CN1408938A - Use of urea peroxide in textile bleaching - Google Patents
Use of urea peroxide in textile bleaching Download PDFInfo
- Publication number
- CN1408938A CN1408938A CN 02130037 CN02130037A CN1408938A CN 1408938 A CN1408938 A CN 1408938A CN 02130037 CN02130037 CN 02130037 CN 02130037 A CN02130037 A CN 02130037A CN 1408938 A CN1408938 A CN 1408938A
- Authority
- CN
- China
- Prior art keywords
- bleaching
- urea peroxide
- carbamide peroxide
- temperature
- textile
- 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.)
- Granted
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 27
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000004753 textile Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000007864 aqueous solution Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 239000007844 bleaching agent Substances 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 229940078916 carbamide peroxide Drugs 0.000 abstract 4
- 238000009835 boiling Methods 0.000 abstract 1
- 230000009972 noncorrosive effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229960001922 sodium perborate Drugs 0.000 description 2
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 2
- 229920002955 Art silk Polymers 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000000253 Denture Cleanser Substances 0.000 description 1
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 1
- 229960002218 sodium chlorite Drugs 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
Abstract
本发明是一种过氧化脲在纺织品漂白中的应用技术，其漂白工艺过程为：将过氧化脲配制成水溶液，升温并调整pH值在碱性条件，将纺织品投入其中保持温度数小时，取出织物洗净晾干。本发明在不增加现有设备的前提下采用过氧化脲为漂白剂，用一步煮浴法代替传统的两步或三步漂白方法，在一定温度下均匀平衡放氧，氧的利用效率明显增加，由于过氧化脲活性氧含量高，一般在16％左右(相当于34％的过氧化氢)，一般条件下不易分解，无腐蚀性、漂白时间短，漂白液可重复使用，因而综合成本也较低。The present invention is an application technology of carbamide peroxide in textile bleaching. The bleaching process is as follows: prepare carbamide peroxide into an aqueous solution, raise the temperature and adjust the pH value under alkaline conditions, put textiles into it and keep the temperature for several hours, take out Fabric wash and dry. The present invention uses carbamide peroxide as the bleaching agent without increasing the existing equipment, replaces the traditional two-step or three-step bleaching method with one-step boiling bath method, and evenly balances oxygen release at a certain temperature, and the utilization efficiency of oxygen is significantly increased , due to the high active oxygen content of carbamide peroxide, generally around 16% (equivalent to 34% hydrogen peroxide), it is not easy to decompose under general conditions, non-corrosive, short bleaching time, and the bleaching solution can be reused, so the overall cost is also low. lower.
Description
Technical field
The invention belongs to the application of inorganic compound in textile industry, the application of particularly a kind of urea peroxide in textile bleaching.
Background technology
Before textile dyeing and finishing in the processing process, traditional handicraft is destarch, kiering, bleaching, three bathe three step process, what present domestic application was more is the two-stage process of kiering after the first destarch/bleaching unification, and the bleaching agent of use has oxygen-bearing bleaching agent, as hydrogen peroxide, sodium perborate, chlorine bleaches, as sodium chlorite and clorox, the bleaching agent that existing textile industry is used and the process route of employing all have obvious deficiency, and chlorine bleaches is because the whiteness that chlorine floats is general, easily yellowing, not only fiber there is infringement, also easily emits harmful body, contaminated environment aborning, corrosion to equipment is also relatively more serious, hydrogen peroxide bleaching whiteness height, free from environmental pollution, price is also moderate, but the kiering time is oversize, generally will be more than 4 hours, extremely unstable under alkali condition, in addition, hydrogen peroxide is in a liquid state, belong to the highly corrosive material again, storage and transportation are all dangerous, difficulty, storage period is extremely short; Sodium perborate oxygen content low (9.5-10%), price is more expensive, is not soluble in cold water, and boron element has harm to crops simultaneously, easily contaminated environment.Urea peroxide is a kind of white crystalline solid material, be easy to storage, transportation, nontoxic, tasteless, general condition is difficult for down decomposing, about its application, mainly be to be used for dental bleaching at present, as Chinese patent: " film for whitening teeth " (96118605.4), " denture cleanser " (98113475.0) are disclosed to be prescription and the method that urea peroxide is used for dental bleaching.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing textile-bleaching agent on using, the application process of a kind of urea peroxide in textile bleaching is provided.The present invention realizes by following scheme:
The application of urea peroxide in textile bleaching, its bleaching process process is: urea peroxide is mixed with the aqueous solution, intensification is also adjusted pH value at alkali condition, the textiles input is wherein kept temperature a few hours, the taking-up fabric is cleaned and is dried, and weight percent concentration the best of the above-mentioned urea peroxide aqueous solution is 0.2-1%, and the optimum condition of above-mentioned bleaching process is: temperature 80-100 ℃, pH value 9-10, bleaching time 0.5-2 hour.
The present invention adopts urea peroxide under the prerequisite that does not increase existing equipment be bleaching agent, boil the bath method with a step and replace two traditional step or three one-Step bleach methods, uniform balance is put oxygen at a certain temperature, the utilization ratio of oxygen obviously increases, because urea peroxide active o content height generally (is equivalent to 34% hydrogen peroxide) about 16%, general condition is difficult for down decomposing, non-corrosiveness, bleaching time weak point, bleaching liquid is reusable, thereby integrated cost is also lower.
The specific embodiment
Embodiment 1:
21 cotton yarns (or fabric) are put into 0.4% (weight) urea peroxide aqueous solution, temperature remains on more than 80 ℃, keeps 1-2 hour, takes out to clean and dries (or oven dry), testing result: whiteness (ZBD) 67.8-70.4 (GB17644-1999), intensity (N/10cm) 862.4 (radially); 729.1 (broadwise) (GB/3923.1-1977).
Embodiment 2:
Linen is put into 0.6% (weight) urea peroxide aqueous solution, adjust pH value 9-10, temperature remains on 100 ℃, keeps 0.5-1 hour, takes out to clean and dries (or oven dry), testing result: whiteness (ZBD): 70.4.
In addition, this method can be fit to the bleaching of cotton products, chemical fibre, artificial silk, flax and woollen fabrics, all carries out corresponding experiment, and bleaching effect is good.
Claims (3)
1. the application of urea peroxide in textile bleaching is characterized in that its bleaching process process for urea peroxide is mixed with the aqueous solution, heats up also to adjust pH value at alkali condition, and the textiles input is wherein kept temperature a few hours, takes out fabric and cleans and dries.
2. the application of urea peroxide as claimed in claim 1 in textile bleaching is characterized in that weight percent concentration the best of the above-mentioned urea peroxide aqueous solution is 0.2-1%.
3. the application of urea peroxide as claimed in claim 1 in textile bleaching is characterized in that the optimum condition of above-mentioned bleaching process is: temperature 80-100 ℃, and pH value 9-10, bleaching time 0.5-2 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021300372A CN1185384C (en) | 2002-08-09 | 2002-08-09 | Use of urea peroxide in textile bleaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021300372A CN1185384C (en) | 2002-08-09 | 2002-08-09 | Use of urea peroxide in textile bleaching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1408938A true CN1408938A (en) | 2003-04-09 |
| CN1185384C CN1185384C (en) | 2005-01-19 |
Family
ID=4746376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021300372A Expired - Fee Related CN1185384C (en) | 2002-08-09 | 2002-08-09 | Use of urea peroxide in textile bleaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1185384C (en) |
-
2002
- 2002-08-09 CN CNB021300372A patent/CN1185384C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1185384C (en) | 2005-01-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |