34 results about "Disperse dye" patented technology

The application discloses a preparation method of a fabric with light-absorbing, heat-generating and antistatic composite functions. CuS nanoparticles are dispersed in a dispersion liquid, and tetraethyl orthosilicate is slowly added dropwise. After continuous stirring reaction, the reaction precipitate is dried to obtain silica-coated copper sulfide nanoparticles. The dispersion liquid is a mixed solution of ethanol, water and ammonia water. The silica-coated copper sulfide nanoparticles, disperse dye, crosslinking agent, surfactant, dispersant and deionized water are stirred and mixed, and ultrasonic dispersion is carried out. Then, the adhesive is added and stirred uniformly. Grinding particles are added to the mixed solution for grinding, and the grinding particles are removed through sieving to obtain a finishing liquid. The pretreated polyester fabric is pad-dyed in the finishing liquid, and is dried and solidified. Finally, the fabric product is obtained through washing and drying. The silica-coated copper sulfide nanoparticles realize the combination of light-absorbing, heat-generating, warm-keeping and static elimination functions, and the production cost is low, and the process is simple.

This invention discloses a class of quinalidine disperse yellow dyes with high sublimation fastness and their synthesis method, belonging to the field of disperse dye technology. This invention uses Disperse Yellow 54 as the parent core and introduces one of the following substituents at the 6-position of the quinalidine ring: ethyl, n-propyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, cyclopropoxy, cyclobutoxy, cyclopropylmethoxy, 2-methoxyethoxy, fluorine, chlorine, bromine, cyano, or nitro. This invention uses 6-substituted-2-methyl-3-hydroxyquinoline-4-carboxylic acid and phthalic anhydride as raw materials, and synthesizes the target dye in one step via a high-temperature condensation reaction. Experimental results show that the sublimation fastness of the dye of this invention reaches grade 4-5 or 5, significantly improved compared to Disperse Yellow 54 (grade 2-3), while maintaining excellent resistance to rubbing, perspiration, and sunlight. This invention has a simple synthesis process, high yield, and high purity, possessing extremely high industrial production value and market application prospects.

The present invention appropriately decolorizes a fiber medium that has been colored with a dye.　This decolorizing composition is used to decolorize a fiber medium that has been dyed using a dyeing material containing a dye having sublimation properties such as a sublimable dye or a disperse dye which has sublimation properties. The decolorizing composition contains, as an active ingredient, a chain compound containing one hydroxy group and a plurality of alkoxy groups or ether groups.

This invention relates to a dark-colored disperse dye composition, its preparation method, and its application, belonging to the field of textile dyeing technology. Based on the total weight of the dye composition, it comprises: 70-95 wt% dark-colored disperse dye, 0.1-0.9 wt% polyurethane, 3-15 wt% dispersant, and 0.1-2 wt% anti-dust oil; the polyurethane is a nonionic waterborne polyurethane and / or a blocked isocyanate waterborne polyurethane. This composition can be directly used for dyeing polyester / spandex, achieving wet rubbing fastness of 4-5 and dry rubbing fastness of 4-5 without post-treatment, with minimal color difference under different light sources (ΔE<0.3) and no light skipping. Compared with sulfonic acid polyurethane, the polyurethane of this invention has a superior fastness improvement effect. By adding deepening agents and antibacterial agents, a deeper appearance and antibacterial function can be imparted to the fabric. The preparation process of this invention is simple, employing a one-step dyeing method, simplifying the process flow. This invention combines the advantages of high wet rubbing fastness, simple process, no light skipping, and the ability to add additional functions, making it widely applicable.

The utility model discloses a kind of dispersed dye dispersion liquid preparation devices, including preparation bearing tank, the middle part of preparation bearing tank is equipped with isolated material distribution plate, the preparation bearing tank is divided into mixed dispersion cavity and nanometer dispersion cavity by isolated material distribution plate.The utility model, two drive motor groups are driven dispersion stirring part and rotor shear frame, dispersed dye is mixed preparation by mixed dispersion cavity in dispersion stirring part, then by pressurized flow guide component pressurized flow extraction to nanometer dispersion cavity, by nanometer cutting assembly and rotor shear frame, nanometer extrusion shear is carried out, the particle of dispersion liquid can be sheared into nanometer grade particle, preparation quality is excellent, complete dispersion and refinement operation can be carried out in single equipment single process operation, production efficiency is high, so that device can integrally complete dispersion and refinement of dispersion liquid, improve the efficiency of dispersion liquid preparation production, dispersion shear effect is good, and dye processing quality is high.

The present invention provides a fiber containing syndiotactic polystyrene that exhibits dyeability with disperse dyes and shrinkage at high temperatures equivalent to those of polyester fibers. [Solution] The fiber is characterized by containing a mixture of syndiotactic polystyrene A and atactic polystyrene B, wherein the amount of atactic polystyrene B is 15 to 50 parts by mass per 100 parts by mass of the total of syndiotactic polystyrene A and atactic polystyrene B, wherein the crystallite size D(110) in the (110) plane determined by X-ray diffraction is greater than 0 Å and 75 Å or less, and the crystallite size D(002) in the (002) plane is 75 Å or more and 110 Å or less.

The application provides a synthesis method of high-hygroscopic-dispersing-dye easy-to-dye functional polyester, which comprises the following steps: step one, esterification one-pot; step two, esterification two-pot; step three, final polymerization pot (polycondensation); and step four, discharging and slicing. The polyester is prepared by a continuous polymerization or an intermittent polymerization mode, p-terephthalic acid, ethylene glycol and ethylene glycol antimony are added in the esterification one-pot, polyethylene glycol, nano montmorillonite, cobalt acetate, stabilizer Irganox1010 and triphenyl phosphite are added in the esterification two-pot; the low-temperature coloring and the hygroscopic property of the polyester are realized by adding the polyethylene glycol, the easy-to-dye and the hygroscopic property of the polyester are realized by adding the nano montmorillonite, the ethylene glycol antimony is added as a catalyst, the polymerization reaction and the stability of the polyester are realized by adding the cobalt acetate, the stabilizer Irganox1010 and the triphenyl phosphite, and finally the easy-to-dye and the hygroscopic effect of the polyester are realized.

This invention discloses a dyeing process for antibacterial polyester fabric, belonging to the field of textile dyeing and finishing technology. The process first pre-shapes the polyester fabric using a hot air setting machine, then prepares a dyeing working solution containing disperse dyes, dispersing and leveling agents, and reactive antibacterial finishing agents. The fabric is then placed in a high-temperature, high-pressure dyeing machine for simultaneous dyeing and antibacterial treatment. By controlling the pH value of the dye solution, the heating rate, and the heat preservation parameters, the dye and antibacterial components are simultaneously dyed and fixed. After dyeing, the fabric undergoes sequential washing, reduction cleaning, neutralization, and cationic color fixing treatments. Finally, it is dried in sections and stretched for setting, resulting in the antibacterial polyester fabric. This invention integrates the dyeing process with antibacterial finishing, improving the compatibility of dyes and antibacterial agents, enhancing the fabric's antibacterial durability and color fastness, and is compatible with conventional textile dyeing and finishing equipment. It allows for wastewater recycling, combining high production efficiency and environmental friendliness, and is suitable for industrial-scale mass production.

The present invention provides an easily dyeable spandex and its preparation method. During the spandex preparation process, a polyether ester polyol with a specific structure is added to a glycol-based raw material, resulting in spandex fibers with a specific aromatic group-polyether block structure in their molecular soft segments. Compared to conventional spandex, the easily dyeable spandex of the present invention increases the dyeing rate and fixation ability of spandex for disperse and acid dyes without compromising its mechanical properties. By adjusting the mass ratio of the aforementioned aromatic group-polyether block structure in the spandex molecular soft segments, the spandex achieves sufficient dyeing rate and fixation while exhibiting superior alkali resistance.

The application discloses a preparation method of high-temperature disperse dyes, and belongs to the technical field of disperse dyes. The method comprises the following steps: preparing a coupling liquid with buffering capacity and preparing a diazonium salt solution with automatic control of pH, mixing the two, and allowing the reaction to proceed naturally in a suitable pH range by the buffering action of the coupling liquid without additional adjustment, and finally obtaining disperse red 167 dyes through post-treatment. The application adopts a synergistic process of buffer type coupling liquid preparation and stabilized diazonium salt solution preparation, and combines automatic control system to monitor and dynamically adjust the pH value in the reaction process in real time, so that the coupling and diazotization reactions are ensured to proceed in a precise and stable pH environment, the occurrence of side reactions is effectively avoided, and the reaction efficiency and product purity are improved.

This invention discloses a two-stage heat-setting method for dyeing nylon 6 DTY, comprising: feeding nylon 6 DTY yarn into a sealed activation chamber containing organic solvent vapor, and performing swelling pretreatment through a hot flow of organic solvent vapor to obtain pre-activated yarn; transferring the pre-activated yarn to a liquid dye bath containing disperse dye, nonionic leveling agent, penetration promoter, and pH buffer system for low-temperature diffusion dyeing to obtain colored yarn; dehydrating the colored yarn and then sending it to a first heat-setting zone for dry heat setting to obtain pre-set yarn; and sending the pre-set yarn to a second heat-setting zone for relaxation heat treatment in a mixed flow containing gaseous silane components to obtain the finished set yarn. This invention can improve the dye penetration uniformity and heat-setting stability of nylon 6 DTY after dyeing, reduce dye migration, color spots, and heat shrinkage fluctuations, and improve the color fastness and dimensional stability of the yarn.

This utility model discloses a grinding device for disperse dyes, including a housing. An inlet for the disperse dye is provided at the upper end of the housing. An inclined downward-facing abutment plate and a grinding plate rotatably abutting against the abutment plate are disposed inside the housing. An annular groove is formed between the grinding plate and the inner wall of the housing. A dispersing plate is fixed on the grinding plate, vertically opposite to the inlet. A guide groove extending downwards to the annular groove is circumferentially distributed on the dispersing plate. The grinding plate and dispersing plate are arranged below the inlet, slowly rotating to transport the disperse dye to be ground from the inlet. The guide groove is circumferentially formed on the dispersing plate. The rotating dispersing plate cooperates with the guide groove to circumferentially and evenly transport the disperse dye to the annular groove. The disperse dye moves downwards through the annular groove to between the abutment plate and the grinding plate, where it is ground by the rotation of the grinding plate, thus achieving more thorough and efficient grinding of the disperse dye.

This utility model relates to the field of extraction equipment technology, and in particular to a device for continuous distillation of disperse dye mother liquor to recover methanol and DMAC. The device includes a methanol extraction unit, a DMAC extraction unit, a condenser, and a methanol storage tank. The methanol extraction unit has an inlet pipe, an outlet pipe, and a vaporized methanol flow pipe. The output end of the vaporized methanol flow pipe is connected to the shell-side inlet end of the condenser. A liquefied methanol flow pipe is installed on the shell-side outlet end of the condenser, and its output end is connected to the methanol storage tank. A first reflux pipe is installed in the middle section of the liquefied methanol flow pipe and is connected to the inlet pipe. The methanol storage tank has a second reflux pipe, the output end of which is connected to the first reflux pipe. The output end of the outlet pipe is connected to the DMAC extraction unit. Through the cyclic extraction and purification loop of the methanol extraction unit, condenser, and methanol storage tank, the methanol recovery rate and purity are improved.

Provided are: a dispersion leveling agent in which, even when dyeing a fabric, in which an oil agent remains due to insufficient scouring, in high-temperature and high-pressure dyeing of a polyester-based fiber using a disperse dye, the removability of the oil agent from the fabric is favorable, aggregation of the dye is not caused, and uniform dyeing without unevenness is possible; and a method for producing a polyester-based fiber dyed product using the same. One aspect provides a dispersion leveling agent for dyeing a polyester-based fiber, the agent comprising: an (A) component which is a glycerin monofatty acid ester; a (B-1) component which is an ester compound having a specific structure and having a polyoxyalkylene moiety and / or a glyceryl moiety; and a (B-2) component which is a hydroxyl compound having a specific structure and having a polyoxyalkylene moiety and / or a glyceryl moiety.

This invention relates to the field of textile dyeing and finishing technology, and discloses an acidic reduction cleaning process for polyester and its blended fabrics after dyeing. In this acidic reduction cleaning process, after disperse dyeing, the residual dyeing liquor is retained without drainage. Acetic acid is directly added to adjust the pH of the system to 4.0-6.0, followed by the addition of an acidic reduction cleaning agent. The process is then carried out in situ reduction cleaning at 80-95℃ for 20-30 minutes. Subsequently, the process is completed with sodium carbonate neutralization soaping and two water rinses. Compared to traditional alkaline reduction cleaning, this invention avoids yellowing caused by a high-temperature alkaline environment, significantly improving color fastness and appearance stability. Simultaneously, it eliminates the need for initial water change, reducing the post-dyeing cleaning from 6 tanks to 4 tanks, saving 4481L of water and 50 minutes per batch, and significantly reducing the total nitrogen content of wastewater (≤5mg / L), achieving a synergistic optimization of high efficiency, energy saving, and environmental protection.

The application belongs to the technical field of detection, and particularly relates to a detection method and application of a sensitizing disperse dye in soil and sediment. The detection method of the sensitizing disperse dye comprises the following steps: (1) obtaining and extracting a sample, then treating the extracted sample to obtain a to-be-tested sample solution; configuring a standard solution, testing the standard solution by liquid chromatography, and establishing a standard curve of concentration and peak area; (2) detecting the to-be-tested sample solution by liquid chromatography, and quantifying by an external standard method to realize detection and analysis of the sensitizing disperse dye in the sample. The liquid chromatography detection method of the sensitizing disperse dye in soil and sediment provided by the application mainly aims at the technical problems of long time consumption, large solvent consumption, and decomposition of heat-sensitive dyes under high-temperature conditions in the current technology, and has the advantages of short processing period, relatively low instrument and technology cost, and small solvent consumption compared with the Soxhlet extraction method, accelerated solvent extraction, and oscillation extraction.

The application discloses a nanoscale colloidal dispersion dye and a preparation process and application thereof, and relates to the field of printing and dyeing materials.The preparation process comprises the following steps: step (1), preparing a nanoscale colloidal suspension by a reverse solvent precipitation method; step (2), preparing a modified nanoscale colloidal suspension; and step (3), preparing the nanoscale colloidal dispersion dye by freeze drying.The nanoscale colloidal dispersion dye has good dispersibility, a light response effect and the ability to control the release of a dyeing agent, and the inkjet ink prepared from the nanoscale colloidal dispersion dye has the light-controlled release characteristic, and the color development of a pattern after printing can be controlled.

This application relates to the technical field of textile printing and dyeing, specifically disclosing an environmentally friendly co-bath dyeing process for woven fabrics. The environmentally friendly co-bath dyeing process for woven fabrics includes the following steps: desizing and scouring: using a desizing and scouring solution to desizing and scouring the woven fabric to obtain a desizing fabric; pre-activation: using an activation solution to pre-activate the desizing fabric to obtain a pre-activated fabric; dyeing: immersing the pre-activated fabric in a dyeing vat, adding water, raising the temperature, adding low-temperature disperse dyes, bio-based ester environmentally friendly carriers, amphoteric leveling agents, penetrants, and buffers, and performing initial dyeing at a higher temperature; then adding reactive dyes, temperature-sensitive slow-release alkali agents, and anti-oligomery dispersants, and performing final dyeing at a higher temperature; post-treatment: directly adding a mixed soaping agent to the dyed vat for soaping, followed by washing, dehydration, and drying to obtain the dyed fabric.

This invention discloses a water-saving foam washing agent for polyester fabrics, relating to the fields of textile chemistry and dyeing and finishing technology. It comprises the following components by mass percentage: 0.1-4% isooctanol polyoxyethylene ether, 0.2-2% soda ash, 0.5-6% sodium hydrosulfite, and the balance being water. The treatment process of this water-saving foam washing agent for polyester fabrics mainly includes the following steps: After conventionally dyeing the polyester fabric with disperse dyes, it is dried without any washing treatment. The foam washing agent of this application is prepared into a foaming liquid and evenly applied to the fabric. It is then sealed with plastic wrap, steamed, and repeated twice. A foaming liquid is prepared with isooctanol polyoxyethylene ether, applied to the fabric, sealed with plastic wrap, steamed, and repeated three times. The treated sample is then removed, and foam is blown out using a gas spray gun until the blown foam is colorless. The advantages of this invention lie in the provided washing agent and treatment process, which have significant water-saving and low-foaming benefits.

This utility model relates to the field of disperse dye reaction vessel technology, and discloses a stirring paddle for a disperse dye reaction vessel, including a transmission rod installed inside the reaction vessel. A vessel lid is fixedly connected to the top of the reaction vessel, and a motor is installed on the top of the vessel lid. A connecting structure is provided on the top of the transmission rod inside the reaction vessel, and the connecting structure is fixedly connected to the output end of the motor. Two mounting sleeves are slidably connected to the outside of the transmission rod, and multiple first dispersion plates are fixedly installed on the outside of each of the two mounting sleeves. In use, the mounting sleeves are installed on the outside of the transmission rod and then fixed by the limiting structure. Second dispersion plates are connected to the outside of the mounting sleeves through the first dispersion plates. According to the usage, the second dispersion plates are rotated to adjust the angle. After adjustment, the transmission rod is fixedly connected to the output end of the motor through the connecting structure. The motor is started, driving the transmission rod to rotate, thereby dispersing the dye by the first dispersion plates and the second dispersion plates.

Chemical processing techniques for separating components of mixed textile feedstocks for recycling are described. In an embodiment, a method can comprise contacting a mixed textile feedstock comprising a polyester material, a cellulosic material, a disperse colorant, and elastomeric polymers with a solution comprising a cyclic ketone solvent at a first temperature to extract at least some of the disperse colorant and at least some of the elastomeric polymers, resulting in an intermediate textile feedstock excluding the at least some of the disperse colorant and the at least some of the elastomeric polymers; contacting the intermediate textile feedstock with the solution at a second temperature greater than the first temperature to extract at least some of the polyester material in the solution; and extracting the at least some of the polyester material from the solution, resulting in extracted polyester material. The method further results in isolated cellulosic material.

This invention provides a manufacturing process for a nylon-spandex imitation cotton textured fabric, comprising the following steps: S10, weaving: nylon and spandex are fed into a circular knitting machine to weave into a greige fabric; S20, pre-setting: the greige fabric undergoes pre-setting treatment; S30, scouring and relaxation: the pre-set greige fabric is scouring and relaxation treatment under low tension conditions; S4, alkali reduction: the scouring and relaxed greige fabric is impregnated with a working solution and then subjected to steaming or cold piling reaction, followed by water washing after the reaction; S5, dyeing: acid dyes, neutral dyes, or disperse dyes are used to dye the alkali-reduced greige fabric, controlling the temperature rise curve and dye bath pH value during the dyeing process, followed by soaping and color fixing treatment; S6, softening and setting: the dyed greige fabric is impregnated with a softener and then set to obtain the nylon-spandex imitation cotton textured fabric. The process of this invention achieves a cotton-like textured fabric with uniform dyeing, high color fastness, clear and durable textured patterns, stable dimensions, and no pilling or fuzzing.

This invention relates to the field of cotton-polyester fabric production technology, specifically disclosing a production process and equipment for microporous cotton-polyester absorbent and quick-drying fabric, comprising the following steps: 1) Dyeing process: Water is added to a pressure dyeing device, followed by the sequential addition of disperse dye, acetic acid, sodium acetate, and emulsifying dispersant; 2) Reduction washing process: Sodium hydroxide flakes are added, and the temperature is raised to 90-95℃ and maintained for 50-60 minutes, with sodium hydrosulfite added during the heating process; after the heat preservation is completed, the fabric is transferred to a dyeing treatment tank for water washing, followed by acid washing; 3) Surface dyeing process: After water washing, water is added, followed by the sequential addition of reactive dye, chelating agent, neutral polishing enzyme, bath softener, sodium sulfate, and 25-27 g / L soda ash at a fiber weight percentage of 1-2%; then water washing and acid washing are performed. This invention provides more uniform heating and a more stable temperature of the dyeing solution, allowing for more precise control of the heating rate.

The application discloses a cross-linking type color fixing agent for improving the dyeing fastness of polyester-cotton blended fabric and a preparation method thereof. The agent is a two-component system comprising a bio-based hyperbranched polymer and an organic metal complex catalyst. The polymer is formed by reacting one of a bio-based polycarboxylic acid and an anhydride with an epoxy compound to form a hyperbranched skeleton, and grafting a cationic quaternary ammonium salt side chain, with a residual hydroxyl value not less than 40 mg KOH / g and a branching degree of 0.5-0.65. The catalyst is a titanium ester-acetylacetone complex. When used, the catalyst component is added to the polymer component under stirring, and a working solution with a pH of 4.0-6.0 is obtained after aging. Through the dual effects of physical coating of the hyperbranched skeleton and chemical bonding of the cationic side chain, the fixing effect on polyester disperse dyes and cotton anionic dyes is synergistically improved, the wet rubbing and soaping fastness of polyester-cotton blended fabric is significantly improved under mild conditions, and the fabric hand is not affected.

This invention discloses a method for dyeing polyester-cotton blended fabrics with a coating. The specific steps are as follows: 1) Preparing a color paste; the color paste is composed of dye, POSS-based polyurethane acrylate core-shell emulsion, sodium carbonate, sodium alginate, and water. The color paste contains 3% dye, 10g / L of binder core-shell emulsion, and 2g / L of sodium alginate. Water is added to 50g, and the pH of the color paste is adjusted to 10-11 with sodium carbonate. 2) Padding the fabric with the color paste; two dips and two pads, with a padding rate of 70%-80%; 3) Pre-drying (90℃, 5min) → baking (150℃, 3min). This invention's method for dyeing polyester-cotton blended fabrics with a coating, using a mixed color paste of binder, reactive dye, and disperse dye, through a continuous pad-dyeing process, results in a short process flow, energy saving and consumption reduction, and good dye uniformity.