283 results about "Colour fastness" patented technology

The invention provides a multidirectional rubbing color fastness detection device, and relates to the technical field of color fastness detection.The multidirectional rubbing color fastness detection device comprises a detection assembly, the detection assembly is composed of a friction mechanism and a driving mechanism, and the reciprocating movement direction of the friction mechanism can be freely adjusted, controlled and guided according to actual requirements, so that the friction mechanism can be adjusted and guided freely on the premise that a to-be-detected sample is not disassembled and assembled again; the detection direction is reset and guided, the operation process is simplified, the detection efficiency is improved, and meanwhile, the driving mechanism has two detection types of reciprocating motion and autorotation, so that the detection requirements of different types (rotary friction and reciprocating friction) can be met, and the problems that the friction head of the rubbing color fastness detection device is fixed in moving direction, and the detection precision is low are solved. And when friction detection needs to be carried out on the surface of the sample in different directions, only the clamped sample needs to be disassembled firstly, the fixed angle of the sample is adjusted and then the sample is clamped again, so that the operation steps are tedious.

The invention discloses a preparation method of high-color-fastness woven body paper and the high-color-fastness woven body paper, and relates to the technical field of papermaking, and the preparation method of the high-color-fastness woven body paper comprises the steps of preparing a composite dyeing assistant and preparing the woven body paper. The preparation method comprises the following steps: stirring and mixing cationic microcrystalline cellulose, sodium carboxymethyl cellulose, triethanolamine myriceate, glucan hydroxypropyl trimethyl ammonium chloride, a water-based polycarbodiimide cross-linking agent and deionized water to obtain a composite dyeing assistant, then adding the composite dyeing assistant into slurry, adding a water-based dye, and carrying out a papermaking process to obtain the composite dyeing assistant. According to the method, the color fastness of the woven body paper can be improved. The sun-proof grade of the high-color-fastness woven body paper is greater than or equal to 4 grades.

The utility model relates to the field of mesh cloth provides a high colour fastness jacking mesh cloth, solves the defect that the colour fastness of jacking mesh cloth of prior art is not high, including mesh cloth body, the mesh cloth body is by surface layer, connecting layer and bottom layer constitutes, the surface layer has jacquard weave, the surface layer is woven by wear -resisting fibre yarn and chinlon fibre yarn according to 2: 1 3: 1's number of strands, the connecting layer is the elastic fibre yarn with support performance, one end of connecting layer is connected with surface layer, the other end is connected with bottom layer, the bottom layer is woven by antibacterial microcapsule fibre yarn and moisture -absorbing and sweat -releasing fibre yarn according to 1: 1 1: 2's number of strands.

The invention relates to the technical field of image processing, in particular to a textile fabric texture area color fastness detection method and device, and the method comprises the steps: collecting RGB images before and after a test during the color fastness detection of the same textile fabric; the two images are grayed and then overlapped parts of edge contours are closed to screen out texture areas of the RGB images; determining brightness features of target pixel points in the RGB image before and after the test, identifying random noise points and constructing range weights of the random noise points, and correcting the brightness features for feature weighting of Gaussian kernel standard deviation during calculation of filtering at the corresponding pixel points; calculating a color difference value of the two filtered RGB images before and after the test in a texture area in the CLELAB color space; and outputting the color fastness grade of the texture area according to the color difference value and the color fastness grading method table. The invention aims to improve the precision of subsequent color fastness detection of the texture area of the textile fabric.

The present application relates to a kind of acrylic fabric dyeing and finishing process, including low temperature adding disperse dye, and glacial acetic acid is used to dye fabric, when the dosage of disperse dye exceeds 2.0%, it needs to be reduced twice cleaning, when the dosage of dye is 0.5%~2.0%, it needs to be reduced once cleaning, remove surface attached disperse dye;When the dosage of dye is 0.5% or less, it does not need to be reduced cleaning, after completing reduction cleaning, adding organic acid to fabric for acid neutralization treatment, dehydration after tank, opening, setting.The present application can realize energy saving and time saving in dyeing process, improve the turnover rate of dyeing vat, can satisfy full color system dyeing, high dye uptake, bright color, high color fastness, good cloth surface quality.After dyeing, the hand feeling is softer than conventional polyester.

The invention relates to an activating and coloring method of a polypropylene non-woven fabric, and belongs to the technical field of fabric coloring. Polypropylene non-woven fabric is modified through polydopamine, then sodium borohydride is used for reduction decoloration, and finally a dye solution is used for coloring. After reduction and decolorization, a benzophenone quaternary ammonium salt compound can be further utilized for modification, so that the color fastness of dyeing is improved. By means of spontaneous polymerization of dopamine on the surface of the polypropylene non-woven fabric, the polypropylene non-woven fabric which is originally hydrophobic and inert is converted into a material with functional activity, the surface performance of the non-woven fabric is improved, the binding capacity of the non-woven fabric and dye is enhanced, and the dyeing uniformity is improved. Sodium borohydride is used for reducing and decolorizing the polydopamine modified polypropylene non-woven fabric, so that brown chromaticity can be effectively removed, follow-up dyeing interference is avoided, active functional groups on the surface of the non-woven fabric are reserved, and good surface performance and structure of the non-woven fabric are maintained.

The invention relates to the field of dye chemistry, and discloses an acid dye with high color fastness, a preparation method of the acid dye and application of the acid dye in textile dyeing. According to the dye molecule, a 4-sulfo benzene ring and a 2, 5-dichlorobenzene ring are connected through an azo bridge (-N = N-), and a polysulfonate substituent group (-SO3Na) is introduced to a molecular skeleton to form a symmetric azo conjugated structure. The preparation method comprises the steps of nitration, reduction, sulfonation, diazotization, coupling and the like, the process conditions are mild, and the yield is stable. The obtained dye has a strong absorption peak in the range of 540-560nm, and the molar absorption coefficient epsilon is greater than or equal to 1.0 * 10 < 5 > L.mol <-1 >. Cm <-1 >. Compared with the conventional acid red dye, the dye has the advantages that the light fastness can reach grade 8, the fastness to washing is grade 7 or above, the color is bright, the color layer is uniform, the high dye-uptake can be realized under the low-salt condition, the conductivity of waste liquid is remarkably reduced, and the dye is suitable for dyeing protein fibers such as wool, nylon and silk.

This invention relates to the field of textile printing and dyeing, and discloses a high-colorfastness polyamide 56 fabric and its preparation method. The polyamide 56 fabric contains 70-100% polyamide 56 fiber and 0-30% spandex. The fabric has been dyed at least once, and the dye used for dyeing is a reactive dye. The polyamide 56 fabric dyed with reactive dyes of this invention has the advantages of higher dye uptake, wider pH adaptability, no need for large amounts of calcium salts for dyeing, and minimal or no use of color-fixing crosslinking agents.

The invention discloses a dyeing-free black soft polyester fiber and a preparation method thereof, and belongs to the technical field of waste polyester recycling. The preparation method comprises the following steps: melting and extruding waste PET (Polyethylene Terephthalate) with the intrinsic viscosity of 0.50-0.80 dL / g through a twin-screw extruder, and depolymerizing in an EG / BHET homogeneous system to obtain an oligomer with the polymerization degree of 5-7; mixing with carbon black slurry and a polycondensation catalyst, and carrying out pre-polycondensation and final polycondensation to obtain regenerated functional polyester; and finally, carrying out melt spinning under the conditions that the temperature is 275-285 DEG C and the speed is 2500-3500 m / min, so as to obtain the fiber with the monofilament of 0.5-2.0 dtex, the tensile modulus of 30-60 cN / dtex and the color fastness of more than or equal to grade 4. By accurately controlling the depolymerization degree and the dispersion system, the problems of pigment agglomeration, complex process and high fiber modulus in the prior art are solved, high-added-value recycling of the waste PET is realized, and the product can be used for close-fitting textiles.

This invention provides an antistatic dyeable spandex fiber and its preparation method. During spandex production, N-(2-hydroxyethyl)ethylenediamine is used as a terminating agent for chain extension, combined with the use of the stabilizer TAD, to prepare antistatic dyeable spandex fiber. This improves the dyeing rate and color fastness of spandex fiber to acid dyes and reactive dyes. Furthermore, the heat-resistant dyeable spandex can meet the high-temperature dyeing requirements in the polyester / spandex field. Simultaneously, the improved antistatic properties of the spandex fiber reduce the amount of oiling agents used by spandex manufacturers, thereby lowering production costs. For subsequent processes, it reduces the defect rate in dyeing, finishing, and weaving, saving costs.

This invention discloses a method for producing a high-elasticity fabric interwoven with diacetate and regenerated cellulose fibers, relating to the field of apparel fabric technology. The technical solution includes: fabric weaving, singeing, desizing, pre-setting, setting, dyeing, opening, drying, post-setting, padding, and pre-shrinking; wherein, dyeing includes dyeing of diacetate fibers, post-dyeing treatment, and dyeing of regenerated cellulose fibers. The high-elasticity fabric interwoven with diacetate and regenerated cellulose fibers produced by this invention has high elasticity, overcomes the defects of existing technologies, ensures the strength of diacetate fibers, improves the fabric's color fastness and elasticity, and significantly reduces fingerprints, color creases, and aurora prints.

This invention discloses a 1,6-diamino-dibenzo[a,o]perylene-7,16-dione-2,5-disulfonic acid derivative, its preparation method, and its application. Using a vat dye derivative PR177 as the parent material, a 4,4'-diamino-1,1'-dianthraquinone-3,3'-disulfonic acid derivative is formed by the Ullmann condensation of a 1-amino-4-bromoanthraquinone-2-sulfonic acid derivative. This derivative is then cyclically closed via the McMurray reaction to form the 1,6-diamino-dibenzo[a,o]perylene-7,16-dione-2,5-disulfonic acid derivative. This allows for direct dyeing without the use of sodium hydrosulfite. Compared to soluble vat dyes, it is stable when exposed to air. Furthermore, due to its good planarity, it exhibits excellent dyeing performance as an acid dye. It combines the advantages of good directness of vat dyes and good water solubility of acid dyes, especially showing excellent color fastness and exhaustion rate in wool dyeing.

The invention relates to the technical field of auxiliary detection of color fastness of textiles, in particular to a color fastness detection device for textiles. The color fastness detection device for the textiles comprises a bottom plate, a working table and connecting blocks, the working table is connected to the left side of the top of the bottom plate, the connecting blocks are symmetrically connected to the top of the working table, and the detection device further comprises an adjusting block, an elastic supporting table, a fixing assembly, an adjusting assembly and a detection assembly. Adjusting blocks are slidably connected to the inner sides of the connecting blocks, an elastic supporting table is connected between the adjusting blocks, an adjusting assembly is arranged on the workbench, and a detection assembly is arranged on the bottom plate. The driving motor serves as a power source to drive the semicircular disc to rotate, the elastic supporting table is converted from a plane state to a cambered surface state, one end of a sample can be correspondingly pushed and pulled through the conversion, the sample is made to adapt to the change of the shape of the elastic supporting table, therefore, different actual use conditions are simulated, and the flexibility and adaptability of equipment are improved.

The present application relates to a kind of blended fabric segmented steaming fixation method, comprising the following steps: blended fabric is sequentially carried out desizing, kiering, bleaching and mercerizing treatment, and pretreatment blended fabric is obtained after drying;Using composite reagent on pretreatment blended fabric is carried out padding treatment or vacuum-assisted foam impregnation treatment, and pre-treatment blended fabric is obtained after hot air drying;Prepare dye liquor, and after using dye liquor on pre-treatment blended fabric is carried out dye liquor padding treatment, then carry out segmented steaming fixation treatment, and after sequentially washing, drying, setting, obtain dyed blended fabric.The present application uses the composite reagent containing Ageratina pichurini ethanol extract and simmondsia chinensis seed oil to carry out padding treatment or vacuum-assisted foam impregnation treatment on blended fabric before dyeing, then carries out segmented steaming fixation treatment, can significantly improve the tensile strength and wash fastness of blended fabric, while giving blended fabric good gloss, and can make blended fabric keep better perspiration fastness.

The use of non-aqueous digital UV / LED inks for printing a flexible material is disclosed, especially for printing fabrics and hides. Moreover, an improved process is disclosed for digitally printing on flexible materials, by using said non-aqueous digital UV and / or LED inks. The resulting printed flexible materials are soft and matt, with an excellent colour fastness to rubbing, while still conveniently maintaining the initial flexibility. Moreover, it should be appreciated that resulting printed flexible materials are also completely odourless, differently from the materials printed according to the prior art.

The application discloses a dyeing boosting agent and a low-temperature salt-free dyeing method for bio-based PLA / regenerated cellulose fiber blended fabric, and relates to the technical field of textile dyeing. A synergistic cross-linking modification system is constructed by using a bio-based small-molecule phenol with double functional groups and a high-density amino polymer. The fabric is pretreated and immersed for modification, a stable ion cross-linking adhesion layer is formed on the surface of the fiber, and then low-temperature dyeing of the electrolyte-free reactive dye is carried out. The process adopts a one-bath one-step method, does not need high temperature, high salt and reduction cleaning procedures, is simple in process, low in carbon and environmentally friendly, can realize synchronous dyeing and uniform color of PLA and regenerated cellulose fiber, effectively improves the fabric dyeing rate and color fastness, and significantly improves the ultraviolet resistance of the product. The application solves the problems of poor uniformity, low color fastness and large pollution existing in the traditional dyeing process, and is suitable for green and efficient production of bio-based blended fabric.

The invention provides a half-wool fabric clean color fastness soaking device, and relates to the field of half-wool fabric soaking. A first adjusting assembly is fixedly arranged at the top of the soaking box; a second adjusting assembly is arranged in the sliding frame, and a driving structure is further arranged in the sliding frame. A clamping structure is fixedly arranged on the outer side of the bottom of the second adjusting assembly, and the second adjusting assembly, the driving structure and the clamping structure are symmetrically arranged at two positions. A driving structure and a second adjusting assembly are arranged; the two sets of clamping structures can drive the two sides of the to-be-tested fabric to rotate reversely or rotate in the same direction, so that the fabric can bear torsional force in a solution, the washing environment in actual use can be simulated, and the problems that the washing environment in actual use is inconvenient to simulate, and the working efficiency is low are solved. The capability of simulating the twisting force bearing of the fabric in the liquid medium is lacked.

The application discloses a short-process printing process of polyester-cotton blended fabric, which comprises screen printing by using active disperse dyes containing double active groups and steaming by using alcohol vapor; the double active groups include hydroxyethyl sulfone sulfate group and CH2CH(OH)CH2X (X is Br or Cl); the CH2CH(OH)CH2X can be converted into an epoxy group under alkaline conditions and can react with the alcohol vapor during the steaming process to realize the cross-linking between dye molecules, so that the effects of improving the fixation efficiency and shortening the process flow are achieved, and then the printed fabric with high color depth and high color fastness is obtained.

The utility model discloses a silk fabric perspiration-resistant color fastness fixation device, relates to the silk fabric technical field, and comprises a support frame, the top end of the inner wall of the support frame is rotatablely provided with a spacing adjusting mechanism, the spacing adjusting mechanism comprises a screw rod rotatablely arranged on the top end of the inner wall of the support frame, the bottom of the screw rod is fixedly provided with a motor 1, and the motor 1 is fixedly provided with a motor 2. A connecting column is connected to the top end of the outer wall of the screw in a meshed mode, a rotating disc is fixedly installed on the side wall of the connecting column, a sliding block is rotatably installed on the side wall of the rotating disc, and an upper brushing roller shaft is rotatably installed on the side wall of the sliding block; according to the silk fabric color fixing agent coating device, the first motor drives the screw rod to rotate, the upper coating roller shaft and the lower coating roller shaft are driven to rotate at the same time, the color fixing agent is evenly coated on the two faces of a silk fabric, the second motor and the screw rod are used for adjusting the distance between the upper coating roller shaft and the lower coating roller shaft, and therefore the upper coating roller shaft and the fabric keep proper contact pressure all the time; and uneven brushing and damage to the fabric caused by uneven thickness of the fabric are avoided.

The invention discloses a preparation method of a low-pore-number composite lining, and belongs to the technical field of textiles. The preparation method of the low-hole-number composite lining comprises the following steps: (1) weaving polyester yarns into gray fabric; (2) shaping and preshrinking the gray fabric; (3) dyeing the set and pre-shrunk gray fabric; (4) shaping and finishing the dyed gray fabric to obtain a composite lining; wherein the dye for dyeing is obtained by reacting N-amino-4-N, N-dimethyl-1, 8-naphthalimide with ferrocene dicarboxaldehyde, and the dye for dyeing is obtained by reacting N-amino-4-N, N-dimethyl-1, 8-naphthalimide with ferrocene The setting agent for setting and finishing contains a hydrophilic softening agent, the hydrophilic softening agent is obtained by mixing polyether phenyl silicone oil with a compound emulsifier and deionized water, and the polyether phenyl silicone oil is obtained by reacting side chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane and 1-(4-vinyl-phenyl)-ethanone; the prepared low-hole-number composite lining is good in hydrophilicity, color fastness and softness.

The application discloses a kind of fabric multifunctional detection device, it is related to fabric multifunctional detection technical field, including detection table, feed zone and discharge zone are provided with continuous detection mechanism, detection zone is provided with fabric clamping mechanism, and detection table is provided with feeding mechanism, and support frame is provided with the multi-station detection mechanism for the synchronous detection of multiple to-be-detected roll fabric.The advantages are that: by winding roll, the detection area of to-be-detected roll fabric is continuously changed in the winding mode, so that automatic replacement can be realized without long downtime, which facilitates continuous detection in terms of rapid replacement of to-be-detected fabric; by setting two feeding mechanisms to move alternately to the detection zone for feeding, the preparation time required between different performance detections is reduced, which improves the continuity between different performance detections in terms of rapid replacement of abrasive and weight; different abrasives and weights are replaced in batches, and integrated continuous detection operation of wear resistance, pilling resistance and color fastness is carried out.

The invention relates to the technical field of cloth processing, and particularly discloses an environment-friendly high-color-fastness dyeing and finishing method for a spandex-containing elastic fabric, which comprises the following steps: (1) after unwinding the spandex-containing elastic fabric, standing for relaxation to obtain a relaxed fabric; (2) performing environment-friendly pretreatment on the relaxed fabric to obtain an environment-friendly pretreated fabric; (3) shaping the environment-friendly pre-treated fabric to obtain an anti-yellowing shaped fabric; (4) carrying out constant-temperature dyeing on the anti-yellowing shaped fabric to obtain a dyed fabric; and (5) shaping the dyed fabric, and cooling to obtain the environment-friendly high-color-fastness spandex-containing elastic fabric. According to the environment-friendly high-color-fastness dyeing and finishing method for the spandex-containing elastic fabric, the comprehensive performance is excellent, by compounding the environment-friendly anti-yellowing agent and the retarding type leveling agent and adopting the processes such as step-by-step washing, the product is high in washing resistance, rubbing fastness and hand feeling rating, good in dyeing uniformity and small in size change rate, and the method is suitable for production of high-grade elastic fabric.

The present application belongs to the field of fine chemical industry and textile printing and dyeing, and relates to a reactive dye which can be used for fixing color of dyed polyester fabric by dry heat setting process, a preparation method and dyeing application thereof. The reactive dye provided by the present application has a general structure, and the present application also simultaneously provides the use of the reactive dye, i.e. fixing color of dyed polyester fabric by dry heat setting process. Through ingenious design and application of the carbene type dye, the present application realizes high color fastness effect of dyed polyester fabric, eliminates the adverse factors of high temperature heat setting, and expands the optional range of setting heat setting process (temperature, time).

The invention discloses a synthetic method of a water-based polyurethane color fixing agent for nylon dyed by an acid dye, aiming at the property of nylon dyed by the acid dye, poly (butylene adipate-1000) and polyethylene glycol-1000 are mixed to prepare cationic water-based polyurethane, so that the dyeing percentage is increased, and the treated nylon has higher K / S value and color fastness; meanwhile, N, N-dimethyl-N, N-bis (2-ethoxyl) ammonium chloride is selected as a cationic chain extender of the waterborne polyurethane, compared with a traditional cationic chain extender, a neutralization procedure necessary for a traditional route is omitted, the risks of neutralization amount deviation, local acid excess and the like are avoided, and the production process is simplified.

The invention relates to the technical field of polymer dye synthesis, and discloses a monomer for a red polyester fiber and a preparation method thereof.The monomer for the red polyester fiber takes perylene diimide as a core chromogenic mother nucleus, a substituted phenol group is connected to aryl of the perylene diimide mother nucleus, and alkyl carboxylic acid is connected through the aryl of the perylene diimide mother nucleus; the molecular tail end of the monomer for the red polyester fiber is connected with alkyl carboxylic acid through aryl and is subjected to efficient ester exchange reaction with dihydric alcohol, and perylene diimide chromophores are directly embedded into a polyester molecular main chain in a covalent bond form. The monomer for the red polyester fiber, provided by the invention, has excellent color development performance and thermal stability. The red monomer can be directly used for in-situ synthesis of red polyester and can be directly used for melt spinning to improve the color fastness and coloring uniformity of a product, and the preparation method is simple, low in cost and easy for large-scale production.

The invention belongs to the technical field of textile dyeing and finishing assistants, and discloses a high-efficiency level dyeing assistant for dyeing and finishing and a preparation method thereof, the assistant is formed by assembling an amphiphilic block copolymer and a dynamic reversible covalent bond polymer, the block copolymer has hydrophilic and oleophylic sections, nano-scale micelles are formed through self-assembly, and the nano-scale micelles are uniformly dispersed in the dynamic reversible covalent bond polymer. Dye molecules can be efficiently captured, slowly released and stably dispersed; a reversible ketoxime bond is introduced into a main chain of the dynamic polymer to form a cross-linked network with micelles, so that the assistant keeps a stable structure under a dyeing condition; after dyeing and finishing are finished, reversible bond breakage is triggered through acid-base adjustment or reducing agent treatment, micelles are rapidly depolymerized, and the auxiliaries are recycled and can be repeatedly used; the auxiliary agent can significantly improve the uniform dispersion of dye in dye liquor and the color consistency of fabric, enhance the color fastness, reduce the dosage of the auxiliary agent and reduce the wastewater treatment load, and has good environmental protection and cyclic utilization performance.

The invention relates to high-color-fastness emerald blue ink and a preparation method thereof. The emerald blue ink is prepared from the following raw materials in percentage by mass: 20 to 30 percent of color paste, 20 to 30 percent of glycerol, 5 to 10 percent of waterborne polyurethane, 3 to 6 percent of closed curing agent, 1.5 to 2.5 percent of surfactant, 0.1 to 0.3 percent of bactericide and the balance of deionized water, wherein the color paste is prepared from the following raw materials in percentage by mass: 20 to 25 percent of disperse blue 60, 10 to 15 percent of glycerol, 5 to 10 percent of sodium lignin sulfonate, 4 to 8 percent of styrene-maleic acid copolymer, 4 to 8 percent of acrylic resin, 5 to 10 percent of C12-14 secondary alcohol polyoxyethylene ether, 0.1 to 0.3 percent of bactericide and the balance of deionized water. The color of the ink is fresh and beautiful turquoise blue, the color fastness of the ink is high, and the ink has good market application prospects.

The present invention discloses a textile fabric color fastness dynamic evaluation system, and relates to the field of optical detection, and the textile fabric color fastness dynamic evaluation system comprises: a normalizing module used for grabbing a to-be-evaluated textile fabric and tightening the to-be-evaluated textile fabric; the excitation module is used for dynamically outputting optical signals with different wavelengths, intensities and irradiation angles to the fabric in the tight state; according to the method, optical related parameters are adjusted by adapting to the initial characteristics of the fabric, the integrity and the signal-to-noise ratio of signal acquisition are improved, the feature extraction accuracy is guaranteed, the fabric tightening state is scientifically controlled, damage is avoided, meanwhile, the consistency of test conditions is guaranteed, ambient light interference is effectively shielded, signal errors are reduced in combination with dynamic noise reduction and baseline correction, and the detection accuracy is improved. And the color fastness correlation signal is enhanced through feature fusion and normalization processing, so that the quantitative evaluation accuracy is improved.

The invention discloses a batik pigment based on natural plants. The batik pigment comprises the following raw materials: a basic auxiliary agent and at least one color development plant, the basic auxiliary agent is prepared from the following components in parts by weight: 3 to 8 parts of gallnut and 2 to 6 parts of rhizoma curcumae longae; the color development plants comprise the following components in parts by weight: 10 to 20 parts of radix rubiae, 5 to 15 parts of radix scutellariae and 5 to 12 parts of indigo grass. The invention further discloses a batik process adopting the batik pigment. According to the batik pigment based on the natural plants, the problems that a traditional plant dye is single in chromatography and unstable in color matching are solved, the chromatography of the batik pigment is rich and controllable, and the requirement of the batik technology for rich colors is met; the dye is excellent in stability and long in storage life; a wax printing process is adapted, the dyeing effect is stable, and the color fastness is high.

The invention discloses a dyeing and protecting integrated hair dye and a preparation method thereof.The hair dye comprises an agent A, an agent B, an agent C and an agent D. The agent A comprises a reducing agent; the agent B comprises sulfydryl modified hyaluronic acid; the agent C comprises a melanin precursor; the agent D comprises an oxidizing agent; the sulfydryl modified hyaluronic acid is obtained by introducing a sulfydryl functional group on a hyaluronic acid molecular chain. The hair dye provided by the invention has good coloring efficiency and color fastness, the strength of dyed hair is remarkably improved, and the technical effect of synchronously performing hair dyeing and hair care is achieved.