CN115404705B - Method for improving dyeing fastness of natural dye - Google Patents
Method for improving dyeing fastness of natural dye Download PDFInfo
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- CN115404705B CN115404705B CN202211014668.2A CN202211014668A CN115404705B CN 115404705 B CN115404705 B CN 115404705B CN 202211014668 A CN202211014668 A CN 202211014668A CN 115404705 B CN115404705 B CN 115404705B
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- 229930182559 Natural dye Natural products 0.000 title claims abstract description 46
- 239000000978 natural dye Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004043 dyeing Methods 0.000 title claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 105
- 235000013824 polyphenols Nutrition 0.000 claims abstract description 47
- 150000008442 polyphenolic compounds Chemical class 0.000 claims abstract description 36
- 229920000768 polyamine Polymers 0.000 claims abstract description 28
- 238000012986 modification Methods 0.000 claims abstract description 14
- 230000004048 modification Effects 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000000975 dye Substances 0.000 claims description 24
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 18
- 239000001263 FEMA 3042 Substances 0.000 claims description 18
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- 229920002258 tannic acid Polymers 0.000 claims description 18
- 235000015523 tannic acid Nutrition 0.000 claims description 18
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 18
- 229940033123 tannic acid Drugs 0.000 claims description 18
- 229920002873 Polyethylenimine Polymers 0.000 claims description 16
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- 235000010837 Echinocereus enneacanthus subsp brevispinus Nutrition 0.000 description 4
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- 239000007853 buffer solution Substances 0.000 description 4
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical group OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 4
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- MDFFNEOEWAXZRQ-UHFFFAOYSA-N aminyl Chemical compound [NH2] MDFFNEOEWAXZRQ-UHFFFAOYSA-N 0.000 description 3
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- DHHFDKNIEVKVKS-FMOSSLLZSA-N Betanin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC(C(=C1)O)=CC(C[C@H]2C([O-])=O)=C1[N+]2=C\C=C\1C=C(C(O)=O)N[C@H](C(O)=O)C/1 DHHFDKNIEVKVKS-FMOSSLLZSA-N 0.000 description 2
- DHHFDKNIEVKVKS-MVUYWVKGSA-N Betanin Natural products O=C(O)[C@@H]1NC(C(=O)O)=C/C(=C\C=[N+]/2\[C@@H](C(=O)[O-])Cc3c\2cc(O)c(O[C@H]2[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O2)c3)/C1 DHHFDKNIEVKVKS-MVUYWVKGSA-N 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000007598 dipping method Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
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- 239000000126 substance Substances 0.000 description 2
- FTHCZYMFYCBWMW-UHFFFAOYSA-N Cl.CNCO.CNCO.CNCO Chemical compound Cl.CNCO.CNCO.CNCO FTHCZYMFYCBWMW-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- PFTAWBLQPZVEMU-UHFFFAOYSA-N catechin Chemical compound OC1CC2=C(O)C=C(O)C=C2OC1C1=CC=C(O)C(O)=C1 PFTAWBLQPZVEMU-UHFFFAOYSA-N 0.000 description 1
- ADRVNXBAWSRFAJ-UHFFFAOYSA-N catechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3ccc(O)c(O)c3 ADRVNXBAWSRFAJ-UHFFFAOYSA-N 0.000 description 1
- 235000005487 catechin Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
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- 239000011707 mineral Substances 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
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- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/34—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using natural dyestuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/238—Tannins, e.g. gallotannic acids
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/61—Polyamines polyimines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5278—Polyamides; Polyimides; Polylactames; Polyalkyleneimines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65118—Compounds containing hydroxyl groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65125—Compounds containing ester groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coloring (AREA)
Abstract
The invention discloses a method for improving the dyeing fastness of natural dyes, which belongs to the technical field of textile dyeing, and comprises the following steps: pretreating the fabric; then adding the modified natural polyphenol/polyamine into the modified natural polyphenol/polyamine liquid for modification; then adding the mixture into a natural dye liquor for dyeing. The method is environment-friendly and simple in process, and the prepared fabric has better washing resistance, dry and wet friction resistance and light fastness, and is a novel technology for improving the bonding fastness between the natural dye and the fabric.
Description
Technical Field
The invention relates to the technical field of textile dyeing, in particular to a method for improving the dyeing fastness of natural dyes.
Background
The natural dye is nontoxic and environment-friendly, has multifunctional properties of antibiosis, ultraviolet resistance, insect expelling and the like, and is widely applied to a plurality of fields of clothing dyeing, special food manufacturing, cosmetic development, antibiosis finishing, ultraviolet protection and the like. Especially, at present, along with the improvement of the influence of green and environment-friendly wave worldwide and the increase of the demands of people for natural regression and chong for nature, the life quality is continuously improved, and the natural dye enters the field of vision of people again and becomes a favored resource. However, natural dyes have limited application in the textile field due to their poor color fastness, especially light fastness, during dyeing.
In the application of natural dye dyeing, the dyeing rate of the natural dye on the fiber and various dyeing fastness can be improved through the use of mordant. The natural polyphenol is used as a common mordant, is suitable for various dyes and fibers, is an environment-friendly mordant, and is the key point of future research. The phenolic hydroxyl structure in the natural polyphenol enables the polyphenols, the fibers and the dye 3 to act through hydrogen bonds, which is beneficial to improving the bonding fastness between the dye and the fabric. In addition, the natural polyphenol can also be used as an antioxidant, so that the concentration of free radicals generated by light excitation is reduced, the speed of a chain reaction which leads to photooxidation is slowed down, and the decomposition of dyes or the change of structures is avoided, thereby improving the light fastness of natural dye-dyed fabrics. However, by the conventional impregnation and padding dyeing methods, stable valence bonds are not formed between the molecules of the polyphenol and the dye and the fibers, and the color of the fiber is reduced after washing or drying for many times.
Therefore, there is a need to provide a method for improving the color fastness of natural dyes.
Disclosure of Invention
The invention aims to provide a method for improving the dyeing fastness of natural dyes, which aims to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions:
a method for improving the color fastness of a natural dye, comprising the steps of:
(1) Adding the pretreated fabric into a modifying liquid to modify, taking out and drying (washing without water), wherein the modifying liquid comprises polyphenol and polyamine;
(2) And (3) adding the dried fabric into a dye liquor, performing a dyeing process, taking out, washing with water, and drying to obtain the dyed fabric.
Firstly, pretreating a fabric; then adding the modified natural polyphenol/branched polyamine into the modified natural polyphenol/branched polyamine liquid for modification; then adding the mixture into a natural dye liquor for dyeing. Under the weak alkaline condition, catechol structure in polyphenol oxidizes into quinone, and the catechol structure and amino radical in polyamine form network cross-linked polymer through covalent interaction, and the phenolic hydroxyl structure of the polymer has relatively strong adhesion performance, and can be deposited on the surface of fabric to form one adhesion layer, which can be used as a secondary functionalized platform, wherein the nitrogen-containing functional group ionizes under certain condition and is used as a cation dyeing seat to adsorb anionic dye. The phenolic amine is synergistically applied to the modification of the fabric, so that the combination fastness between the natural dye and the fabric can be better improved. The invention successfully improves the color fastness of the natural dye by using the phenol amine synergistic method. The method is environment-friendly and simple in process, and the prepared fabric has better washing resistance, dry and wet friction resistance and light fastness, and is a novel technology for improving the bonding fastness between the natural dye and the fabric.
Further, the preprocessing of step (1) includes: the fabric is added to a detergent (preferably a detergent JU, obtained by purchase) at room temperature, warmed to 85-95 ℃, stirred and rinsed for 15min, removed and rinsed with water, and dried.
Further, the temperature rising speed is 1-3 ℃/min.
Further, the concentration of the detergent in the step (1) is 5g/L, and the bath ratio is 1:30.
Further, the polyphenol in the modified liquid in the step (1) is 1-4g/L, the polyamine is 1-4g/L, the pH is 4.0-10.0, and the bath ratio is 1:30.
Further, the polyphenol is Tannic Acid (TA), the polyamine is a branched polyamine, and the branched polyamine is preferably Polyethyleneimine (PEI).
Further, the modification time in the step (1) is 3h.
Further, the dye liquor in the step (2) is natural dye 25-100% (percent, o.w.f (weight ratio of dye to fabric)), pH is 3.0-8.0, and bath ratio is 1:30-50.
Further, the natural dye is made of a pitaya pigment.
Further, the dyeing temperature in the step (2) is 30-90 ℃, and the finishing time is 10-60min.
Further, the drying temperature in step (2) is 50 to 70 ℃, preferably 60 ℃.
The natural polyphenol can be used as mordant and antioxidant to improve the color fastness of natural dye, branched polyethyleneimine is grafted firstly, then phenolic amine is synergistic on the fabric by adopting a simple impregnation adsorption modification mode, and the combination fastness of the dye and the fabric is improved. The adoption of the polyphenol polyamine modified fabric can provide more binding sites for the dye on the fabric, and meanwhile, the strong covalent interaction of the phenolic amine can firmly fix the polyphenol on the fabric so as to make up the defect that the antioxidant is lost due to water washing.
The invention discloses the following technical effects:
1. According to the invention, natural polyphenol and polyamine are selected as the dipping modification reagent, and the phenolic amine synergistically treats the fabric to provide more binding sites for the dye, so that the dye uptake and the binding fastness can be improved.
2. The invention avoids the defect of adding antioxidant by the traditional dipping and filling method, and the catechol structure in the polyphenol and the amino radical of polyamine are subjected to chemical reaction to form stable covalent bond, thereby improving the photostability of dyed fabrics.
3. The phenol amine synergistic method used in the invention has universality and is suitable for different fabrics and different natural dyes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The embodiment of the invention provides a method for improving the dyeing fastness of natural dyes, which comprises the following steps:
(1) Adding the pretreated fabric into a modifying liquid to modify, taking out and drying (washing without water), wherein the modifying liquid comprises polyphenol and polyamine;
(2) And (3) adding the dried fabric into a dye liquor, performing a dyeing process, taking out, washing with water, and drying to obtain the dyed fabric.
Firstly, pretreating a fabric; then adding the modified natural polyphenol/branched polyamine into the modified natural polyphenol/branched polyamine liquid for modification; then adding the mixture into a natural dye liquor for dyeing. Under alkaline condition, catechol structure in polyphenol oxidizes into quinone, and forms network cross-linked polymer through covalent interaction with amino radical in polyamine, and the phenolic hydroxyl structure of the polymer has relatively strong adhesion performance, and can be deposited on fabric surface to form one adhesion layer as secondary functional platform, wherein the nitrogen-containing functional group ionizes under certain condition to adsorb anionic dye as cationic dyeing seat. The phenolic amine is synergistically applied to the modification of the fabric, so that the combination fastness between the natural dye and the fabric can be better improved. The invention successfully improves the color fastness of the natural dye by using the phenol amine synergistic method. The method is environment-friendly and simple in process, and the prepared fabric has better washing resistance, dry and wet friction resistance and light fastness, and is a novel technology for improving the bonding fastness between the natural dye and the fabric.
In the embodiment of the invention, the pretreatment in the step (1) comprises the following steps: adding the fabric into a detergent (preferably a detergent JU, obtained by purchase) at room temperature, heating to 85-95deg.C at a heating rate of 1-3deg.C/min, stirring and cleaning for 15min, taking out the fabric, washing with water, and drying.
In the embodiment of the invention, the concentration of the detergent in the step (1) is 5g/L, and the bath ratio is 1:30.
In the embodiment of the invention, the polyphenol in the modified liquid in the step (1) is 1-4g/L, the polyamine is 1-4g/L, the pH is 4.0-10.0, and the bath ratio is 1:30.
The polyphenols in the embodiment of the invention are Tannic Acid (TA), catechin and gallic acid, the polyamine is branched polyamine, the branched polyamine is preferably Polyethyleneimine (PEI), and the structural formulas of the branched polyamine and the linear polyamine are as follows:
in the embodiment of the invention, the modification time of the step (1) is 3 hours.
In the embodiment of the invention, the dye liquor in the step (2) is natural dye 25-100% (percent, o.w.f), the pH is 3.0-8.0, and the bath ratio is 1:30-50.
The natural dye in the embodiment of the invention is prepared from dragon fruit pigment.
In the embodiment of the invention, the dyeing temperature in the step (2) is 30-90 ℃ and the finishing time is 10-60min.
In the embodiment of the invention, the drying temperature in the step (2) is 50-70 ℃, preferably 60 ℃.
The natural polyphenol can be used as mordant and antioxidant to improve the color fastness of natural dye, branched polyethyleneimine is grafted firstly, then phenolic amine is synergistic on the fabric by adopting a simple impregnation adsorption modification mode, and the combination fastness of the dye and the fabric is improved. The adoption of the polyphenol polyamine modified fabric can provide more binding sites for the dye on the fabric, and meanwhile, the strong covalent interaction of the phenolic amine can firmly fix the polyphenol on the fabric so as to make up the defect that the antioxidant is lost due to water washing.
The room temperature in the examples of the present invention means 25.+ -. 1 ℃.
The following examples take the pigment of dragon fruit as an example, and other natural dyes are also suitable.
Example 1
The fabric used in this example was a biobased PA56 fabric supplied by Jiangsu rainbow group limited, and its specification was 77.8Tex.
(1) The fabric is first pre-treated, as the condition of the raw fabric will have an effect on the subsequent treatment of the fabric. The concentration of the detergent JU in the pretreatment process is 5g/L, and the bath ratio is 1:30. the bio-based PA56 fabric was added to the detergent solution at room temperature and warmed to 95 ℃ at a warming rate of 3 ℃/min, stirred and rinsed for 15min, the fabric sample was removed and rinsed, and then placed in an oven to dry at 60 ℃.
(2) The natural polyphenol/branched polyamine is modified, and the specific formula of the modified liquid is as follows: preparing a buffer solution with the pH value of 7.0 by Tris (Tris (hydroxymethyl) aminomethane) -HCl and distilled water, adding 2g/L tannic acid and 2g/L polyethylenimine (PEI-1700) into the prepared buffer solution, and then adding the biological-based PA56 fabric treated in the step (1) into the modified solution at room temperature, wherein the bath ratio is 1:30, soaking for 3 hours at room temperature, taking out and directly drying in a 60 ℃ oven, wherein the Zeta potential of the cloth surface of the obtained modified fabric is greatly increased, the Zeta potential reaches 29.8mV (the Zeta potential of the original cloth is-17.1 mV), and the sites capable of being combined with the acid dye dragon fruit pigment are increased. The value of the Zeta potential is not only related to the amount of tannic acid and polyethyleneimine added, but also has a great relation with the pH value, and because the dyeing is carried out under the weak acid condition, the Zeta potential is positive, if the dyeing is under the neutral condition, the pure added TA is negative, and the addition of a small amount of PEI can lead the potential to be positive, so the effect is quite obvious.
(3) The specific formula of the dyeing liquid for dyeing the dragon fruit pigment is as follows: and (3) taking water as a solvent, regulating the pH value of the pitaya pigment dye solution to be 5.0 by using 1.0mol/L dilute hydrochloric acid and 1.0mol/L sodium hydroxide solution to 100% (o.w.f), and placing the solution in a constant-temperature oscillating table to be heated to 30 ℃ by a program of 1 ℃/min. 2.0g of modified biobased PA56 fabric cloth sample is taken and put into 100mL of dragon fruit pigment dye liquor, and the temperature is raised to 80 ℃ with a program of 1 ℃/min, and the temperature is kept for 40min. The cloth sample was taken out, washed with water, and put in an oven to be dried at 60 ℃.
(4) The rubbing color fastness of the fabric was assessed according to the relevant regulations of the national standard GB/T3920-2008 "rubbing color fastness for textile color fastness test". According to the national standard GB/T8427-2019 "fastness to artificial light for textile color fastness test": the xenon arc is related to the provision of assessing the light fastness of a fabric. The dry and wet resistant rubbing fastness of the obtained fabric can reach 4-5 levels, the staining fastness can reach 4-5 levels, the fading fastness can reach 3 levels, and the light-resistant color fastness can reach 3 levels; meanwhile, the ultraviolet resistance of the fabric is evaluated according to the related regulations of national standard GB/T18830-2009 evaluation of ultraviolet resistance of textiles. The ultraviolet resistance of the fabric reaches 35.77, and the fabric is improved to a certain extent compared with the original fabric (the original fabric is 6.46). The color fastness and the light fastness are improved by 1 grade compared with that of the dragon fruit pigment directly dyed with the bio-based PA56 fabric.
Example 2
The procedure of example 1 was repeated except that 2g/L of natural polyphenol tannic acid in the step (2) was changed to 2g/L of natural polyphenol gallic acid, and the remainder was the same as that of example 1, whereby a Zeta potential of a cloth cover was obtained as 23.7mV.
The color fastness testing standard is the same as that of the example 1, the dry and wet rubbing fastness of the obtained fabric can reach 4-5 levels, the staining fastness can reach 4-5 levels, the fading fastness can reach 3 levels, and the color fastness to light can reach 3-4 levels.
Example 3
The difference is that the fabric was changed as in example 1, and the fabric used in this example was a scouring and bleaching half product of pure cotton knitted fabric supplied by Jiangsu Daguang textile Co., ltd, the specification was 40 tex/2X 32tex/2, 128g/m 2, and the other was the same as in example 1.
The color fastness testing standard is the same as that of the example 1, the dry and wet rubbing fastness of the obtained fabric can reach 4 levels, the staining fastness can reach 4-5 levels, the fading fastness can reach 3 levels, and the color fastness to light can reach 3 levels.
Example 4
The fabric used in this example was a scouring and bleaching half product of pure cotton knitted fabric provided by Jiangsu Dasho textile Co Ltd, and the specification was 40 tex/2X 32tex/2, 128g/m 2.
The procedure of example 1 was repeated except that the natural dye was changed, and the pigment of the pitaya betanin was changed to the natural dye (the chemical component was polyphenol) extracted from the date pit, and the procedure of example 1 was repeated.
The color fastness test standard is the same as that of the example 1, the dry rubbing fastness of the obtained fabric is 5 grades (primary cloth grade 2-3), the wet rubbing fastness is 4 grades (primary cloth grade 2), the staining fastness can reach 5 grades (primary cloth grade 4-5), the fading fastness can reach 4-5 grades (primary cloth grade 3-4), and the light fastness can reach 4-5 grades (primary cloth grade 1-2).
Example 5
The difference was that the fabric was changed as in example 1, and the fabric used in this example was a pure wool fabric provided by Jiangsu sun groups, and had a specification of 80, and the rest was the same as in example 1.
The color fastness test standard is the same as that of the example 1, the dry rubbing fastness of the obtained fabric is 5 grades, the wet rubbing fastness is 4-5 grades, the staining fastness can reach 4-5 grades, the fading fastness can reach 3-4 grades, and the light fastness can reach 4 grades.
Comparative example 1
The fabric used in this example was a biobased PA56 fabric supplied by Jiangsu rainbow group limited, and its specification was 77.8Tex.
The difference is that only 2g/L of polyethylenimine (PEI-1700) was added to the buffer solution of step (2) and no tannic acid was added. The remainder was the same as in example 1. The Zeta potential of the obtained modified fabric is 31.2mV, which is higher than that of the cloth co-modified by phenol amine.
The color fastness test standard is the same as that of example 1, the dry and wet rubbing fastness of the obtained fabric is 4-5 grades, the staining fastness is 4-5 grades, the fading fastness is 3 grades, and the color fastness to light is 2 grades.
In the invention, tannic acid can be used as a natural mordant to enhance the binding force between the fabric and the dye, and can also be used as a natural antioxidant to improve the light fastness of the fabric. In this comparative example, no tannic acid was added, so that the various fastnesses should be reduced, but the reduction in fastnesses other than light fastness was not significant.
Comparative example 2
The fabric used in this example was a biobased PA56 fabric supplied by Jiangsu rainbow group limited, and its specification was 77.8Tex.
The difference is that only 2g/L tannic acid and no polyethyleneimine are added to the buffer solution of step (2) as in example 1. The remainder was the same as in example 1. The Zeta potential of the obtained modified fabric is 2.3mV which is lower than that of the cloth co-modified by phenol amine.
The color fastness test standard is the same as that of example 1, the dry and wet rubbing fastness of the obtained fabric is 3-4, the staining fastness is 3-4, the fading fastness is 2-3, and the color fastness to light is 2.
In the present invention, dyeing is performed under acidic conditions where the Zeta potential of the tannic acid, polyethylenimine, tannic acid and polyethylenimine modified fabric surfaces are positive, but the Zeta potential of the tannic acid alone modified fabric surfaces is the lowest. The percent dye uptake and color fastness of tannic acid modified fabrics are therefore lower than that of phenolic amine synergistic modification.
Comparative example 3
The fabric used in this example was a scouring and bleaching half product of pure cotton knitted fabric provided by Jiangsu Dasho textile Co Ltd, and the specification was 40 tex/2X 32tex/2, 128g/m 2.
The difference from example 1 is that: the dyeing process was carried out in the same manner as in example 1, except that the natural dye was changed, the natural dye (the chemical component was polyphenol) extracted from the date pit was changed from the pitaya betanin pigment, and the dyeing process was directly carried out in step (3) without performing the step (2) treatment on the fabric.
The color fastness test standard is the same as that of the example 1, the dry rubbing fastness of the obtained fabric is 2-3, the wet rubbing fastness is 2, the staining fastness can reach 4-5, the fading fastness can reach 3-4, and the light fastness can reach about 1-2.
In this comparative example, since the kind of natural dye was changed, the natural dye extracted from date palm was used, and the dyed sample had good wet fastness due to the mineral component of date palm and a large percentage of polyphenol derivative (tannic acid). However, the light fastness is particularly poor, since natural dyes are susceptible to oxidative decomposition by exposure to heat and light without any auxiliary.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. A method for improving the light fastness of a natural dye, comprising the steps of:
(1) Adding the pretreated fabric into a modifying solution for modification, taking out and drying, wherein the modifying solution is polyphenol and polyamine, and the pH value of the modifying solution is 7.0-10.0;
(2) Adding the dried fabric into a dye liquor, performing a dyeing process, taking out, washing with water, and drying to obtain a dyed fabric;
The pretreatment in the step (1) is as follows: adding the fabric into the detergent at room temperature, heating to 85-95 ℃, stirring and cleaning for 15min, taking out the fabric, washing with water, and drying;
the polyphenol is tannic acid, and the polyamine is polyethyleneimine;
the concentration of the detergent in the step (1) is 5g/L, and the bath ratio is 1:30;
The polyphenol in the modified liquid in the step (1) is 1-4g/L, the polyamine is 1-4g/L, and the bath ratio is 1:30.
2. The method for improving the light fastness of the natural dye according to claim 1, wherein the temperature rising speed is 1-3 ℃/min.
3. The method for improving the light fastness of natural dyes according to claim 1, wherein the dye liquor in the step (2) is natural dyes, the pH is 3.0-8.0, and the bath ratio is 1:30-50.
4. A method of improving the light fastness of a natural dye according to claim 3, wherein the natural dye is made of a dragon fruit pigment.
5. The method for improving the light fastness of natural dyes according to claim 1, wherein the dyeing temperature in the step (2) is 30-90 ℃ and the finishing time is 10-60min.
6. The method for improving the light fastness of natural dyes according to claim 1, wherein the drying temperature of the step (2) is 50-70 ℃.
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| CN110578259A (en) * | 2019-09-17 | 2019-12-17 | 常州大学 | method for improving dyeing depth of natural dye of silk fabric |
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| CN110578259A (en) * | 2019-09-17 | 2019-12-17 | 常州大学 | method for improving dyeing depth of natural dye of silk fabric |
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