CN102634855B - Natural nanometer material composition for one-bath degumming and bleaching of fibrilia - Google Patents
Natural nanometer material composition for one-bath degumming and bleaching of fibrilia Download PDFInfo
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- CN102634855B CN102634855B CN2012100960986A CN201210096098A CN102634855B CN 102634855 B CN102634855 B CN 102634855B CN 2012100960986 A CN2012100960986 A CN 2012100960986A CN 201210096098 A CN201210096098 A CN 201210096098A CN 102634855 B CN102634855 B CN 102634855B
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- nanometer material
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- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 238000004061 bleaching Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title abstract 4
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000004927 clay Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 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 6
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 6
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 6
- 239000011734 sodium Substances 0.000 claims abstract description 6
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 6
- XPHPXWXHZSMOTP-UHFFFAOYSA-N C(=O)(O)CCC(C(=S)O)CC(=O)O.[Na] Chemical compound C(=O)(O)CCC(C(=S)O)CC(=O)O.[Na] XPHPXWXHZSMOTP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 4
- 150000003333 secondary alcohols Chemical class 0.000 claims abstract description 4
- 241000208202 Linaceae Species 0.000 claims description 20
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 20
- 239000002086 nanomaterial Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- -1 Alkyl polysaccharide glycosides Chemical class 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 229930182470 glycoside Natural products 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229920001282 polysaccharide Polymers 0.000 claims description 5
- 239000005017 polysaccharide Substances 0.000 claims description 5
- BPSYZMLXRKCSJY-UHFFFAOYSA-N 1,3,2-dioxaphosphepan-2-ium 2-oxide Chemical compound O=[P+]1OCCCCO1 BPSYZMLXRKCSJY-UHFFFAOYSA-N 0.000 claims description 4
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims description 4
- QOUJVMYUVAQNQM-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid;sodium Chemical compound [Na].OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O QOUJVMYUVAQNQM-UHFFFAOYSA-N 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- QILXPCHTWXAUHE-UHFFFAOYSA-N [Na].NCCN Chemical compound [Na].NCCN QILXPCHTWXAUHE-UHFFFAOYSA-N 0.000 claims description 4
- JZWFDVDETGFGFC-UHFFFAOYSA-N salacetamide Chemical group CC(=O)NC(=O)C1=CC=CC=C1O JZWFDVDETGFGFC-UHFFFAOYSA-N 0.000 claims description 4
- 239000001632 sodium acetate Substances 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 235000011121 sodium hydroxide Nutrition 0.000 abstract description 6
- 244000025254 Cannabis sativa Species 0.000 abstract description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 abstract description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 abstract description 2
- 235000009120 camo Nutrition 0.000 abstract description 2
- 235000005607 chanvre indien Nutrition 0.000 abstract description 2
- 239000011487 hemp Substances 0.000 abstract description 2
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 abstract 1
- PQHYOGIRXOKOEJ-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O PQHYOGIRXOKOEJ-UHFFFAOYSA-N 0.000 abstract 1
- ATBRJKHXJCLVNL-UHFFFAOYSA-N [N-2]CC[N-2].[Na+].[Na+].[Na+].[Na+] Chemical compound [N-2]CC[N-2].[Na+].[Na+].[Na+].[Na+] ATBRJKHXJCLVNL-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 239000013530 defoamer Substances 0.000 abstract 1
- HNEHZSYNRQOVKW-UHFFFAOYSA-N ethane-1,1-diamine;ethene;sodium Chemical group [Na].C=C.CC(N)N HNEHZSYNRQOVKW-UHFFFAOYSA-N 0.000 abstract 1
- 239000008213 purified water Substances 0.000 abstract 1
- 239000012752 auxiliary agent Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000003287 bathing Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- 239000004480 active ingredient Substances 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 235000019795 sodium metasilicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- 239000008235 industrial water Substances 0.000 description 3
- 241000722949 Apocynum Species 0.000 description 2
- 240000008564 Boehmeria nivea Species 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 244000099147 Ananas comosus Species 0.000 description 1
- 235000007119 Ananas comosus Nutrition 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 235000008708 Morus alba Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 244000274883 Urtica dioica Species 0.000 description 1
- 235000009108 Urtica dioica Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Abstract
The invention relates to the field of auxiliaries with functions of degumming and bleaching fibrilia, in particular to a natural nanometer material composition for one-bath degumming and bleaching of fibrilia. The natural nanometer material composition consists of components including, in weight percent, one or two of nanometer clay, sodium carboxyethyl thiosuccinic acid and ethylene diamine tetra sodium, one or two of iminodisuccinic acid and sodium ethanediamine ethylene diamine, alkyl polyglucoside, seconary alkane sulphonate sodium, iso-tridecanol or secondary alcohol polyoxyethylene ether, ordanic silicone defoamer and the balance purified water, and the sum of the components is 100%. Compared with the prior art, the natural nanometer material composition has the advantages that 1), adaptability to degumming and blenching of various hemp bast is high; 2), the stability of hydrogen peroxide under the condition of high-concentration caustic soda is ensured; and 3), production time is shortened, production efficiency is improved by 50% at least, whiteness is increased by 20% at least, and fiber strength is enhanced by 20% at least.
Description
Technical field
The present invention relates to crudefiber crop degumming and bleaching function additive field, relate in particular to a kind of for the same natural nano-material composition of bathing degumming and bleaching of flax fibre.
Background technology
At present for natural ramie bast fiber is processed into to the fiber product with higher spinnability, the crudefiber crop that pickling, soda boiling, chlorine float, hydrogen peroxide floats again generally adopted is come unstuck, bleaching production technique, owing in formula, existing sodium metasilicate to cause the oxidation of hydrogen peroxide unstable, therefore generally use hydrogen peroxide stabilizer in formula, but, under the production of high concentration caustic soda condition, still there is the unsettled problem of hydrogen peroxide effect.
The chlorine bleaching process that flax fibre generally adopts at present in addition can produce poisonous dioxin polluting human body and environment; And come unstuck and bleaching process in use sodium metasilicate, the silicon dirt that sodium metasilicate produces sticks on equipment and fiber, make that the flax fibre feel is stiff, spinnability is poor, and the hardness number of industrial water water quality is required high, the flax fibre whiteness after processing, brightness, intensity are all poor.
Summary of the invention
It is a kind of for the same natural nano-material composition of bathing degumming and bleaching of flax fibre that purpose of the present invention provides, overcome the deficiencies in the prior art, applicable lower serviceability temperature reaches under higher caustic soda and hydrogen peroxide condition to be used, hydrogen peroxide is had to higher stabilization, improve whiteness and the spinnability of flax fibre.
For solving the problems of the technologies described above, technical scheme of the present invention is:
For flax fibre, with the natural nano-material composition of bathing degumming and bleaching, it is mainly to be by the following raw materials according compositions in weight percentage:
Nanometer potter's clay particle diameter 20-100nm 10-40%,
One or both 0.5-5% in carboxyethyl thiosuccinic acid sodium and sodium ethylenediamine tetramethylenephosphonate,
One or both 1-5% in iminodisuccinic acid sodium and the large sodium acetate of ethylenediamine two salicyl,
Alkyl polysaccharide glycosides 1-10%,
Seconary Alkane Sulphonate Sodium 0.5-9%,
A kind of 0.5-5% in isomerous tridecanol and secondary alcohol polyoxyethylene ether,
Silicone defoaming agent 0.1-1%,
Remainder is pure water, and the said components summation is 100%.
The production process of described composition is: in stainless steel or enamel reactor, the pure water and the nanometer potter's clay that first add whole formula ratios, stir 3-12 hour with the stainless steel dasher under room temperature condition, stir 0.5-2 hour with the speed more than 2700 rev/mins again in the stainless steel high speed disperser, then under stirring condition, the order by formula adds remaining ingredient successively, adjacent component interval is more than 10 minutes, then the continuation stirring gets final product discharging in about 0.5-2 hour.
The using method of described composition is as follows: the flax fibre after removal of impurities, combing is placed in to normal pressure and boils and float in cylinder, add following auxiliary agent after washing: present composition 3-15g/L, NaOH (active ingredient 100%) 2-10g/L, H
2o
2(active ingredient 30%) 10-35g/L, speed with 0.3-2 ℃/min in 30-93 ℃ of temperature range heats up, respectively at 50-55 ℃, 70-75 ℃, 80-85 ℃ segmentation insulation 20-50min, finally at 93 ℃ of insulation 20-50min, directly discharge opeing washing after insulation finishes.
Above-mentioned auxiliary agent use amount is determined according to numb quality, produces the flax fibre of high grade yarn, and because raw material is better, auxiliary agent is used and measures smaller value, produces the flax fibre processing of coarse yarn, and auxiliary agent is used and measures higher value, strengthens the auxiliary agent use amount.
Compared with prior art, the invention has the beneficial effects as follows: 1) to the strong adaptability of various numb bast degumming and bleachings, flax fibre applicatory has flax, industrial hemp, jute, bluish dogbane, nettle, ramie, bluish dogbane, pineapple fibre etc., also is applicable to mulberry fibre, bamboo fiber.2) solved the stable problem of hydrogen peroxide under the caustic soda condition of high concentration, significantly avoided the decomposition of hydrogen peroxide, excellent decontamination, remove numb skin performance, the operations such as multistage washing, pickling, boiling-off, the chlorine that makes to process numb bast fiber floats, oxygen floats significantly shorten, significantly reduce industrial water, hardness number requirement to industrial water water quality is low, and reduces the pollutant of sewage; 3) shorten the production time, enhance productivity, improve more than 50% than the chlorine bleaching process efficiency that adopts the auxiliary agents such as sodium metasilicate, whiteness improves more than 20%, and fibre strength improves more than 20%.
The specific embodiment
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
The present invention is a kind of for the same natural nano-material composition of bathing degumming and bleaching of flax fibre, and it is mainly to be by the following raw materials according compositions in weight percentage:
Nanometer potter's clay particle diameter 20-100nm 40%,
Carboxyethyl thiosuccinic acid sodium 4%,
Iminodisuccinic acid sodium 1%,
Alkyl polysaccharide glycosides 5%,
Seconary Alkane Sulphonate Sodium 1%,
Isomerous tridecanol 0.5%,
Silicone defoaming agent 0.5%,
Pure water 48%.
Embodiment 2
The present invention is a kind of for the same natural nano-material composition of bathing degumming and bleaching of flax fibre, and it is mainly to be by the following raw materials according compositions in weight percentage:
Nanometer potter's clay particle diameter 20-100nm 30%,
Carboxyethyl thiosuccinic acid sodium 0.5%,
Sodium ethylenediamine tetramethylenephosphonate 0.5%,
The large sodium acetate 5% of ethylenediamine two salicyl,
Alkyl polysaccharide glycosides 1%,
Seconary Alkane Sulphonate Sodium 5%,
Secondary alcohol polyoxyethylene ether 3%,
Silicone defoaming agent 0.1%,
Pure water 54.9%.
Embodiment 3
The present invention is a kind of for the same natural nano-material composition of bathing degumming and bleaching of flax fibre, and it is mainly to be by the following raw materials according compositions in weight percentage:
Nanometer potter's clay particle diameter 20-100nm 10%,
Sodium ethylenediamine tetramethylenephosphonate 5%,
Iminodisuccinic acid sodium 3%,
The large sodium acetate 2% of ethylenediamine two salicyl,
Alkyl polysaccharide glycosides 10%,
Seconary Alkane Sulphonate Sodium 9%,
Isomerous tridecanol 5%,
Silicone defoaming agent 1%,
Pure water 55%.
In above-described embodiment, the production process of the present composition is: in stainless steel or enamel reactor, the pure water and the nanometer potter's clay that first add whole formula ratios, stir 3-12 hour with the stainless steel dasher under room temperature condition, stir 0.5-2 hour with the speed more than 2700 rev/mins again in the stainless steel high speed disperser, then under stirring condition, the order by formula adds remaining ingredient successively, and adjacent component interval is more than 10 minutes, then the continuation stirring gets final product discharging in about 0.5-2 hour.
The using method of above-mentioned composition is as follows: the flax fibre after removal of impurities, combing is placed in to normal pressure and boils and float in cylinder, add following auxiliary agent after washing: present composition 3-15g/L, NaOH (active ingredient 100%) 2-10g/L, H
2o
2(active ingredient 30%) 10-35g/L, speed with 0.3-2 ℃/min in 30-93 ℃ of temperature range heats up, respectively at 50-55 ℃, 70-75 ℃, 80-85 ℃ segmentation insulation 20-50min, finally at 93 ℃ of insulation 20-50min, directly discharge opeing washing after insulation finishes.
Above-mentioned auxiliary agent use amount is determined according to numb quality, produces the flax fibre of high grade yarn, and because raw material is better, auxiliary agent is used and measures smaller value, produces the flax fibre processing of coarse yarn, and auxiliary agent is used and measures higher value, strengthens the auxiliary agent use amount.
Claims (1)
1. the natural nano-material composition with the bath degumming and bleaching for flax fibre, is characterized in that, it is comprised of the following raw materials according component, is by weight percentage:
Nanometer potter's clay particle diameter 20-100nm 10-40%,
One or both 0.5-5% in carboxyethyl thiosuccinic acid sodium and sodium ethylenediamine tetramethylenephosphonate,
One or both 1-5% in iminodisuccinic acid sodium and the large sodium acetate of ethylenediamine two salicyl,
Alkyl polysaccharide glycosides 1-10%,
Seconary Alkane Sulphonate Sodium 0.5-9%,
A kind of 0.5-5% in isomerous tridecanol and secondary alcohol polyoxyethylene ether,
Silicone defoaming agent 0.1-1%,
Remainder is pure water, and the said components summation is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100960986A CN102634855B (en) | 2012-04-01 | 2012-04-01 | Natural nanometer material composition for one-bath degumming and bleaching of fibrilia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100960986A CN102634855B (en) | 2012-04-01 | 2012-04-01 | Natural nanometer material composition for one-bath degumming and bleaching of fibrilia |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102634855A CN102634855A (en) | 2012-08-15 |
| CN102634855B true CN102634855B (en) | 2013-12-11 |
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ID=46619427
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|---|---|---|---|
| CN2012100960986A Expired - Fee Related CN102634855B (en) | 2012-04-01 | 2012-04-01 | Natural nanometer material composition for one-bath degumming and bleaching of fibrilia |
Country Status (1)
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4199399A (en) * | 1976-04-19 | 1980-04-22 | Process Evaluation & Development Corp. | Method for preparing bagasse dissolving pulps and producing rayon having a degree of polymerization of at least 800 therefrom |
| JPH0319905A (en) * | 1989-06-13 | 1991-01-29 | Kosuke Sakai | Assistant for enzymatic degumming of raw silk |
| CN100430532C (en) * | 2005-11-25 | 2008-11-05 | 中国科学院化学研究所 | Stabilizer for use in hydrogen peroxide degumming and bleaching of flax and its preparation method and application |
| CN101545198B (en) * | 2009-04-30 | 2011-02-09 | 祝洪哲 | Nanometer material composition used for bleaching cellulose fiber fabric |
| CN102031568B (en) * | 2011-01-13 | 2012-04-18 | 祝洪哲 | Short-flow environmentally-friendly production method for jute fibers |
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Effective date of registration: 20210309 Address after: No.198, Qidi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU CAIRUN TECHNOLOGY Co.,Ltd. Address before: 114002 group 5, Shengli Bank Committee, Tiedong District, Anshan City, Liaoning Province Patentee before: Zhu Hongzhe |
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