CN102677449B - Low-temperature activated bleaching agent as well as preparation method and application thereof - Google Patents
Low-temperature activated bleaching agent as well as preparation method and application thereof Download PDFInfo
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- CN102677449B CN102677449B CN201210195006.XA CN201210195006A CN102677449B CN 102677449 B CN102677449 B CN 102677449B CN 201210195006 A CN201210195006 A CN 201210195006A CN 102677449 B CN102677449 B CN 102677449B
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Abstract
The invention relates to a low-temperature activated bleaching agent as well as a preparation method and an application thereof. The low-temperature activated bleaching agent is prepared from the following components by weight percentage: 0.1-1% of acetyl acetone metal complex, 1-10% of organic solvent, 10-20% of fatty alcohol-polyoxyethylene ether, 0.2-1.0% of acetic acid and the balance of water. The preparation method comprises the steps of: uniformly mixing the fatty alcohol-polyoxyethylene ether, the organic solvent and water; then slowly adding acetyl acetone metal complex, adding acetic acid under mechanical agitation, adjusting pH to 5-6, and then continuing to agitate for 2-3 hours at room temperature until a transparent liquid is generated. The invention also provides a batch-type bleaching method of the low-temperature activated bleaching agent for baffeta. The method is simple, low in cost, high in production efficiency, environment-friendly and energy-saving, and suitable for industrial use; and the bleaching temperature is reduced under the precondition of achieving an excellent bleaching effect, and fabric damage is also reduced.
Description
Technical field
The invention belongs to bleaching agent field, particularly a kind of low-temperature activated bleaching agent and its preparation method and application.
Background technology
The current grand strategy from China's economic development, low-carbon economy as the important way of Transformation of Economic Growth just through whole textile industry, it is to take the theory of low consumption, low pollution and low emission to be basis, take that to save energy technology and reduce the innovation of draining technology be core.The gas discharging of textiles in dyeing and finishing process, water resources consumption, energy resource consumption etc. are that industry finally affects the fundamental basis of Comprehensive Assessment on Product environment.There have been in the world at present some pressures or the rules of voluntary or market restriction, such as requiring the information such as Product Identifying carbon footprint.Therefore, for one of basic principle of whole dyeing and finishing industry sustainable development, be exactly " decrement rule ", require exactly to obtain maximum product function with minimum resource consumption.And for current dyeing & printing enterprise, the direct benefit of carrying out low-carbon dyeing and finishing is not only the environmental value that has improved product, and reduce energy consumption, material consumption and discharge, namely reduced production cost.Therefore in " the textile industry 12 development in science and technology outlines " that promulgate this year, explicitly point out, dyeing and finishing industry is by emphasis research and development and the popularization as a few years from now on efficient short process pretreatment new technologies such as Cotton Fabric Low Temperature Bleaching, by 2015, the pre-treatment new technologies such as Cotton Fabric Low Temperature Bleaching will complete industrialization research and development, and promote in the industry.
Conventionally the bleaching pre-treatment of cotton fiber adopts hydrogen peroxide bleaching method, and it has, and bleaching effect is better, retention of whiteness good, pollute less, the advantage such as etching apparatus not.The Basic Mechanism of hydrogen peroxide bleaching is: H
2o
2after decomposition, can generate the active ingredient HOO of bleaching
-, decomposition formula is: H
2o
2→ HOO
-+ H
+.According to chemical reaction equilibrium principle, bleaching adds a certain amount of caustic soda in working solution, in energy and H+, promotes the generation of HOO-.Meanwhile, in traditional hydrogen peroxide method for bleaching, usually needing to add hydrogen peroxide stabilizer to control the hydrogen peroxide causing due to heavy metal ion catalytic action is ineffectually decomposed.So-called cold bleaching pre-treatment refers to and in conventional pre-treating method, adopts special oxygen to float activator, improve effective resolution ratio of hydrogen peroxide, thereby improve the utilization rate of hydrogen peroxide, and make bleaching temperature be reduced to 70 ℃ of left and right, when not affecting fabric whiteness, the problems such as the damage of reduction fabric fibre and weightlessness.
The Activation of Hydrogen Peroxide Solution agent system of research and development mainly comprises at present: have alkanoyl compounds, amide groups compounds, the assorted naphthalene structure class of oxidation and organo-manganese compound etc.On market, the product of industrialization is mainly tetra acetyl ethylene diamine (TAED) and pelargonyl group benzene sulfonic acid sodium salt (NOBS); this two compounds is widely used in American-European Betengent product, but drift at textiles hydrogen peroxide, is not very ripe in the application in pre-treatment all the time.
Summary of the invention
Technical problem to be solved by this invention is that first the present invention provides a kind of low-temperature activated bleaching agent; The present invention provides a kind of preparation method of low-temperature activated bleaching agent in addition; The present invention also provides the batch (-type) method for bleaching of low-temperature activated bleaching agent of the present invention for COTTON FABRIC body.The method is simple, cost is low, production efficiency is high, environmental protection and energy saving, is suitable for industrialization and uses, and is reaching under the prerequisite of good bleaching effect, reduces bleaching temperature, reduces fabric loss.Be specially:
The invention provides a kind of low-temperature activated bleaching agent, composed of the following components according to percentage by weight said composition:
The structure of described cetylacetone metallic complex is:
Wherein M represents Mn (II)-(III), Co (II)-(III) or Fe (II)-(III).
Described organic solvent is diethylene glycol butyl ether, Dipropylene glycol mono-n-butyl Ether or diethylene glycol.
The preparation method of low-temperature activated bleaching agent of the present invention, comprise: fatty alcohol-polyoxyethylene ether, organic solvent and water are mixed, then add cetylacetone metallic complex, under mechanical agitation, add acetic acid, adjusting pH is 5-6, then under room temperature, continue stirring 2-3 hour until generate transparent liquid, obtain low-temperature activated bleaching agent.
Low-temperature activated bleaching agent of the present invention is for the batch (-type) method for bleaching of COTTON FABRIC, and concrete steps comprise:
(1) according to following component and concentration preparation bleaching liquid:
(2) by COTTON FABRIC according to the bleaching liquid that step (1) obtains of putting into of bath raio 1:10, be warming up to 70-85 ℃, bleaching 45-80min, then cooling washing.
In described step (1), the mass fraction of hydrogen peroxide is 35%.
The COTTON FABRIC of described step (2) is knitted fabric or woven.
During described step (2) cooling washing, first use the hot water wash of water temperature 50-60 ℃, the rear cold wash that is room temperature by temperature.
beneficial effect
1) low-temperature activated bleaching agent of the present invention is simple for the batch (-type) method for bleaching of COTTON FABRIC, and cost is low, and production efficiency is high, and environmental protection and energy saving are suitable for industrialization and use.
2) a kind of low-temperature activated bleaching agent of the present invention, reach the effect of textile bleaching, compare with conventional high-temperature hydrogen peroxide bleaching method, reaching under the prerequisite of good bleaching effect, bleaching temperature is reduced to below 80 ℃ from 100 ℃, gradually lack fabric damage, to the ecological, environmental protective of dyeing industry, energy-saving and cost-reducing tool significance.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
20g isomerous tridecanol fatty alcohol-polyoxyethylene ether (8EO) and 5g diethylene glycol butyl ether and 74g water are mixed, then slowly add 1g manganese acetylacetonate (II) metal complex, under mechanical agitation, add acetic acid, adjusting pH is 5-6, then under room temperature, continue stirring 2-3 hour until generate transparent liquid, obtain low-temperature activated bleaching agent.
Embodiment 2
20g isomerous tridecanol fatty alcohol-polyoxyethylene ether (9EO) and 5g Dipropylene glycol mono-n-butyl Ether and 74g water are mixed, then slowly add 1g acetylacetone cobalt (III) metal complex, under mechanical agitation, add acetic acid, adjusting pH is 5-6, then under room temperature, continue stirring 2-3 hour until generate transparent liquid, obtain low-temperature activated bleaching agent.
Embodiment 3
20g isomerous tridecanol fatty alcohol-polyoxyethylene ether (9EO) and 5g diethylene glycol and 74g water are mixed, then slowly add 1g manganese acetylacetonate (III) metal complex, under mechanical agitation, add acetic acid, adjusting pH is 5-6, then under room temperature, continue stirring 2-3 hour until generate transparent liquid, obtain low-temperature activated bleaching agent.
Embodiment bleaches application process: first grey cloth is joined to overflow and dye machine, then bleaching liquid is added, with the speed of 1 ℃/min, being slowly warming up to 75 ℃ carries out oxygen and floats, be incubated 45 minutes, the draining of then lowering the temperature, then 50 ℃ of washings, acetic acid neutralization, 50 ℃ of hot water wash, cold water (room temperature) is washed, and dries.
The whiteness test of fabric: adopt the U.S. De Ta color DATACOLOR of company 750 type color measurement and color match instrument to test fabric whiteness, according to the assessment method of GB 8425-87 textiles instrument whiteness, folding 4 layers of sample, difference is respectively surveyed 4 times.The strength test of fabric: utilize YG (B) 0260D-500 type ultimate strength instrument to carry out bursting strength test to fabric.
Embodiment fabric: cotton 28tex (21
s) TOWEL
Table 1 embodiment bleaching liquid forms and the rear fabric property contrast of bleaching
Note: the bursting strength of grey cloth is 473.8N
Claims (8)
1. a low-temperature activated bleaching agent, composed of the following components according to percentage by weight said composition:
All the other are water.
2. a kind of low-temperature activated bleaching agent according to claim 1, is characterized in that: the structure of described cetylacetone metallic complex is:
Wherein M represents Mn (II)-(III), Co (II)-(III) or Fe (II)-(III).
3. a kind of low-temperature activated bleaching agent according to claim 1, is characterized in that: described organic solvent is diethylene glycol butyl ether, Dipropylene glycol mono-n-butyl Ether or diethylene glycol.
4. the preparation method of a kind of low-temperature activated bleaching agent according to claim 1, comprise: fatty alcohol-polyoxyethylene ether, organic solvent and water are mixed, then add cetylacetone metallic complex, under mechanical agitation, add acetic acid, adjusting pH is 5-6, then under room temperature, continue stirring 2-3 hour until generate transparent liquid, obtain low-temperature activated bleaching agent.
5. the application of a kind of low-temperature activated bleaching agent according to claim 1, is characterized in that: for the batch (-type) bleaching of COTTON FABRIC, concrete steps comprise:
(1) according to following component and concentration preparation bleaching liquid:
Low-temperature activated bleaching agent 1-4g/L;
NaOH 2-6g/L;
Hydrogen peroxide 6-15g/L;
All the other are water;
(2) by COTTON FABRIC according to the bleaching liquid that step (1) obtains of putting into of bath raio 1:10, be warming up to 70-85 ℃, bleaching 45-80min, then cooling washing.
6. the application of a kind of low-temperature activated bleaching agent according to claim 5, is characterized in that: in described step (1), the mass fraction of hydrogen peroxide is 35%.
7. the application of a kind of low-temperature activated bleaching agent according to claim 5, is characterized in that: the COTTON FABRIC of described step (2) is knitted fabric or woven.
8. the application of a kind of low-temperature activated bleaching agent according to claim 5, is characterized in that: during described step (2) cooling washing, first use the hot water wash of water temperature 50-60 ℃, the rear cold wash that is room temperature by temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210195006.XA CN102677449B (en) | 2012-06-13 | 2012-06-13 | Low-temperature activated bleaching agent as well as preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210195006.XA CN102677449B (en) | 2012-06-13 | 2012-06-13 | Low-temperature activated bleaching agent as well as preparation method and application thereof |
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| CN102677449A CN102677449A (en) | 2012-09-19 |
| CN102677449B true CN102677449B (en) | 2014-02-26 |
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| CN106032643A (en) * | 2015-03-13 | 2016-10-19 | 广东德美精细化工股份有限公司 | Scouring and bleaching process and scouring and bleaching liquid of pure cotton cheese |
| CN106032642A (en) * | 2015-03-13 | 2016-10-19 | 广东德美精细化工股份有限公司 | Flat continuous low-temperature pad batch scouring and bleaching process, scouring and bleaching liquid and application thereof |
| CN108729205A (en) * | 2017-04-15 | 2018-11-02 | 武鸣县南方制绳厂 | A kind of bleaching agent and preparation method thereof for sisal hemp |
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| EP0913515A1 (en) * | 1997-10-31 | 1999-05-06 | The Procter & Gamble Company | Process of bleaching fabrics |
| CN1181038C (en) * | 2002-12-20 | 2004-12-22 | 中国科学院广州化学研究所 | Method of catalyzing esterification of carboxylic acid and expoxy compound |
| CN101033182A (en) * | 2007-04-20 | 2007-09-12 | 北京化工大学 | Method of preparing palladium acetylacetonate |
| CN101922109B (en) * | 2010-09-14 | 2012-11-07 | 东华大学 | Method for low-temperature activated bleaching by using Schiff base metal complexes |
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