113 results about "Disperse dye" patented technology

The invention provides a dyeable high-temperature-resistant modified meta-position aramid fiber and a preparation method thereof. The modified meta-aramid fiber is mainly prepared from a spinning solution prepared from m-phenylenediamine, methyl 3, 5-diaminobenzoate, 3, 3 '-diaminodiphenyl sulfone and an isophthaloyl dichloride copolymer through dry spinning, and the dye uptake of a disperse dye is not lower than 85%; the thermal decomposition temperature is not less than 400 DEG C. The preparation method comprises the following steps. S1, fully continuous polymerization; s2, continuously neutralizing and conveying; s3, direct spinning; and S4, fiber forming and post-treatment. The method has the advantages that (1) the quality difference between batches in the traditional intermittent method is eliminated, and the uniformity and stability of the product performance are realized; and the preparation process is compact, the production efficiency is high and the energy consumption is low. And (2) the dyeing performance of the prepared fiber is obviously improved, the inherent high-temperature-resistant characteristic of the aramid fiber is maintained, and the mechanical property is excellent. And (3) the application range of the meta-position aramid fiber is expanded.

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 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.

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 present application belongs to the technical field of textiles, and relates to a preparation method of a polyester fabric with a gradient dyeing effect, which comprises the following steps: after a fabric is woven from dynamic profiled yarns, the fabric is subjected to desizing and scouring treatment, and then is subjected to heat setting; subsequently, the heat-set fabric is immersed in a dye bath containing disperse dyes, and is subjected to dyeing by using a high-temperature and high-pressure dyeing method, so as to obtain a polyester fabric with a gradient dyeing effect; the cross-sectional shape of the monofilament of the dynamic profiled yarns periodically changes along the length direction, and the cross-sectional shape of the monofilament on each period is circular, flat and triangular in sequence. The present application realizes a differentiated dyeing effect, and simultaneously controls the timing of the nozzles, sets the cross-sectional change period, and makes the monofilament form a regular alternation of 'light-mid-dark' along the length direction, so that the finally prepared fabric presents a gradient dyeing effect after dyeing.

The present disclosure relates to the field of textile printing and dyeing technology, and particularly relates to an environmentally-friendly liquid dispersion dye with ultra-low pollution; the environmentally-friendly liquid dispersion dye is prepared by the following steps: preparing a Hippophae rhamnoides extract, dissolving the Hippophae rhamnoides extract in an acid solution and mixing with aluminum hydroxide; preparing a Ginkgo biloba extract, dissolving the Ginkgo biloba extract in an acid solution and mixing with aluminum hydroxide; then mixing the two in a sodium bicarbonate aqueous solution with a complexing agent and a stabilizer, drying to obtain a solid, and finally reacting the solid with polyethyleneimine to obtain an environmentally-friendly orange dye with good dispersibility.

The invention relates to the technical field of textile printing and dyeing, and particularly discloses a disperse dye as well as a preparation method and application thereof. The disperse dye provided by the invention comprises a disperse pigment and an auxiliary agent, the auxiliaries comprise ionic liquid containing imidazolyl, sodium gluconate and sucrose stearate. According to the invention, specific components of the auxiliary agent in the disperse dye are limited, and all the components have a synergistic effect, so that the structural stability of the disperse pigment in an alkali and hydrogen peroxide coexistence environment is obviously improved, and the dyeing uniformity and stability of the disperse dye on polyester-cotton knitted fabric can also be improved.

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 invention discloses an azo compound as well as a preparation method and application thereof, belongs to the field of dye chemical industry, and particularly provides the azo compound which is of a structure as shown in a general formula I. The azo compound disperse dye disclosed by the invention has excellent pH dependency and thermal migration resistance, and is especially suitable for dyeing application of polyester-cotton fabrics.

The application discloses a high-temperature deblocking crosslinking type silicone modified waterborne polyurethane for dispersion dyeing free washing and a preparation method thereof. The silicone modified waterborne polyurethane is composed of two components A and B. The component A is a blocked type silicone modified waterborne polyurethane, which is prepared by condensation of isophorone diisocyanate, poly-1,4-butanediol adipate, polytetrahydrofuran diol, double-hydroxyl blocked polydimethylsiloxane, 2,2-dimethylol butyric acid and 1,4-butanediol, and blocking with a high-temperature deblocking blocking agent. The component B is diethylenetriamine. The silicone modified waterborne polyurethane is applied to digital jet dyeing of polyester fabric with dispersion dyes, so that reduction cleaning and washing processes can be omitted. The surface color yield and penetration rate of the jet-dyed fabric are excellent, the dry rubbing fastness is improved to grade 4-5, the wet rubbing fastness is improved to grade 4, and the soaping fastness can reach grade 5, so the silicone modified waterborne polyurethane has a wide application prospect.

The invention provides an environment-friendly disperse dye and a preparation method thereof. The preparation method comprises the following steps: a pretreatment step: refining 3, 4-dichlorophenyl thiourea by using an organic solvent to obtain refined 3, 4-dichlorophenyl thiourea; a closed loop step: under an acidic condition, the refined 3, 4-dichlorophenyl thiourea is subjected to closed loop to obtain a thiazole mixed slurry, and the thiazole mixed slurry comprises 2-amino-5, 6-dichlorobenzothiazole and 2-amino-6, 7-dichlorobenzothiazole; a diazotization step: under an acidic condition, carrying out a diazotization reaction on the thiazole mixed slurry and a diazotization reagent to obtain a diazotization liquid; and a coupling step: carrying out a coupling reaction on the diazonium liquid and an esterification reagent, and carrying out crystal transformation to obtain the environment-friendly disperse dye. The environment-friendly disperse dye disclosed by the invention is qualified in environment-friendly index, high in yield and purity and suitable for mass production.

This invention relates to a novel heterocyclic azo disperse dye and its preparation method. The dye has the following structural formula: R1, R2, R3, H, CH3, NHCOCH3; D1 is a substituted benzothiazole or benzoisothiazole. The compound provided by this invention can be used as a dye for dyeing polylactic acid fibers, and has the characteristics of high dyeing rate, bright color, excellent color fastness and strong industrial feasibility.

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.

The invention relates to an ink set, and to a printing method using such an ink set, said ink set comprising at least a cyan ink, a magenta ink, a yellow ink and a black ink comprising disperse and / or solvent dyes in an aqueous vehicle, wherein said disperse and / or solvent dyes are selected from the group consisting of Disperse Yellow (64), Disperse Yellow (114), Solvent Orange (11), Solvent Violet 36, Solvent Violet (14), Solvent Red (169), Solvent Red (195), Disperse Blue 60, Disperse Blue (165), and mixtures thereof.

The utility model provides disperse dye particle size monitoring equipment which comprises a monitoring workbench and a particle size measurer body, a dye particle size monitoring mechanism is arranged at the top of the monitoring workbench, and a dye processing mechanism located on the right side of the dye particle size monitoring mechanism is arranged at the top of the monitoring workbench. A cleaning mechanism located in front of the dye particle size monitoring mechanism is arranged at the top of the monitoring workbench. Through the design of the dye particle size monitoring mechanism, the particle size measurer main body can be assisted to monitor the particle size of the disperse dye, and if the value of the particle size is large, a first electromagnetic valve is closed, and a second electromagnetic valve is opened, so that the dye is output from the end part of a second discharge pipe through an inner cavity of a treatment bin; according to the dye processing device, particles in the dye can be filtered in the processing bin and then smashed, the particles are processed into the dye in a normal state to be output, and therefore the problem that a dye nozzle is prone to being blocked due to the fact that the particle size of the disperse dye is large can be solved, and meanwhile the product quality can be guaranteed.

The present application relates to blood trace detection technical field, specifically relates to a kind of blood trace developing agent and its developing method and application.The blood trace developing agent of the present application includes disperse dye and solvent;The concentration of the disperse dye is 2%~4%, and the solvent is water, methanol, anhydrous ethanol, mordant aqueous solution, glacial acetic acid aqueous solution, glacial acetic acid methanol mixed solution, glacial acetic acid ethanol mixed solution or disperse agent mordant mixed aqueous solution.The blood trace developing agent provided by the present application is widely applicable, can make the blood trace on various different types of object appear, the blood handprint line of appearance is coherent, high definition, object background is not dyed or slightly dyed, line and background contrast is big, with good appearance effect best.

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 application discloses a deinking agent and a deinking process for heat transfer printing waste paper. The deinking agent for heat transfer printing waste paper comprises a solubilizing agent, a surfactant and a penetrating agent; the solubilizing agent is selected from polyesters; the polyester contains an ethylene glycol phthalic acid polycondensation structure; the surfactant comprises at least one of triphenyl ethane phenol polyoxyethylene, triphenyl ethane phenol polyoxyethylene sodium sulfate, glycerol ether oleic acid ester or oleic acid polyoxyethylene ester; and the penetrating agent comprises at least one of ethylene glycol butyl ether, diethylene glycol butyl ether or ethylene glycol phenyl ether. Through the synergistic effect of the specific solubilizing agent, the surfactant and the penetrating agent, the obtained deinking agent has good affinity to disperse dyes and hydrophobic impurities, can effectively perform capacity expansion, emulsification and penetration on the inks such as disperse dyes and hydrophobic impurities remaining on the heat transfer printing waste paper, so that the effective removal of the inks remaining on the heat transfer printing waste paper is realized, and the whiteness of the recycled paper is improved.

The invention provides a direct coupling type double-chromophore disperse dye as well as a synthesis method and application thereof, and belongs to the technical field of disperse dyes. Introducing a reaction active group into the coupling component I to obtain a coupling component I containing the reaction active group; directly coupling a coupling component II with a reaction site with a coupling component I containing a reaction active group to obtain a coupling component with double coupling sites; the coupling component of the double coupling sites and the diazo component are subjected to bilateral coupling, and the direct coupling type double-chromophoric disperse dye is obtained.

This invention provides a processing apparatus for hydroxylated intermediates of disperse dyes, comprising a fixed frame, mounting brackets fixedly connected to both sides of the fixed frame, support plates fixedly connected to both sides of the top of the fixed frame, a grinding mechanism disposed in the middle of the fixed frame, a lifting mechanism disposed on the top of the mounting brackets, a support column fixedly connected to one side of the top of the fixed frame, and a liquid crystal display panel fixedly connected to the top of the support column. This invention utilizes the cooperation of a telescopic return spring on a through rod and a second limiting circular plate, which ensures full contact and engagement between the grinding disc and the grinding turntable for grinding the disperse dye. Simultaneously, the rotation of a drive motor drives the active grinding disc to rotate, facilitating the grinding of the disperse dye. The rotation of a small motor drives a lead screw, allowing the adjusting seat on the first lead screw to slide up and down on a guide rod, thereby adjusting the grinding turntable and facilitating thorough grinding.

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 invention discloses a sulfonate type azo disperse dye with self-dispersing performance, and a preparation method and application thereof, relates to the technical field of fabric dyeing, and aims to solve the problem of lack of a self-dispersing dye capable of achieving optimal balance between a dye molecule hydrophobic skeleton and a hydrophilic sulfonic acid group. According to the technical scheme, the compound is characterized by comprising a compound as shown in a general formula (I), in the formula (I), R1 is H, C1-C4 alkyl, C1-C4 alkoxy, halogen, nitryl or cyano; ar is a benzene ring or a naphthalene ring; m is alkali metal ion Na < + > or K < + >; and n is an integer of 1 or 2. According to the sulfonate type azo disperse dye with the self-dispersing performance, disclosed by the invention, a specific number of sulfonic acid groups are introduced into a specific position of an azobenzene hydrophobic skeleton of the dye, so that perfect unification of the self-dispersing performance, the high-temperature stability and the dyeing performance is realized.

The invention relates to the technical field of textile printing and dyeing, in particular to oxygen bleaching and dyeing one-bath liquid for polyester-cotton fabric and an oxygen bleaching and dyeing one-bath short-process dyeing and finishing process. The oxygen bleaching dyeing one-bath lotion comprises the following components in percentage by weight: 0.8-3.6% of a composite oxygen bleaching agent; 0.2 to 0.4 percent of a pH buffer system; 0.1 to 0.2 percent of an oxygen bleaching stabilizer; 0.05%-0.1% of a chelating agent; 0.05 to 0.1 percent of a penetrating agent; 0.1 to 0.5 percent of alkali-resistant disperse dye; 0.6 to 1.0 percent of bio-based hydroxy fatty acid ester based peroxyimide; and the balance of deionized water. The composite oxygen bleaching agent comprises hydrogen peroxide and TAED in a molar ratio of 1: (0.3-1). According to the technical scheme provided by the invention, working procedures can be combined, and whiteness and dyeing uniformity of the fabric are considered while water consumption is reduced.

The invention discloses a high-temperature and high-dye-uptake dyeing method suitable for a disperse dye for a polylactic acid textile, and belongs to the technical field of textile. The dyeing method comprises the following steps: placing a disperse dye filter cake in solvent oil to dye a to-be-dyed object, including adsorption, diffusion and washing processes of disperse dye, and comprising the following steps: dyeing the to-be-dyed object in the solvent oil at room temperature by using the disperse dye filter cake, heating to 60-80 DEG C, then heating to 120-140 DEG C, keeping the temperature for 30-60 minutes, and then cooling to 40-50 DEG C; and washing and drying the to-be-dyed object after dyeing. The dyeing method is suitable for high-temperature and high-dye-uptake dyeing of the PLA textile by the disperse dye, the mechanical strength of the PLA textile is not affected at high temperature, the dye-uptake of the disperse dye is improved, and application of the PLA textile in the field of textile and clothing is accelerated.

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.