CN104233775B - A kind of cold bleaching method of cotton textiles or cotton-containing fabrics - Google Patents
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics Download PDFInfo
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- CN104233775B CN104233775B CN201410470083.0A CN201410470083A CN104233775B CN 104233775 B CN104233775 B CN 104233775B CN 201410470083 A CN201410470083 A CN 201410470083A CN 104233775 B CN104233775 B CN 104233775B
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- 238000004061 bleaching Methods 0.000 title claims abstract description 64
- 229920000742 Cotton Polymers 0.000 title claims abstract description 52
- 239000004744 fabric Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000004753 textile Substances 0.000 title claims abstract description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007844 bleaching agent Substances 0.000 claims abstract description 20
- 238000010792 warming Methods 0.000 claims abstract description 11
- 239000003607 modifier Substances 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 5
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 5
- FENRSEGZMITUEF-ATTCVCFYSA-E [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].OP(=O)([O-])O[C@@H]1[C@@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H]1OP(=O)([O-])[O-] Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].OP(=O)([O-])O[C@@H]1[C@@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H]1OP(=O)([O-])[O-] FENRSEGZMITUEF-ATTCVCFYSA-E 0.000 claims description 5
- 239000000467 phytic acid Substances 0.000 claims description 5
- 229940068041 phytic acid Drugs 0.000 claims description 5
- 235000002949 phytic acid Nutrition 0.000 claims description 5
- 229940083982 sodium phytate Drugs 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000001632 sodium acetate Substances 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 2
- 239000001509 sodium citrate Substances 0.000 claims description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 2
- 235000011083 sodium citrates Nutrition 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- 229940032158 sodium silicate Drugs 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 abstract description 12
- 230000006378 damage Effects 0.000 abstract description 4
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007800 oxidant agent Substances 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 11
- 239000012190 activator Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000004383 yellowing Methods 0.000 description 6
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- FRPJTGXMTIIFIT-UHFFFAOYSA-N tetraacetylethylenediamine Chemical compound CC(=O)C(N)(C(C)=O)C(N)(C(C)=O)C(C)=O FRPJTGXMTIIFIT-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 125000005256 alkoxyacyl group Chemical group 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- 102100040255 Tubulin-specific chaperone C Human genes 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- RASPWLYDBYZRCR-UHFFFAOYSA-N pyrrolidin-1-ium-2-one;chloride Chemical compound Cl.O=C1CCCN1 RASPWLYDBYZRCR-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 108010093459 tubulin-specific chaperone C Proteins 0.000 description 1
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- Detergent Compositions (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a kind of cold bleaching method of cotton textiles or cotton-containing fabrics, bleach system adds bleach-activating 1～4g/L, hydrogen peroxide 3～10g/L, bleaching stibilizer 2～6g/L, acid-base modifier 0.5～5g/L, will not bleach cotton or cotton-containing fabrics fabric and will put in dye bath by bath raio 1:10～100, be warming up to 30～70 DEG C with the programming rate of 0.5～3 DEG C/min, insulation 20～90min, finally washes white goods, dries or dry.The present invention adds the novel bleach-activating of acyl-oxygen base class in cotton or cotton-containing fabrics bleach system, makes bleach system to implement under cryogenic, improves oxidant bleach effect, compared with tradition oxygen bleaching system, and minimizing fabric damage while raising fabric whiteness.
Description
Technical field
The invention belongs to dyeing and finishing technique field, relate to a kind of cold bleaching method of cotton textiles or cotton-containing fabrics, this oxidation bleaching method is applicable to textile and containing cotton blended fabric cold bleaching.
Background technology
Cotton fiber is most important natural textile raw material, and cotton fiber has good water absorption, and wearability is excellent, it is easy to the advantage of dyeing, and its market share occupies the 50% of whole fiber total quantity consumed.But containing natural yellow impurity in natural cotton fiber, its pigment is mainly derived from some compounds containing chromophoric group, reduces the white appearance that cotton fiber is intrinsic.In addition the bafta of relaxed state is also easily subject in the course of processing pollution of lubricating oil, and these impurity typically require to be removed in bleaching process, and the desirable whiteness of providing cotton fabric is removed partial impurities simultaneously, improved water absorption.Hydrogen peroxide (H2O2) it is the most popular oxidative bleaches of bafta industrial bleaching, peroxide hydrogen radical anion (HO in bleaching process2 -) play main discoloration.Hydrogen peroxide bleaching is a kind of non-environmental-pollution, energy-efficient method for bleaching simultaneously, but hydrogen peroxide is difficult to play discoloration under low temperature, low ph condition, typically require and carry out when higher temperature (closely boiling), alkalescence (pH > 11) and long time treatment, bleaching action condition is violent, energy consumption, time-consuming and meeting major injury fiber.Under the situation that current environmental protection and energy saving consciousness strengthens gradually, manage to reduce bleaching temperature, improve bleaching efficiency, reduce energy consumption and production cost, be the development trend of hydrogen peroxide bleaching.
Having been developed over the hydrogen peroxide bleaching activator of multiple different structure both at home and abroad, the most frequently used at present have alkanoyl class activator, alkoxy acyl class activator and cationic N-acyl caprolactam class activator etc..Alkanoyl class activator, its representative kind is tetra acetyl ethylene diamine (TAED), but its water solublity is not high, slightly abnormal smells from the patient, and effective temperature is more than 70 DEG C, and hydrogen peroxide/TAED activation system bleaching efficiency when temperature is lower than 70 DEG C is not high；Alkoxy acyl class activator; its representative kind is nonanoyloxybenzene sulfonate (NOBS); but NOBS needs (pH > 10) application in the basic conditions; and most dependence on import; expensive; and preparation process adopts organic solvent such as toluene, acetone, alkane etc. mostly, do not meet ecological requirements；Cationic N-acyl caprolactam class activator; its representative kind is N-4 (triethyl ammonium methylene benzoyl group) caprolactam chloride (TBCC) and N-4 (triethyl ammonium methylene benzoyl group) butyrolactam chloride (TBBC); but it is unstable in the solution; so that can not deposit by solution state; can only deposit with solid-state; dissolving before use; this strongly limits its application in industry; and its synthesis cost is high; complex manufacturing, is only in conceptual phase at present.
Summary of the invention
The invention aims to overcome current cotton textiles and containing in cotton blended fabric bleaching process; conventional oxidation agent bleaching action condition is violent; fibre damage is serious; bleaching efficiency is not high, and power consumption is big, and cost is high; and most there is dissolubility difficulty in Low Temperature Bleaching Activator, environmental protection index is difficult to problem up to standard; there is provided one comparatively gentle efficient method for bleaching, thus it is injury-free to reach protection fiber, save the purpose of the energy.
For achieving the above object, the present invention adopts the following technical scheme that a kind of cold bleaching method of cotton textiles or cotton-containing fabrics, improves bafta oxidation bleaching condition with activator, and step is as follows:
Bleach system adds bleach-activating 1～4g/L, hydrogen peroxide 3～10g/L, bleaching stibilizer 2～6g/L, acid-base modifier 0.5～5g/L, cotton or cotton-containing fabrics fabric will do not bleached and put in dye bath by bath raio 1:10～100, it is warming up to 30～70 DEG C with the programming rate of 0.5～3 DEG C/min, is incubated 20～90min, finally white goods is washed, dried or dry.
The structure of described bleach-activating is as follows:
In formula, R is COONa, COOK, SO3Na、SO3The one of K, m=1～14, n=1～9；
Described bleaching stibilizer is one or more mixture of sodium silicate, phytic acid, sodium phytate.
Described acid-base modifier is one or more mixture in sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium acetate, sodium citrate.
Cotton will do not bleached or cotton-containing fabrics is put into described in 1 already with in the bleach residue crossed, and add hydrogen peroxide 1～4g/L, fabric can be made again to obtain good bleaching effect.
Beneficial effects of the present invention: the present invention adds the novel bleach-activating of acyl-oxygen base class in cotton or cotton-containing fabrics bleach system, bleach system is made to implement under cryogenic, improve oxidant bleach effect, compared with tradition oxygen bleaching system, while improving fabric whiteness, reduce fabric damage.
Detailed description of the invention
Embodiment 1
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (Shangyu Jie Hua Chemical Co., Ltd., structural formula is the novel bleach-activating of acyl-oxygen base class), sodium silicate, sodium carbonate, bafta is put in bleaching liquid by bath raio 1:30, is warming up to 30 DEG C with the programming rate of 2 DEG C/min, be incubated 60min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 2
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (Shangyu Jie Hua Chemical Co., Ltd., structural formula is the novel bleach-activating of acyl-oxygen base class), sodium silicate, sodium bicarbonate, bafta is put in bleaching liquid by bath raio 1:50, is warming up to 30 DEG C with the programming rate of 2 DEG C/min, be incubated 60min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 3
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (Shangyu Jie Hua Chemical Co., Ltd., structural formula is the novel bleach-activating of acyl-oxygen base class), sodium phytate, sodium carbonate and sodium carbonate, bafta is put in bleaching liquid by bath raio 1:40, is warming up to 50 DEG C with the programming rate of 2 DEG C/min, be incubated 60min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 4
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (structural formula is the novel bleach-activating of acyl-oxygen base class), phytic acid, sodium carbonate, bafta is put in bleaching liquid by bath raio 1:60, is warming up to 50 DEG C with the programming rate of 2 DEG C/min, be incubated 60min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 5
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (structural formula is the novel bleach-activating of acyl-oxygen base class), sodium phytate, phytic acid, sodium carbonate, sodium bicarbonate, bafta is put in bleaching liquid by bath raio 1:50, is warming up to 70 DEG C with the programming rate of 2 DEG C/min, be incubated 60min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 6
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (structural formula is the novel bleach-activating of acyl-oxygen base class), phytic acid, sodium bicarbonate, by fabric (laboratory refine 170g/m2Cotton fabrics) put in bleaching liquid by bath raio 1:70, it is warming up to 70 DEG C with the programming rate of 2 DEG C/min, is incubated 60min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 7
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (structural formula is the novel bleach-activating of acyl-oxygen base class), sodium silicate, sodium acetate, bafta is put in bleaching liquid by bath raio 1:10, is warming up to 30 DEG C with the programming rate of 0.5 DEG C/min, be incubated 90min, finally white goods is washed, dried.
Bleaching prescription is as follows:
Embodiment 8
A kind of cold bleaching method of cotton textiles or cotton-containing fabrics, its process is as follows: adding hydrogen peroxide in bleach system, (structural formula is the novel bleach-activating of acyl-oxygen base class), sodium phytate, sodium acetate, bafta is put in bleaching liquid by bath raio 1:100, is warming up to 70 DEG C with the programming rate of 3 DEG C/min, be incubated 20min, finally white goods is washed, dried.
Bleaching prescription is as follows:
The implementation result of the present invention
It after embodiment 1～8 bleaching, is tested by bafta respectively as follows, and test result is in Table 1.
1) Hunter whiteness (WI)
In the upper mensuration of UltraScanPRO colour photometer (HunterLab company of the U.S.), adopting D65 light source and 10 ° of viewing angles to observe, Hunter whiteness (WI) Hunter formula calculates:
WI=100-[(100-L)2+a2+b2]1/2(1)
2) Hunter yellowing (YI)
In the upper mensuration of UltraScanPRO colour photometer (HunterLab company of the U.S.), adopting D65 light source and 10 ° of viewing angles to observe, Hunter yellowing (YI) Hunter formula calculates:
3) strength loss
Strength test is pressed GB/T3923-1997 " textile fabric tensile property part 1: the mensuration galley proof method of ultimate strength and extension at break " and is measured on Nantong Hongda Experiment Instruments Co., Ltd. HD026H electronic fabric strength tester, and the strength loss after fabric bleaching calculates by formula (3):
In formula: S1 is the brute force before fabric bleaching, S2 is the brute force after fabric bleaching.
The test result of bleaching bafta implemented by table 1
| Embodiment | WI | YI | Strength loss (%) |
| Former cloth | 80.48 | 54.29 | 0 |
| Tradition hydrogen peroxide bleaching | 88.47 | 48.81 | 8.63 |
| Embodiment 1 | 90.58 | 47.07 | 5.54 |
| Embodiment 2 | 91.17 | 46.55 | 4.21 |
| Embodiment 3 | 90.58 | 47.07 | 5.92 |
| Embodiment 4 | 89.25 | 48.21 | 3.55 5 --> |
| Embodiment 5 | 92.19 | 45.47 | 4.89 |
| Embodiment 6 | 92.12 | 45.65 | 4.68 |
| Embodiment 7 | 91.92 | 48.15 | 4.52 |
| Embodiment 8 | 90.36 | 46.88 | 4.72 |
As shown in Table 1, the whiteness of cold bleaching bafta is slightly above traditional hydrogen peroxide bleaching process, and the strength loss of fabric is lower than traditional handicraft, and the feature that cold bleaching technique has higher whiteness, yellowing is low, strength loss is little is described.As can be seen here, technical scheme provided by the present invention is capable of the bleaching of bafta cryogenic conditions.
Claims (2)
1. the cold bleaching method of cotton textiles or cotton-containing fabrics, it is characterised in that step is as follows:
Bleach system adds bleach-activating 1～4g/L, hydrogen peroxide 3～10g/L, bleaching stibilizer 2～6g/L, acid-base modifier 0.5～5g/L, cotton or cotton-containing fabrics fabric will do not bleached and put in dye bath by bath raio 1:10～100, it is warming up to 30～70 DEG C with the programming rate of 0.5～3 DEG C/min, is incubated 20～90min, finally white goods is washed, dried or dry；
The structure of described bleach-activating is as follows:
In formula, R is COONa, COOK, SO3Na or SO3K, m=1～14, n=1～9；
Described bleaching stibilizer is one or more mixture of sodium silicate, phytic acid, sodium phytate；
Cotton will do not bleached or cotton-containing fabrics is put into already with in the bleach residue crossed, and add hydrogen peroxide 1～4g/L, fabric can be made again to obtain good bleaching effect.
2. the cold bleaching method of cotton textiles according to claim 1 or cotton-containing fabrics, it is characterised in that: described acid-base modifier is one or more mixture in sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium acetate, sodium citrate.
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| CN104594017A (en) * | 2015-02-05 | 2015-05-06 | 南通市玉扬色织有限公司 | Low-temperature bleaching process for pure-cotton knitted fabrics |
| CN104911893B (en) * | 2015-05-29 | 2018-02-16 | 上海市纺织科学研究院 | Formula and its processing method for the bleaching agent for unchlorine of polyesteramide textile material |
| CN105019220A (en) * | 2015-08-17 | 2015-11-04 | 江苏联发纺织股份有限公司 | Baffeta low-temperature neutral-approaching bleaching method |
| CN107460594B (en) * | 2017-09-20 | 2019-12-20 | 张伟夫 | Novel yarn-dyed printed and dyed fabric and preparation method thereof |
| CN113026339B (en) * | 2021-04-12 | 2023-06-20 | 中国农业科学院兰州畜牧与兽药研究所 | Decoloring method for yak hair |
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| CN103173990B (en) * | 2013-02-14 | 2015-06-17 | 上海秋橙新材料科技有限公司 | Bleaching liquid and bleaching method for acrylic cotton blended fabric |
| CN103173993B (en) * | 2013-02-14 | 2015-04-29 | 上海秋橙新材料科技有限公司 | Bleaching liquid and bleaching method for dacron cotton blended fabric |
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