29 results about "Indigo dye" patented technology

The invention relates to a flame-retardant indigo blue composite dye and a preparation method thereof, and belongs to the technical field of dyes. According to the indigo blue composite dye and the preparation method thereof, the synergist is prepared, the synergist and indigo blue are subjected to ball milling and blending to obtain the indigo blue composite dye, phosphite ester groups and benzotriazole in the synergist can synergistically form a firm heat-insulation flame-retardant barrier, the indigo blue dye is endowed with good flame retardance, and a dyed fabric better meets the fireproof safety requirement; the benzotriazole can also enhance the ultraviolet absorption performance of the dyed fabric, and the phosphite group can also have a triangular pyramid-shaped space structure, so that the synergist is integrally of a three-dimensional structure, pi-pi accumulation among indigo molecules is effectively prevented, and the indigo has good dispersion stability; quaternary ammonium salt cations in the synergist enable the dyed fabric to achieve the antistatic effect, and meanwhile, the quaternary ammonium salt cations and indigo blue in the dyeing process can be mutually attracted through electrostatic attraction, so that the color fixing effect is achieved.

The application discloses a method for improving the ozone fastness of indigo dyed jean fabric, and belongs to the field of textile printing and dyeing processing technology, and comprises the following steps: adding the indigo dyed jean fabric into a treatment bath containing reactive amino condensate and secondary amino organosilicon emulsion, controlling the bath ratio to be 1:30, heating to 60 DEG C for treatment for 45 min, taking out the fabric, dehydrating, and drying at 100 DEG C-120 DEG C. The prepared reactive amino condensate has the advantages of high amino content, strong reducing effect and strong ozone resistance; meanwhile, the reactive amino condensate has reactivity and can react with the fiber during fixation, and has durability; the treatment bath of the application is added with the secondary amino organosilicon emulsion, which can provide the softness of the fabric, and the secondary amino group in the molecule also has a reducing effect, so that the ozone color fastness can be improved.

The invention discloses a continuous efficient decolorizing and bleaching system and process for preparing recycled pulp from waste textiles, and belongs to the technical field of waste textile recycling. The decolorizing and bleaching machine with a sectional type screw rod structure, process unit integration and the like is adopted for carrying out pretreatment, decolorizing treatment, first cleaning treatment, bleaching treatment and second cleaning treatment, so that continuous and efficient decolorizing, bleaching and cleaning on the waste textiles (especially the waste textiles containing indigo dyes) under the condition of medium and high concentration (10-30%) are realized; consumption of chemical agents and water resources is reduced, the technological process is shortened, and the technological requirements are met.

The invention relates to the technical field of indigo dyes, in particular to a water-soluble indigo derivative. The dye prepared from the water-soluble indigo derivative can be directly dissolved in water, so that the traditional indigo dyeing process can be thoroughly changed, and the water-soluble indigo derivative has the advantages of environmental protection, low toxicity, convenience in operation and the like, and can replace the traditional indigo dye.

The invention discloses a multi-parameter control device and method for a reduction-state indigo dye liquor. The device comprises a dye liquor acquisition module, a control module and a control module, wherein the dye liquor acquisition module is used for acquiring a dye liquor sample of the reduction-state indigo dye liquor; the dilution oxidation module is used for converting the reduced indigo blue in the dye liquor sample into the oxidized indigo blue in the dye liquor sample; the titration analysis module is used for automatically judging a titration end point and calculating the concentration of sodium hydrosulfite; automatically judging a titration end point by combining a multi-wavelength spectrophotometry, and calculating the concentration of sodium hydroxide; the optical detection module is integrated with a fixed wavelength light source and an absorbance sensor and is used for detecting the absorbance of the oxidized dye liquor sample and calculating the concentration of indigo through a preset standard curve; the integrated probe module is used for synchronously detecting the pH value, the oxidation-reduction potential and the salt concentration of the dye liquor in real time; and the central control processing module is used for generating a control instruction and controlling the mother liquor added with the reduction-state indigo dye liquor, the sodium hydroxide solution and the sodium hydrosulfite. The method is used for improving the efficiency and the control precision of stability regulation and control of the reduction-state indigo dye liquor.

The invention discloses an electrochemical reduction preparation method of indigo dye liquor, which comprises the following steps: (1) pouring indigo powder needing to be electrolyzed into an indigo powder barrel, meanwhile, pouring alkali liquor needing to be mixed into a main tank body, and pouring alkali liquor for electrolysis into an alkali liquor cylinder; (2) the main tank body conveys the alkali liquor in the main tank body into a stirring tank, the stirring tank conveys the alkali liquor into a material melting cylinder, a load sensor arranged in the material melting cylinder senses the weight of the material melting cylinder, and when the weight of the material melting cylinder reaches a set value, conveying of the alkali liquor is stopped; (3) the indigo powder in the indigo powder barrel is conveyed into a chemical material cylinder through a lifting and conveying device; the indigo powder and alkali liquor can be fully mixed, continuous mixing can be achieved, the indigo white content in an indigo solution obtained after electrochemical reduction is uniform and meets the requirement, meanwhile, cleaning can be conducted after a batch of products are processed, and subsequent batch processing and using cannot be affected.

This invention discloses a simulated indigo carmine staining method based on a recurrent adversarial generative network, comprising the following steps: inputting an endoscopic image (white light image) into a trained simulated indigo carmine staining model to generate a simulated indigo carmine staining image; the simulated indigo carmine staining model is a TransUNet backbone network based on Transformer and CNN, wherein the CNN includes a generator G. A Generator G B and discriminator D x The training method for the simulated indigo carmine staining model includes: establishing a network training set; and then generating a simulated staining image P. 3 ; simulated staining image P 3 Input discriminator D x In the middle, by discriminator D x Determine the simulated staining image P 3 Is it an endoscopic image stained image P? 2 The corresponding total loss is obtained and input into the generator G. A and generator G B The present invention provides a simulated indigo carmine staining method based on a recurrent adversarial generative network, which can simulate indigo carmine staining on endoscopic images, reducing medical costs and avoiding multiple endoscopic examinations and drug use.

The invention provides an indigo dyeing assistant for denim fabric as well as a preparation method and application thereof, and belongs to the technical field of textile chemistry. The application method comprises the following steps: (1) immersing the cotton fabric in an indigo dyeing auxiliary solution for modification to obtain a modified cotton fabric; (2) dispersing 1-7% o.w.f of indigo dye in deionized water, adding sodium hydroxide, sodium hydrosulfite and thiourea dioxide, and reducing to obtain an indigo leuco body solution; (3) putting the modified cotton fabric into the indigo leuco body solution, uniformly stirring, padding and dyeing, taking out, ventilating and oxidizing, washing with water, soap boiling, washing with water, and drying to obtain the indigo jean fabric. The novel indigo dyeing auxiliary is adopted to modify the cotton fabric, so that the surface property of the cotton fabric is changed, the dye uptake and the leveling property of the dye are improved, and meanwhile, the salt-free indigo dyeing effect is also realized.

To provide an indigo dyeing method for partially dyeing a fabric using a dye solution. [Solution] An indigo dyeing method comprising the steps of preparing a dye solution containing color components including indigo and a binder resin, imprinting the dye solution onto a fabric to be dyed, fixing the color components of the dye solution imprinted onto the fabric to be dyed, reducing the color components of the dye solution fixed onto the fabric to be dyed, and oxidizing the reduced color components. The color components are preferably solid components extracted from indigo flowers that are produced during the indigo-building process of indigo dye solution derived from natural indigo.

A method of ring dyeing a yarn includes a series of steps including providing a yarn selected from a free end yarn and a ring spun yarn. The yarn is immersed in a caustic bath having a caustic concentration of 50 g / L to 175 g / L for 7 to 40 seconds. And taking out the yarns from the caustic alkali bath, and airing. And after airing, rinsing the yarns in water. The yarn is selected from one of a free end yarn and a ring spun yarn, and when the yarn is a free end yarn and a ring spun yarn, the yarn is dyed in only one sulfur dye box, or when the yarn is a free end yarn, the yarn is dyed in at least one indigo dye box. After the dyeing step, the yarn is washed in water, after which the dyed yarn is dried.

1. Name of the product in this design: Dress (Indigo Dyed Punk Style Silver-Stamped Swallowtail Long Dress). 2. Intended use of this design: for wearing. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. When using uncommon views, omit the top and bottom views. 6. The clothing model in the design drawing is a supporting element and does not fall under the scope of the design for which protection is sought.

The invention discloses online indigo dye concentration detection equipment based on spectral change, relates to the technical field of dye concentration detection, and solves the problems of lagging, large manual error, no closed-loop control and the like of the existing offline detection. The equipment comprises a box body, a sampling assembly, a filtering assembly, a spectrum detection assembly, a display control assembly, a cleaning mechanism and a dye flow adjusting assembly, the inside of the box body is divided into a detection area and a control area, the sampling mechanism collects dye liquor from a sizing and dyeing combination machine, the dye liquor enters the detection pool after secondary filtration, the spectrum detection mechanism combines multiple sensors to collect spectrum signals, the controller calculates the real-time concentration through an algorithm, the flow adjusting assembly can be linked to achieve automatic supply of dye, and the dye liquor can flow back and be reused after detection. The cleaning mechanism can automatically clean the detection pool. The equipment is high in detection precision and strong in interference resistance, realizes online continuous detection and closed-loop control of indigo dye concentration, is adaptive to continuous production of a sizing and dyeing combination machine, reduces labor cost and dye waste, and improves the quality of printed and dyed products.

The utility model discloses an indigo dyed cloth jig dyeing machine, and relates to the technical field of jig dyeing machines. The indigo dyed cloth jig dyeing machine comprises a dye vat body, a feeding seat, an upper cover, a pumping unit, a filtering seat, a sleeve seat and a locking unit, the dye vat body is arranged at a target position, a conveying wheel and a guide wheel which are used for conveying cloth are arranged on the dye vat body, and a driving unit used for driving the conveying wheel to rotate is arranged in the dye vat body. According to the jig dyeing machine for the indigo dyed cloth, through the design of the pumping unit, dye is accurately conveyed and added, sufficient supply of the dye in the dye vat is ensured, the problem that time and labor are wasted during adding by field personnel is solved, meanwhile, through the design of the feeding base, the upper cover, the filtering base, the sleeve base and the locking unit, the dye is filtered during adding, and the dye is fed into the dye vat. The subsequent filter seat and the filter screen are convenient to disassemble, clean and maintain, the dye quality is ensured, and the use requirements are met.

This invention provides an indigo dyeing method for partially dyeing fabric using a dye solution. [Solution] A method for dyeing with indigo, comprising the steps of: preparing a dye solution containing a pigment component including indigo and a binder resin; applying the dye solution to a fabric to be dyed; fixing the pigment component of the dye solution applied to the fabric to be dyed; reducing the pigment component of the dye solution fixed to the fabric to be dyed; and oxidizing the reduced pigment component. The pigment component is preferably a solid component extracted from indigo flowers produced during the indigo dyeing process of an indigo dye solution derived from natural indigo.

A biosynthetic method and composition for producing indigo dyes comprising indigotin and isatin. A tryptophanase (TRP) and a flavin monooxygenase (FMO) can be produced through a transgenic organism having carrier encoded tryptophanase and flavin monooxygenase. The produced tryptophanase and flavin monooxygenase convert L-tryptophan into indigo dyes in the presence of one or more bioactive additives selected from cysteine, 2-hydroxyindole, or 2-indoxyl, and the weight ratio of indigotin to isatin in the dyes is between 1:0.1 to 1:4. The dyes have a hue of X: 0.1920 to 0.2481, Y: 0.2537 to 0.2019, Z: 0.5543 to 0.5501 in the CIE XYZ color space definition. Selectable and repeatable dyeing hues are provided.

The invention discloses an anti-yellowing jean fabric and a manufacturing method thereof, and belongs to the field of textile, and the method comprises the following steps: soaking warp yarns with a pre-finishing liquid, drying, then carrying out sizing dyeing on the warp yarns, weaving weft yarns and the warp yarns subjected to sizing dyeing to obtain a cloth blank, desizing the cloth blank, and then coating with an after-finishing liquid to obtain the anti-yellowing jean fabric, rutile type nano titanium dioxide is dispersed in the pre-finishing liquid; the after-finishing liquid contains a seaweed extract, an olive leaf extract, a green tea leaf extract, a butterfly bean flower extract and nano cellulose. According to the invention, the warps are covered with rutile crystal form nano titanium dioxide before being dyed with indigo, ultraviolet rays are scattered by virtue of high refractive index, the oxidative degradation of indigo dye under illumination is reduced, and the fabric is coated with natural extracts with oxidation resistance, so that the fabric can tolerate natural oxidation; and the inner and outer defense lines can jointly inhibit yellowing of the jean fabric.

The invention discloses a dyeing process of tencel / flax blended yarn for light and thin denim fabric. The dyeing process comprises the steps of warp preparation and warp beam dyeing. Sequentially carrying out pre-wetting, multi-stage indigo dyeing, mild oxidation and alternate washing, post-treatment and drying; the warp beam dyeing is specifically as follows: warp yarns sequentially pass through a pre-wetting tank, at least four dyeing tanks, an oxidation zone, a rinsing tank and a post-treatment tank. By controlling the dyeing liquid to be alkalescent, low-temperature and low-tension technologies, chemical damage and physical stretching to tencel fibers are reduced, and fuzzing and broken ends are reduced. The pre-treated activated fiber and the gradient decreasing dye liquor concentration are matched with sufficient oxidation, the dye is promoted to diffuse into the fiber, the good dye penetration effect is achieved, the colored light is pure, and the color uniformity is guaranteed. And the weaving property of the yarn is improved through the post-treatment softening procedure. Due to hydrophilic softness and anti-wrinkle finishing, the yarn is soft and full in hand feeling and perfectly meets the comfort requirement of light and thin denim.

The invention discloses a preparation method of a low-temperature rapid-fermentation indigo dye liquor, which is characterized in that the winter fermentation period is shortened to 3-4 days by optimizing a carbon nitrogen ratio formula (5-1kg of indigo mud and 50kg of water), compounding a fermentation accelerant (50-degree rice wine and sweet wine) and a dynamic cylinder expanding system, and the efficiency is improved by 57% compared with that of the traditional process. A constant-temperature control and staged cylinder expansion strategy is adopted, stable dye liquor activity (pH is 6.8-7.2, and reducing sugar is greater than or equal to 8g / L) is realized, the technical problem of insufficient microbial activity in a low-temperature environment is solved, and the method is suitable for industrial continuous production.

The utility model relates to the technical field of indigo dye extraction, and specifically relates to an automatic feeding and quantifying device for indigo dye extraction, which comprises a support frame, a conveying frame is arranged on the support frame, a rotating shaft is arranged in the conveying frame, a driving source is arranged on the rotating shaft, a conveying belt is sleeved on the rotating shaft, the conveying belt is arranged in the conveying frame, one end of the conveying frame is arranged in an inclined manner, a storage cylinder is arranged on one side of the support frame, a discharge port is formed in one side of the storage cylinder, and the extract of indigo dye is placed in the storage cylinder; protective frames are arranged on the two sides of the conveying frame, and the protective frames are arranged in an inclined manner. Compared with the prior art, the safety and cleanliness of the conveying process are improved, the overall structure is simple, maintenance is facilitated, and the automatic improvement in the indigo dye extraction process is applicable.

Methods for obtaining indigo dyed yarns with controlled ring dyeing are provided. Systems and devices for yarn indigo dyeing resulting in dyed yarns with homogenous color intensity are also provided.

1. Name of the product in this design: Embroidered Bag (Indigo Dyed). 2. Purpose of this design: For storing items. 3. The key design elements of this product are the combination of shape, pattern, and color. 4. The image or photograph that best illustrates the design's key features: the front view. 5. The design for which protection is sought includes color.

A method for obtaining indigo-dyed yarn with controlled ring dyeing is provided. A system and apparatus for indigo dyeing yarn are also provided, which produce dyed yarn with uniform color intensity.

The application provides an electrochemical vat dyeing device and method. The electrochemical vat dyeing device is provided with a cathode chamber and an anode chamber, a cathode plate is arranged in the cathode chamber, and an anode plate is arranged in the anode chamber; a PES film coated with nano-particles is used as a diaphragm between the cathode chamber and the anode chamber; wherein the nano-particles include Ti4O7 nano-particles, CeO 2‑x at least one of ZrO2 nano-particles and CeO2 nano-particles, 2>x>0, and 2>y>0. 2‑y The electrochemical vat dyeing device provided by the application uses a PES film coated with ZrO2 nano-particles as a diaphragm, replaces a traditional Nafion film, and can be well applied to an electrochemical vat indigo process and is a good electrochemical vat indigo dyeing device. The electrochemical vat dyeing device provided by the application is used in an electrochemical vat indigo process, and realizes high current efficiency for electrochemical vat indigo under the premise of high-efficiency isolation of leucoindigo at low cost.

The invention relates to the field of fabric production processes, and discloses a production process method of a full-flax woven jean fabric, which comprises the following steps: selecting high-strength flax yarns and carrying out high-temperature steam damp-heat balance pretreatment; tension is controlled for low-speed warping; performing high-temperature boiling-off and low-concentration multi-pass indigo dyeing on the warp yarns; carrying out permeation sizing by adopting low-viscosity and low-concentration slurry containing modified starch, glycerol and a softening agent; rapier weaving is carried out in a closed high-humidity environment under the process conditions of a high back rest and an early opening; and finally, singeing, desizing and mechanically preshrinking the gray fabric, or adding a cold pad-batch process for the semi-bleached fabric. The residual stress of linen fibers is released through damp and hot pretreatment, the yarn toughness is improved through the moisture absorption and plasticization effects of glycerin, entangled hairiness is separated in combination with a high-humidity environment and a high back rest weaving process, the problems that the full-linen yarn is large in rigidity and prone to brittle fracture, and a cloth fell is not clear are effectively solved, and continuous production of the high-quality full-linen jean fabric is achieved.

The invention discloses an indigo microcapsule suspension pad dyeing-reduction dyeing technology, which belongs to the technical field of textile printing and dyeing, and comprises the following steps: (1) dispersing indigo-Arabic gum microcapsules in water to prepare indigo-Arabic gum microcapsule suspension dye liquor; and (2) preparing the fabric before dyeing, uniformly applying the indigo-Arabic gum microcapsule suspension dye liquor to the fabric by multiple padding, performing wet reduction and oxidation, and finally performing post-treatment to obtain the dyed fabric. The microcapsule chromosome system realizes slow release of the indigo dye, preparation (fiber pretreatment) before dyeing of the fabric provides a channel for efficient dyeing of the dye, meanwhile, the working procedures and the process provide a basis for realization of the two, and the technical effects of controllable reduction, uniform dyeing, mild oxidation and the like are jointly realized through the synergistic effect of the three. In addition, the dye uptake is high, dyeing is uniform, and industrial popularization and application are facilitated.

Methods for dyeing keratinous fibers, in particular human hair, using an indigo-producing plant powder and a post-treatment agent are described.

1. Name of the designed product: shoes (indigo dyed shoes). 2. Use of the designed product: for wearing. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: perspective view.

The invention relates to the technical field of wastewater treatment, and particularly discloses a bio-based nitrogen-doped carbon material, a preparation method thereof and application of the bio-based nitrogen-doped carbon material in treatment of printing and dyeing wastewater. The bio-based nitrogen-doped carbon material is prepared by mixing portulaca oleracea carbonized powder and carbon-nitrogen mixed powder prepared by co-carbonizing portulaca oleracea powder and silkworm chrysalis shell powder according to a specific proportion. The bio-based nitrogen-doped carbon material is used as a cathode material to be applied to treatment of indigo dyeing wastewater in an electric flocculation and electrochemical oxidation coupled system, carboxyl and hydroxyl rich in carbonized purslane can effectively neutralize the increased pH value in the electric flocculation process, continuous flocculation is guaranteed, proper conditions are provided for oxygen reduction reaction, and the method is suitable for industrial production. The hydrogen evolution reaction is reduced, the OH <-> generation amount is reduced, and the treatment efficiency and stability are synergistically improved. Meanwhile, the carbon-nitrogen mixed powder has a rich mesoporous structure, the structure can promote the double-electron oxygen reduction reaction of O2, and the electrooxidation catalytic efficiency in a wastewater treatment system is remarkably improved.