959075A (en) | Silicate- and magnesium-free stabilizer hydrogen peroxide mixtures for bleaching processes | |
| EP0454760A4 (en) | Sequential oxidative and reductive bleaching of pigmented and unpigmented fibers | |
| US2701178A (en) | Permonosulfuric acid treatment of wool, for shrink resistance | |
| US3556710A (en) | Method for bleaching textile fabrics containing portions dyed with a sensitive dyestuff | |
| US4337060A (en) | Method of bleaching textile materials | |
| JPH0122393B2 (en) | ||
| US5527361A (en) | Low temperature process for bleaching textiles | |
| US3829291A (en) | Process of removing polyvinyl alcohol size from fabrics with hydrogen peroxide | |
| US2048991A (en) | Process for bleaching fibrous material | |
| US2193173A (en) | Bleaching of cellulose fibers in peroxide baths | |
| US3348903A (en) | Hydrazine as an anti-staining agent for a peroxide bleaching solution | |
| SU806797A1 (en) | Method of treating grey cotton fabrics |