CN104047156B - A kind of cashmere cold bleaching agent and method for bleaching thereof - Google Patents
A kind of cashmere cold bleaching agent and method for bleaching thereof Download PDFInfo
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- CN104047156B CN104047156B CN201410304627.6A CN201410304627A CN104047156B CN 104047156 B CN104047156 B CN 104047156B CN 201410304627 A CN201410304627 A CN 201410304627A CN 104047156 B CN104047156 B CN 104047156B
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- 210000000085 cashmere Anatomy 0.000 title claims abstract description 65
- 238000004061 bleaching Methods 0.000 title claims abstract description 44
- 239000007844 bleaching agent Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 30
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 21
- 239000008103 glucose Substances 0.000 claims abstract description 21
- 230000003647 oxidation Effects 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 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 claims abstract description 14
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 13
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 12
- 239000011734 sodium Substances 0.000 claims abstract description 12
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 claims abstract description 8
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 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 claims abstract description 7
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 235000019387 fatty acid methyl ester Nutrition 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 7
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 7
- 239000012266 salt solution Substances 0.000 claims abstract description 7
- 235000019795 sodium metasilicate Nutrition 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims abstract description 7
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000000835 fiber Substances 0.000 claims description 37
- 239000000284 extract Substances 0.000 claims description 23
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 6
- 239000011790 ferrous sulphate Substances 0.000 claims description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 6
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 6
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 6
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 239000003599 detergent Substances 0.000 description 5
- -1 sodium alkyl sulfonate Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004383 yellowing Methods 0.000 description 3
- 241000283707 Capra Species 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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- Detergent Compositions (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The method of bleaching is carried out in the agent of cashmere cold bleaching, wherein employs 1% fatty acid methyl ester ethoxylate sulfonate in metal salt solution, and oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L, tetraacetyl ethylene diamine 8g/L, glucose 3g/L, tertiary sodium phosphate 2.5? g/L, ethylene glycol monobutyl ether 0.5? g/L; Does reducing bleach liquid comprise thiourea dioxide 3? g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1? g/L, sodium metasilicate 2? g/L, vulcanized sodium 1? g/L.Adopt cold bleaching agent of the present invention and method for bleaching thereof, effectively can improve the whiteness of cashmere, reduce the damage of cashmere, and after bleaching, the yellowness index of cashmere is low.
Description
Technical field
The present invention relates to fiber bleached technical field, especially the agent of cashmere cold bleaching and method for bleaching.
Background technology
Goat cashmere is a kind of textile raw material of preciousness, and natural goat cashmere has the multiple colors such as white, blue or green, purple, brown, and wherein most precious is white, therefore needs to carry out bleaching to cashmere.But, bleaching agent of the prior art and bleaching process cost high, comparatively large to the damage of fiber, and the easy yellowing of cashmere fiber after bleaching.Therefore, seek bleaching agent under low temperature and method for bleaching to reduce the damage to fiber, just become current important problem.
Summary of the invention
In order to reduce the damage of cashmere, improve fibre whiteness, the invention provides the agent of a kind of cashmere cold bleaching, it comprises: 30% hydrogen peroxide, tetraacetyl ethylene diamine, glucose, tertiary sodium phosphate, ethylene glycol monobutyl ether.
Preferably, 30% hydrogen peroxide 10-20g/L, tetraacetyl ethylene diamine 5-10g/L, glucose 2-5g/L, tertiary sodium phosphate 2-3g/L, ethylene glycol monobutyl ether 0.2-1g/L.
More preferably, 30% hydrogen peroxide 15g/L, tetraacetyl ethylene diamine 8g/L, glucose 3g/L, tertiary sodium phosphate 2.5g/L, ethylene glycol monobutyl ether 0.5g/L.
Present invention also offers the method that the agent of a kind of cashmere cold bleaching is carried out bleaching, comprise the following steps:
(1) cashmere fiber is placed in metal salt solution and carries out preliminary treatment; bath raio 1:30; start after cashmere complete wetting to heat up; programming rate is 1 DEG C/min; be increased to temperature 75 DEG C, temperature retention time 25min, described slaine comprises 10% ferrous sulfate; 2% sodium hydrogensulfite, 1% fatty acid methyl ester ethoxylate sulfonate;
(2) pretreated for slaine cashmere fiber is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
(3) added in oxidation bleaching liquid by the cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 60 C, time 30min, described oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L; tetraacetyl ethylene diamine 8g/L; glucose 3g/L, tertiary sodium phosphate 2.5g/L, ethylene glycol monobutyl ether 0.5g/L;
(4) cashmere fiber after oxidation bleaching carries out three washings, and wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
(5) added in reducing bleach liquid by the cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 45 C; time 30min, described reducing bleach liquid comprises thiourea dioxide 3g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1g/L, sodium metasilicate 2g/L, vulcanized sodium 1g/L;
(6) cashmere is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts and drying in 50 DEG C of hot blasts.
Wherein, can also comprise before described step (1), clear water cashmere being placed in bath raio 1:50 infiltrates, and then add sodium alkyl sulfonate 2-5g/L, detergent LS0.1-2g/L obtains treatment fluid, and the pH value for the treatment of fluid is adjusted to 7-7.5, is then elevated to 55-65 DEG C with the programming rate of 1-2 DEG C/min, keep 10min, then cooling washing three times, wherein once, cold water washing twice; bath raio is respectively 1:45, extracts in 45 DEG C of warm water washings.
Compared with hydrogen peroxide bleaching agent of the prior art, present invention adds tetraacetyl ethylene diamine, glucose, tertiary sodium phosphate, ethylene glycol monobutyl ether, wherein tetraacetyl ethylene diamine makes hydrogen peroxide have higher activity under low-temperature condition, and there is in glucose aldehyde radical, conveniently understand, after glucose adds can directly and hydrogen peroxide react, reduce the significant degree of hydrogen peroxide bleaching, but bleaching agent of the present invention uses under cryogenic, and have tetraacetyl ethylene diamine, tertiary sodium phosphate, the synergy of ethylene glycol monobutyl ether, at this, the not single validity not reducing hydrogen peroxide of glucose, make the oxidation of hydrogen peroxide more stable on the contrary, effectively, thus improve bleaching effect, effectively reduce the damage of cashmere.
When using the agent of above-mentioned cashmere cold bleaching to bleach, employing fatty acid methyl ester ethoxylate sulfonate in slaine preprocessing process, enabling metal ion enter fibrous inside, bleaching more thorough; Cold bleaching agent improves bleaching effect, effectively reduces the damage of cashmere; Invention also uses novel reducing bleach, thiourea dioxide 3g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1g/L, sodium metasilicate 2g/L, vulcanized sodium 1g/L, under the low temperature of 45 DEG C, reducing bleach is carried out to cashmere, greatly reduce cashmere bleaching after yellowing.
The concentration occurred in present specification, specification digest, claims, wt% is the percentage by weight relative to fiber, and all the other are mass concentration, and percentage is weight percentage.
Detailed description of the invention
Below in conjunction with specific embodiment, more detailed introduction is carried out to technical scheme of the present invention, but protection scope of the present invention is not limited thereto.
embodiment 1:
Clear water cashmere being placed in bath raio 1:50 infiltrates, and then add sodium alkyl sulfonate 2g/L, detergent LS2g/L obtains treatment fluid, and the pH value for the treatment of fluid is adjusted to 7-7.5, is then elevated to 55 DEG C with the programming rate of 1 DEG C/min, keep 10min, then cooling washing three times, wherein once, cold water washing twice; bath raio is respectively 1:45, extracts in 45 DEG C of warm water washings.
Cashmere fiber is placed in metal salt solution and carries out preliminary treatment, bath raio 1:30, temperature 75 DEG C, time 25min, described slaine comprises 10% ferrous sulfate, 2% sodium hydrogensulfite, 1% fatty acid methyl ester ethoxylate sulfonate;
Pretreated for slaine cashmere fiber is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in oxidation bleaching liquid by cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 60 C, time 30min, described oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L; tetraacetyl ethylene diamine 8g/L; glucose 3g/L, tertiary sodium phosphate 2.5g/L, ethylene glycol monobutyl ether 0.5g/L;
Cashmere fiber after oxidation bleaching carries out three washings, and wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in reducing bleach liquid by cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 45 C; time 30min, described reducing bleach liquid comprises thiourea dioxide 3g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1g/L, sodium metasilicate 2g/L, vulcanized sodium 1g/L;
Cashmere is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts and drying in 50 DEG C of hot blasts.
embodiment 2:
Clear water cashmere being placed in bath raio 1:50 infiltrates, and then add sodium alkyl sulfonate 5g/L, detergent LS0.1g/L obtains treatment fluid, and the pH value for the treatment of fluid is adjusted to 7-7.5, is then elevated to 65 DEG C with the programming rate of 1 DEG C/min, keep 10min, then cooling washing three times, wherein once, cold water washing twice; bath raio is respectively 1:45, extracts in 45 DEG C of warm water washings.
Cashmere fiber is placed in metal salt solution and carries out preliminary treatment, bath raio 1:30, temperature 75 DEG C, time 25min, described slaine comprises 10% ferrous sulfate, 2% sodium hydrogensulfite;
Pretreated for slaine cashmere fiber is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in oxidation bleaching liquid by cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 60 C, time 30min, described oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L; tetraacetyl ethylene diamine 8g/L; glucose 3g/L, tertiary sodium phosphate 2.5g/L, ethylene glycol monobutyl ether 0.5g/L;
Cashmere fiber after oxidation bleaching carries out three washings, and wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in reducing bleach liquid by cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 45 C; time 30min, described reducing bleach liquid comprises thiourea dioxide 3g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1g/L, sodium metasilicate 2g/L, vulcanized sodium 1g/L;
Cashmere is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts and drying in 50 DEG C of hot blasts.
embodiment 3:
Clear water cashmere being placed in bath raio 1:50 infiltrates, and then add sodium alkyl sulfonate 3g/L, detergent LS1g/L obtains treatment fluid, and the pH value for the treatment of fluid is adjusted to 7-7.5, is then elevated to 55-65 DEG C with the programming rate of 2 DEG C/min, keep 10min, then cooling washing three times, wherein once, cold water washing twice; bath raio is respectively 1:45, extracts in 45 DEG C of warm water washings.
Cashmere fiber is placed in metal salt solution and carries out preliminary treatment, bath raio 1:30, temperature 75 DEG C, time 25min, described slaine comprises 10% ferrous sulfate, 2% sodium hydrogensulfite, 1% fatty acid methyl ester ethoxylate sulfonate;
Pretreated for slaine cashmere fiber is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in oxidation bleaching liquid by cashmere fiber after extracting and bleach, bath raio 1:30, programming rate is 1 DEG C/min, be increased to temperature 60 C, time 30min, described oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L, tetraacetyl ethylene diamine 8g/L, tertiary sodium phosphate 2.5g/L;
Cashmere fiber after oxidation bleaching carries out three washings, and wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in reducing bleach liquid by cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 45 C; time 30min, described reducing bleach liquid comprises thiourea dioxide 3g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1g/L, sodium metasilicate 2g/L, vulcanized sodium 1g/L;
Cashmere is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts and drying in 50 DEG C of hot blasts.
embodiment 4:
Clear water cashmere being placed in bath raio 1:50 infiltrates, and then add sodium alkyl sulfonate 2g/L, detergent LS2g/L obtains treatment fluid, and the pH value for the treatment of fluid is adjusted to 7-7.5, is then elevated to 55-65 DEG C with the programming rate of 2 DEG C/min, keep 10min, then cooling washing three times, wherein once, cold water washing twice; bath raio is respectively 1:45, extracts in 45 DEG C of warm water washings.
Cashmere fiber is placed in metal salt solution and carries out preliminary treatment, bath raio 1:30, temperature 75 DEG C, time 25min, described slaine comprises 10% ferrous sulfate, 2% sodium hydrogensulfite, 1% fatty acid methyl ester ethoxylate sulfonate;
Pretreated for slaine cashmere fiber is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in oxidation bleaching liquid by cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 60 C, time 30min, described oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L; tetraacetyl ethylene diamine 8g/L; glucose 3g/L, tertiary sodium phosphate 2.5g/L, ethylene glycol monobutyl ether 0.5g/L;
Cashmere fiber after oxidation bleaching carries out three washings, and wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
Added in reducing bleach liquid by cashmere fiber after extracting and bleach, bath raio 1:30, programming rate is 1 DEG C/min, is increased to temperature 45 C, time 30min, and described reducing bleach liquid comprises thiourea dioxide 3g/L, sodium hydrosulfite 6g/L;
Cashmere is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts and drying in 50 DEG C of hot blasts.
Use whiteness instrument to measure the whiteness value Wr of the rear fiber of bleaching, and on whiteness instrument, read X, Y, Z tristimulus values calculating yellowness index YI=100*(X-Z)/Y, measure alkali solubility according to IWTO experimental technique 4-60E.Experimental result comparison is in table 1
Table 1
| Whiteness | Yellowness index | Alkali solubility | |
| Former suede | 25.76 | 18.73 | 18.32% |
| Embodiment 1 | 71.02 | 20.12 | 21.03% |
| Embodiment 2 | 62.23 | 26.15 | 27.42% |
| Embodiment 3 | 58.26 | 23.45 | 26.37% |
| Embodiment 4 | 57.45 | 24.03 | 26.42% |
As can be seen here, bleaching agent of the present invention and method for bleaching can obtain whiteness higher, damage less, the cashmere of more not easily yellowing.
The above is the preferred embodiment of the present invention, it should be pointed out that the general technical staff for the art, and under the premise without departing from the principles of the invention, can also make improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (1)
1. use the agent of cashmere cold bleaching to carry out the method for bleaching, the agent of described cashmere cold bleaching comprises: 30% hydrogen peroxide, tetraacetyl ethylene diamine, glucose, tertiary sodium phosphate, and ethylene glycol monobutyl ether is characterized in that comprising the following steps:
(1) cashmere fiber is placed in metal salt solution and carries out preliminary treatment; bath raio 1:30; start after cashmere complete wetting to heat up; programming rate is 1 DEG C/min; be increased to temperature 75 DEG C, temperature retention time 25min, described slaine comprises 10% ferrous sulfate; 2% sodium hydrogensulfite, 1% fatty acid methyl ester ethoxylate sulfonate;
(2) pretreated for slaine cashmere fiber is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
(3) added in oxidation bleaching liquid by the cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 60 C, time 30min, described oxidation bleaching solution comprises 30% hydrogen peroxide 15g/L; tetraacetyl ethylene diamine 8g/L; glucose 3g/L, tertiary sodium phosphate 2.5g/L, ethylene glycol monobutyl ether 0.5g/L;
(4) cashmere fiber after oxidation bleaching carries out three washings, and wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts;
(5) added in reducing bleach liquid by the cashmere fiber after extracting and bleach; bath raio 1:30; programming rate is 1 DEG C/min; be increased to temperature 45 C; time 30min, described reducing bleach liquid comprises thiourea dioxide 3g/L, isomerous tridecanol polyoxyethylene ether 1g/L, glucose 1g/L, sodium metasilicate 2g/L, vulcanized sodium 1g/L;
(6) cashmere is carried out three washings, wherein 45 DEG C of warm water washings once, cold water washing twice, and bath raio is respectively 1:45, extracts and drying in 50 DEG C of hot blasts.
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| CN201510694211.4A CN105177983A (en) | 2014-06-30 | 2014-06-30 | Cashmere blanching method |
| CN201410304627.6A CN104047156B (en) | 2014-06-30 | 2014-06-30 | A kind of cashmere cold bleaching agent and method for bleaching thereof |
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| CN109183387B (en) * | 2018-09-28 | 2020-08-21 | 河南工程学院 | Low-temperature neutral reduction bleaching method for protein fiber |
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| CA3128194C (en) | 2019-01-31 | 2024-05-14 | Ecolab Usa Inc. | Controller for a rinse water reuse system and methods of use |
| 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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- 2014-06-30 CN CN201510694211.4A patent/CN105177983A/en active Pending
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| GB828096A (en) * | 1956-02-14 | 1960-02-17 | Celanese Corp | A process for stabilising and bleaching cellulose ester fabrics |
| CN101705612A (en) * | 2009-11-26 | 2010-05-12 | 萧山区质量计量监测中心 | Method for bleaching grey down feather |
| CN102071567A (en) * | 2010-12-21 | 2011-05-25 | 东华大学 | Method for bleaching human hair fibers at low temperature with low damage |
| CN102587121A (en) * | 2012-02-09 | 2012-07-18 | 武汉新华扬生物股份有限公司 | Solid low-temperature pretreatment compound preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105177983A (en) | 2015-12-23 |
| CN104047156A (en) | 2014-09-17 |
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