695results about How to "High color fixing rate" patented technology

The invention provides a composite reactive black dye, which is confected by (counted by weight quotient): dye shown by formula (1) of 50-80 quotient, dye shown by formula (2) of 15-40 quotient and dye shown by formula (3) of 5-10 quotient. Advantages of the dye are: level-dyeing property and fixation yield is high, quantity of the dye for dyeing fibrous material is small, and not fixed dye is easy to clean.

The invention relates to a method and a device for fixing cotton fabric reactive ink inkjet printing. The method comprises the following: (1) a step of pretreating fabric, which is to make thickener into stock thickener, dissolve alkaline agent, urea and antifoaming agent in water, add the alkaline agent, the urea and the antifoaming agent to the stock thickener, evenly mix the mixture so as to form a pretreatment solution, pad the fabric with the pretreatment solution and then dry the fabric; (2) a step of performing inkjet printing, which is to adopt reactive dye ink to perform inkjet printing to the pretreated fabric on a digital inkjet printing machine; and (3) a step of after-treating the fabric, which is to adjust humidity of the jet-printed fabric for 4 hours, adopt a contact-type dry-heat fixation device, regulate the temperature of a heating plate to be between 150 and 160 DEG C, set the treatment time to be between 40 and 80 seconds, complete fixation through contact-type dry-heat treatment, wash and dry or air the fabric, so as to obtain a finished product. The invention has the advantages of convenient operation of technological process, strong flexibility and high fixation rate, and solves the problems existing in small-batch steaming fixation.

The invention discloses a dyeing process of a pure cotton fabric, which comprises the following steps: a. taking one mass part of pure cotton fabric to be dyed; b. grinding a powdery reactive dye occupying 2-8% of the total mass of the fabric in a ball grinding mill for 2h, adding ethanol and grinding for 1h, wherein the mass of ethanol is nine times of that of the powdery reactive dye; c. adding decamethylcyclopentasiloxane, high-speed cutting for 5min at a rotating speed of 600r/min, and preparing a powdery reactive dye/decamethylcyclopentasiloxane suspension system, wherein the mass of the decamethylcyclopentasiloxane is 50 times of the total mass of the fabric; d. pretreating the pure cotton fabric to be dyed in an alkali solution of 1-130g/L so as to enable the pure cotton fabric tofully swell, and controlling the fabric liquid carrying rate to be 100-220% through a rolling machine; and e. immersing the treated fabric into the powdery reactive dye/decamethylcyclopentasiloxane suspension system, dyeing for 40min at normal temperature, slowly rising the temperature to 70-110 DEG C within 15min, fixing color for 10-60 min at the temperature of 70-110 DEG C, and finally reducing the temperature to the normal temperature to finish dyeing. The dyeing process disclosed by the invention has the advantages of high dyeing fixation rate, environmental-protection and no pollution.

The invention relates to active black dye which essentially comprises fuchsine component A, orange yellow component B and navy component C, and is based on the component A, the component B and the component C; the weight percentage of the component A is 1 to 25 percent, the weight percentage of the component B is 1 to 25 percent, and the weight percentage of the component C is 50 to 95 percent; and the component A comprises at least a dye shown as formula (I) and a dye shown as formula (II), the component B comprises at least a dye shown as formula (III) and a dye shown as formula (IV), and the component C comprises at least a dye shown as formula (V). The active black dye has the advantages of high product solubility, strong salt and alkali resistance, high uptake date and color fixing rate, excellent dyeing fastness and environmental protection.

The invention provides a method for preparing wool reactive-dye brilliant blue 4R. The method comprises the steps of condensing bromamine acid with M acid under the action of a catalyst, removing purple insoluble substances, condensing with 2,3-dibromo propionyl chloride, performing alkali treatment, neutralizing and blending. The method is characterized by removing the purple insoluble substancesat a temperature between 30 and 45 DEG C, thereby reducing a refining link in the prior art, for example, changing three times of refining in the prior art into one time of refining. More preferably,the method changes the steps of salting-out, filter-pressing, baking, grinding and blending in the prior technical method into the steps of directly blending neutralized color paste solution and thenperforming spray-drying.

The invention discloses a method for cation modification and salt-free dyeing of a cellulose fabric through one bath. The method comprises the following steps: (1) preparation of a modified dyeing liquid, including uniformly dissolving a reactive dye and sodium hydroxide in soft water, uniformly mixing the reactive dye and sodium hydroxide, adding a modifier in the obtained mixture, and performing uniform mixing to obtain the modified dyeing liquid; and (2) modification dyeing of a fabric, including performing dip padding treatment of a cellulose fabric with the modified dyeing liquid prepared in the step (1), winding the fabric into a roll after one dip and one padding, covering the roll with a film, putting the obtained roll at the room temperature, and performing room-temperature washing, acid washing, soaping, hot water washing, room-temperature washing and drying to the obtained fabric to obtain the salt-free dyed fabric. Cation modification and salt-free dyeing are carried out in one bath. The method is less in process, simple in technology and easy to operate. Acid washing and multiple water washing before dyeing in a two-bath method is not required, so that the method is less in water consumption and the process is easy to control. Modification and dyeing are carried out at the room temperature, and hydrolysis of the modifier and dye is reduced.

The invention discloses a middle-temperature type disperse dye compound and a preparation method and application thereof, relating to the technical field of a disperse dye. In order to solve the problem that the traditional middle-temperature types disperse dye is fewer in varieties, the invention provides the monoazo disperse dye compound and the preparation method and application thereof. The general formula of the middle-temperature type disperse dye compound is shown in (I); and the middle-temperature type disperse dye compound is used for dyeing polyester fibers, has the advantages of good dyeing effect at a high temperature and a high pressure, high fixation rate, low cost, high color yield, good fastness and simple production technology.

The invention provides an active black dye composition, which comprises 45-90 weight parts of at least a component shown as a formula (I), 1-30 weight parts of at least a component B shown as a formula (II), and 1-40 weight parts of at least as a component C shown as a formula (III) and / or 1-40 weight parts of at least a component D shown as a formula (IV). The reactive black dye composition provided by the invention can be used for textile printing and dyeing, has advantages of good promotion performance, strong salt tolerance, easiness for washing and excellent wet-processing fastness, and is a rare economical black dye.

The active composite dye includes at least one of compound A, at least one of compound B and at least one of compound C, with the compounds A, B and C being shown. The active composite dye is suitable for dyeing cellulose or protein fiber, and has the composition meeting the environmental and ecological requirement of Oeko-Tex Standard 100. The active composite dye has high build-up, good level dyeing property, good color reproduction, high dye uptake and other excellent performance.

The composite active black dye includes dye A in 40-70 wt%, dye B in 15-35 wt% and dye C IN 8-30 wt%. The composite active black dye is especially suitable for dyeing fiber material containing hydroxyl radical or carboxyl radical, such as cellulose fiber, cotton fiber, synthetic fiber, etc. and is one kind of ecological active black dye with high color fastness, high blackness and other features.

The invention discloses a dyeing and finishing process for linen and cotton blended fiber fabric. The dyeing and finishing process comprises preprocessing, pre-sizing, modified processing, dyeing, mordant removing, soaping, color fixing, after finishing, drying, sizing, calendaring and rolling. Helicase, scouring enzyme and alpha-amylase are used for pretreatment, modification treatment is adopted before dyeing, the performance of linen and cotton blended fabric is modified fundamentally, and the dye-uptake rate is increased; the dyeing procedure does not require a large quantity of alkaline substances and inorganic salt, a leveling agent, substitutive alkali, a migration inhibitor and a dispersing agent are added, the dye uniformity is improved, environment pollution is avoided due to use of natural dye, and requirements for environmental protection are met; self-cleaning processing is added in the after finishing procedure, and the self-cleaning capacity, the crease-resistant performance, the washing resistance and the color fastness of the fabric are improved; crease-resistance finishing is added, and the crease-resistant performance of the fabric is improved; the whole process is environment-friendly and pollution-free.

The invention provides a novel dyeing method of reactive dyes. The method includes the steps of conducting preprocessing, wherein loose fiber or yarn or fabric is preprocessed; conducting dyeing, wherein the preprocessed loose fiber or yarn or fabric is dyed in the reactive dyes through a water-saving dyeing method; conducting color fixing, wherein the dyed loose fiber or yarn or fabric is directly soaked in color fixing liquid to be subjected to color fixing and is then baked so that the dyeing process of the reactive dyes can be completed. In the dyeing step, the structure of the reactive dyes at least contains three active groups. According to the technical scheme, operation is easy, no salt is used in the dyeing process, and the good dyeing and color fixing effects can be achieved with a smaller volume of water; in addition, water used in the dyeing process can be directly evaporated in the subsequent operation process, no washing operation is needed after color dyeing and fixing, and therefore no dyeing wastewater can be produced after operation is ended, and clean production is achieved.

The invention provides a black dye mixture, which is mixed by (counted by weight quotient): dye shown by formula (1) of 50-80 quotient, dye shown by formula (2) of 9-30 quotient and dye shown by formula (3) of 4-20 quotient. The black dye mixture owns property of high level-dyeing property, high fixation yield and high jet black degree, and can combine with cotton, hemp, yarn, thread, hair and polyamide to form covalent bond. Moreover, the black dye contains no harmful arylamine and heavy metal element and does not decompose harmful matter to human body during using process.

The invention discloses an application of quaternary ammonium salt organic compound as a natural fibre and fabric accelerant. In the traditional dyeing technology of natural fibre and fabric thereof, a small quantity of quaternary ammonium salt organic compound is added to serve as accelerant to ensure that the mass percent concentration thereof is 0.1-0.5%; thus, the dye-uptake rate and the color fixation rate of dye can be greatly improved; salt is not used during dye-uptake, the dye-uptake rate can reach 95.0-99.5%, and the color fixation rate can be above 90%. The application not only can greatly improve the utilization ratio of dye, but also can lower dying waste water pollution.

The composite active black dye includes dye A in 40-70 wt%, dye B in 10-30 wt% and dye C IN 15-40 wt%. The composite active black dye is especially suitable for dyeing fiber material containing hydroxyl radical or carboxyl radical, such as cellulose fiber, cotton fiber, synthetic fiber, etc. and is one kind of ecological active black dye with high color fastness, high blackness and other features.

The invention relates to a cold pad batch (CPB) dyeing method of a pure cotton knitted fabric. The invention provides a pure cotton knitted fabric pretreatment liquor comprising sodium peroxide, sodium hydroxide and sodium silicate for CPB dyeing of the pure cotton knitted fabric, a dye comprising reactive dye, an alkali agent and a penetrating agent and a method for CPB dyeing by applying the pretreatment liquor and the dye. The method solves the problems of color difference, cloth cover black gas, color dot, dyeing speck, and the like to a certain extent, and has the advantage of high color fixation of reaching higher than 85 percent.

The invention discloses an active dye composition, which includes compound as showed in formula (A), formula (B), formula (C) and formula (D) and additive. 4 components of the active dye composition of the invention active dye composition are medium temperature dye, wherein the oil-water ratio, dye curve, affinity to cellulose, degree of dyeing, color fixing rate, sensitivity to salt and base, effect on bath ratio and sensitivity to temperature are very close. The composition has good dyeing synchronism and level dyeing property, and much higher color fixing rate, thereby being applicable for dip dyeing, continuous dyeing, cold dome, and printing and embossing of cellulose or protein fiber.

The invention discloses a dyeing and finishing process for polyester interweaved fabric. The dyeing and finishing process comprises the following steps: S1) pre-treating: performing scouring and bleaching and enzyme washing treatment on the polyester interweaved fabric in turn; S2) pre-shaping: performing pre-shaping treatment on the polyester interweaved fabric; S3) dyeing: soaking the polyester interweaved fabric into a dye liquor at a liquor ratio of 1:(10-30), wherein the dye liquor comprises 1-3% of reactive dyes, 2-5% of rare-earth complex micro-encapsulation disperse dyes, 5-15g/L anhydrous sodium sulphate, 1.5-3.5g/L pH buffering agent, 0.1-0.3g/L organic phenol halide and 0.01-0.05g/L organic fluorinated surfactant; and S4) finishing: performing softening and flame-proof treatment on the fabric in turn. The dyeing and finishing process for polyester interweaved fabric, disclosed by the invention, not only can obviously improve the performances, such as, hand feel and elasticity, of the fabric but also can achieve the effects of uniform dyeing, high color fastness and abundant color and luster.

The invention discloses a polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology. The technology comprises the steps of: S1, polyester dyeing: dipping a to-be-dyed polyester-cotton fabric in a dye solution containing microcapsule disperse dye, conducting heat preservation at 65-75DEG C, then performing heat preservation at 110-130DEG C, and carrying out cooling to 30-40DEG C, using chitosan to serve as the carrier of the disperse dye, and then conducting crosslinking curing; S2. cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, carrying out stirring reaction, then adding a reactive dye, performing heat preservation at 55-65DEG C, adding an organic solvent, conducting heat preservation at 70-90DEG C, then adding organic amine and sodium carbonate, and performing heat preservation at 60-100DEG C; and S3, aftertreatment: performing cooling to room temperature, and then carrying out primary washing, soaping and after-washing. The polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology provided by the invention has the advantages of simple process, little pollution, wide dye applicability, uniform coloring, high color fixation rate and good level-dyeing properties.

The invention discloses a dyeing and finishing process of polyester and cotton blended fiber fabric. The process comprises pretreatment, presetting, modification treatment, dyeing, mordant removal, soaping, color fixing, after finishing, drying, sizing, calendaring and rolling. Snailase and alpha-amylase are adopted for pretreatment, modification treatment is adopted before dyeing, the polyester and cotton blended fabric is modified fundamentally, and the dye-uptake of the fabric is increased; in the dyeing procedure, fewer alkaline substances and inorganic salt are used, a dye leveler, substitution alkali, a migration inhibitor and a diffusant are added, the dye leveling performance is improved, natural dye is used, environmental pollution is avoided, and the environment-friendly requirement is met; self-cleaning treatment is added during aftertreatment, and the self-cleaning capacity, the crease-resistant performance, the wash durability and color fastness are improved; silk fibroin and sericin are adopted for afterfinish, and the anti-pilling performance and the antistatic performance of the fabric are provided; the whole process is environment-friendly and pollution-free.

The invention discloses a composite active red dye which comprises the following components in percentage by weight: 60-90 percent of dye monomer A shown as the formula (1), 10-40 percent of dye monomer B shown as the formula (2) and 0-10 percent of dispersing agent MF and/or diffusant NNO. The composite active red dye can obtain higher dyeing level and bright colors when being used for dyeing cotton, hemp and viscose glue, and the friction resistant fastness and the perspiration and soaping resistant fastness can meet the standard requirement.

The invention relates to the technical field of dyeing and provides reactive dye cold pad-batch dyeing equipment and a dyeing method. The dyeing equipment comprises a first dipping tank, a first padder, a ventilating device, a second dipping tank, a second padder and a rolling and piling device. The dyeing method comprises the following steps of primary padding, wherein fabric sequentially passes through the first dipping tank and the first padder, and the first dipping tank contains reactive dye and deoxygenation enzyme; ventilating treatment for 1-4 minutes; secondary padding, wherein the fabric sequentially passes through the second dipping tank and the second padder, and the second dipping tank contains alkaline agents; aftertreatment. According to the reactive dye cold pad-batch dyeing method, the reactive dye and the alkaline agents are padded in a separated mode, and the problems that because the reactive dye and the alkaline agents react before padding, diffusivity of the reactive dye is decreased, and dyeing is unstable are solved; the selection range of the reactive dye and the color fixing alkaline agents is enlarged, the requirement for the equipment is lowered, a proportioning pump is omitted, and operation is convenient.

The invention relates to a multi-color roller gravure printing production method of a textile dye. According to the traditional printing method, more floating colors exist in the washing process, and the excessive wastewater discharge is easily caused. The invention comprises the following steps that: (1) pre-treatment working solutions are selected according to textiles of different types of fibers; (2) the pre-treatment working solutions of different concentrations are padded under the conditions that the immersion time is 5-30 seconds, the expression is between 50% and 100% and the speed is 10 to 40m/min, and are dried; (3) a special dye ink for gravure printing is selected; (4) through an improved multi-color roller gravure printing machine with adjustable printing thickness, lengthened width, enhanced drying and the like, the special dye ink is printed to the textile which is padded with the pre-treatment working solutions and is dried at a speed of 10-40 m/min and is dried; (5) the printed textile enters steaming equipment for steaming fixation; and (6) after fixation, the printed textile is subjected to washing, drying and other treatment processes to complete the entire printing production process of the textile.