64results about How to "Improve color fastness to rubbing" patented technology

The invention discloses a low-temperature dyeing and finishing technology of cottonette. The technology comprises the following steps: pretreatment; preshaping; modification treatment; dyeing; mordant removing; soaping; color fixing; post-treatment; drying; shaping; calendaring; rolling. According to the technology, pretreatment is carried out through the adoption of helicase and alpha-amylase, and modification treatment is carried out before dyeing, so that the property of the cottonette is fundamentally modified, and the dye-uptake of the fabric is increased; during the dyeing procedure, large quantities of alkaline substances and inorganic salt are not used, and a levelling agent, a low-temperature dyeing accelerant, a migration inhibitor and a dispersing agent are added, so that the dye uniformity is improved; during the whole dyeing process, the temperature is lower than 80 DEG C, and the dyeing process belongs to low-temperature dyeing, so that energy consumption is reduced; self-cleaning treatment is added in post-treatment, so that the self-cleaning capacity, wrinkle resistance and water washable firmness of the fabric are improved; post-treatment is carried out through the adoption of silk fibroin and sericin, so that the pilling resistance and antistatic property of the cottonette are improved; the whole technology is environment-friendly and free of pollution.

The invention discloses a natural dyestuff dyeing and finishing process of polyester fabric. The natural dyestuff dyeing and finishing process of the polyester fabric comprises pretreatment, preshaping, modification treatment, dyeing, mordant removing, soaping, fixation, finishing, drying, shaping, calendering and winding. According to the natural dyestuff dyeing and finishing process of the polyester fabric, helicase and alhpa-amylase are adopted to conduct pretreatment, modification treatment is radically conducted on the performance of the polyester fabric through a acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane, and the dyeing rate of the fabric is increased; in the dyeing process, a large amount of alkaline matter and inorganic salt are not used, a levelling agent and diffusant are added, the level-dyeing property is improved, natural dyestuff is used, therefore, environmental pollution is avoided, and requirements of green environmental protection are met; modification treatment and fire-retardant treatment are conducted on the fabric through montmorillonite, and the fire resistance of the fabric is high; anti-yellowing reagents are used in the preshaping and the shaping, and the final fabric is not prone to yellowing.

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 discloses an environment-friendly dyeing and finishing technology of a cotton cellulose fabric. The technology comprises the following steps: pretreatment; preshaping; modification treatment; dyeing; mordant removing; soaping; color fixing; post-treatment; drying; shaping; calendaring; rolling. According to the technology, pretreatment is carried out through the adoption of helicase and alpha-amylase, and acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane is adopted, so that the property of the cotton cellulose fabric is fundamentally modified, and the dye-uptake of the fabric is increased; during the dyeing procedure, large quantities of alkaline substances and inorganic salt are not used, and a levelling agent and a dispersing agent are added, so that the dye uniformity is improved; natural dye is used, so that environmental pollution is avoided, and the demand of environmental protection is met; modification treatment and fire retardant treatment are carried out on the fabric through the adoption of montmorillonite, so that the fire resistance of the fabric is high; self-cleaning treatment is added in post-treatment, so that the self-cleaning capacity, wrinkle resistance and water washable firmness of the fabric are improved; the whole technology is environment-friendly and free of pollution.

The invention discloses a dyeing and finishing process for polyamide fabric. The provided process comprises pretreatment, pre-setting, modified processing, dyeing, soaping, dye fixation, post-finishing, drying, setting, calendering and rolling. Supersonic waves are employed for pretreatment, fabric is subjected to low temperature plasma processing before the dyeing step, then 2,3-epoxy propyl trimethyl ammonium chloride is employed for modification processing of the fabric, the dyeing degree of the fabric is raised, and difficulty of the subsequent dyeing step is lowered. During the dyeing step, a lot of alkaline substances and inorganic salt are not used, natural dyes are employed, colophony powder is added as a dye-fixing agent, the dye-fixing effect is enhanced, environment pollution is avoided, and green environmental protection requirements are met. Montmorillonite is employed for modification processing and flame retardation processing of the fabric, and thus the flame retardation of the fabric is high. Anti-yellowing reagents are used both in the pre-setting and setting steps, and thus the final fabric is not easy to turn yellow.

The invention discloses a flax fabric dyeing and finishing process including pretreatment, pre-sizing, modification treatment, dyeing, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. Ultrasonic waves are used for pretreatment, and at the same time, the modification treatment step is added; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; montmorillonite is used for modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high; and an anti-yellowing reagent is used in the processes of pre-sizing, sizing and post-finishing, so that a final fabric does not easily turn yellow.

The invention discloses an aramid fabric high-efficiency dyeing and finishing process including modification treatment, scouring and dyeing in one bath, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. According to the dyeing and finishing process, before the dyeing process, a fabric is subjected to low temperature plasma treatment, then the fiber fabric is subjected to modification treatment with 2,3-epoxypropyltrimethylammonium chloride and chitosan, and thus the fabric dyeing degree is increased, and the difficulty of the subsequent dyeing steps is reduced; at the same time, ultrasonic treatment is adopted during modification treatment, so that the time is saved and the treatment efficiency is improved; with adopting of scouring and dyeing in one bath, the efficiency is increased, and the cost is reduced; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; and with increase of anti-yellowing finishing, a final fabric does not easily turn yellow.

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 low-temperature dyeing and finishing technology for bamboo fiber fabric. The low-temperature dyeing and finishing technology includes the steps of pretreatment, preshaping, modification treatment, dyeing, mordant removal, soaping, color fixation, after finishing, drying, shaping, calendering and rolling. Helicase, scouring enzyme and alpha-amylase are adopted for pretreatment, modification treatment is adopted before dyeing, the performance of the bamboo fiber fabric is modified fundamentally, and the dye-uptake rate of the fabric is increased; as in the dyeing working procedure, alkaline substance and inorganic salts are not used in quantity, and a levelling agent is added, the dyeing levelness is improved; environment pollution is avoided by using natural dyestuff, which meets the requirement for environmental protection; as self-cleaning treatment is added in after treatment, the self-cleaning capacity, crease-resistant performance and wash-resisting firmness of the fabric are improved; crease-resistant finishing is added, and therefore the crease-resistant performance of the fabric is improved; the whole technology is environmentally friendly and free from pollution.

The invention relates to a printing and dyeing method and particularly relates to a one-bath four-step process printing and dyeing method for multi-component fiber fabric. The method is performed according to the following steps: selecting, performing pretreatment process step, performing unhairing process step, performing printing process step, performing first-step fixing, performing second-step fixing, performing third-step fixing, performing fourth-step fixing, performing trimming process step and inspecting. According to the one-bath four-step process printing and dyeing method for the multi-component fiber fabric, the flame retardance is excellent, the printing color and luster are full and deeply moist, the hand feeling is good in elasticity, the color fastness is good, and the high-strength wear resistance is further realized.

The invention discloses a dyeing and finishing process for modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment, dyeing, soaping, fixation, after-finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the dyeing procedure, a base substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedures of pre-setting, sizing and after-finishing, so that the final fabric cannot become yellow easily.

The invention discloses a high-fixation high-flame retardation polyester fabric dyeing and finishing technology. The technology comprises pre-treatment, pre-setting, modification treatment, dyeing, soaping, dye fixation, after finishing, drying, setting, calendering and rolling. Supersonic wave is used for pre-treatment and a modification treatment process is used. In dyeing, a lot of alkaline substances and inorganic salts are avoided, natural dye is adopted and colophony powder is used as a dye-fixing agent so that dye fixation effects are improved, environmental pollution is avoided and environmental protection requirements are satisfied. Through modification and flame retardation treatment on the fabric by montmorillonite, fabric fire resistance is high. Through the dyeing and finishing technology, the high-fixation high-flame retardation polyester fabric is obtained.

The invention discloses a polyamide fabric modifying, dyeing and finishing process. The process comprises the steps of pretreatment, pre-setting, modification treatment, dyeing, soaping, color fixing, after treatment, drying, setting, calendering and rolling. Helicase and alpha-amylase are adopted for carrying out pretreatment, mixed liquor of nanometer titanium dioxide, gamma-(2, 3-epoxypropoxy) trimethoxypropylsilane and caprolactam is adopted for modifying performance of polyamide fabric fundamentally, and the dye-uptake rate of the fabric is increased; in the dyeing working procedure, a large number of alkaline substances and inorganic salts are not used, a leveling agent and a dispersing agent are added, and dyeing levelness is improved; meanwhile, as rosin powder is added to serve as a color fixing agent, the color fixing effect is enhanced, environmental pollution is avoided, and the requirement for environmental protection is met; moreover, montmorillonite is adopted for carrying out modifying and flame retarding on the fabric, and therefore the fire retarding property of the fabric is high; anti-yellowing reagents are used in the presetting and setting steps, and therefore the final fabric is not prone to yellowing.

The invention discloses an efficient dyeing and finishing process for a chemical fiber fabric, which comprises the procedures of modification treatment, one-bath scouring dyeing, soaping, fixation, after finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave; before the procedure of dyeing, the fabric is subjected to low-temperature plasma treatment, and then 2, 3-glycidyl trimethyl ammonium chloride is adopted for carrying out modification treatment on the fiber fabric, so that the degree of dyeing of the fabric is increased, and the difficulty of subsequent dyeing step is lowered; since one-bath scouring dyeing is adopted, the efficiency is increased, and the cost is lowered; in the dyeing procedure, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedure of sizing, so that the final fabric cannot become yellow easily.

The invention discloses conductive polyurethane superfine fiber suede leather and a preparing method thereof. The preparing method comprises the steps of drying superfine fiber suede leather at a temperature in a range of 80 DEG C to 140 DEG C for 5 to 30 minutes, and impregnating the superfine fiber suede leather in a conductive solution for 5 to 50 seconds, wherein, the liquor ratio is between 1:1 and 1:20; and drying the impregnated solution at a temperature ranging from 80 DEG C to 140 DEG C for 5 to 30 minutes to obtain the conductive polyurethane superfine fiber suede leather. According to the conductive polyurethane superfine fiber suede leather and the preparing method thereof, preparing processes are all basic processes of synthetic leather businesses, no special requirements are asked for devices and process conditions, and the prepared conductive polyurethane superfine fiber suede leather can be applied to products of electronic touch screen gloves and the like and has enormous market prospects.

The invention provides a formaldehyde-free fixing agent for all-color-series reactive dyes as well as a preparation method and a use method of the formaldehyde-free fixing agent. The formaldehyde-free fixing agent is formed by compounding a first fixing agent and a second fixing agent in a ratio being (1-3):(2-4) in parts by weight. According to the formaldehyde-free fixing agent for all-color-series reactive dyes, two different types of fixing agents are compounded, so that the formaldehyde-free fixing agent contains quaternary ammonium salt cation groups and reactive groups, the groups can have a certain synergistic effect, and the fixing performance of the formaldehyde-free fixing agent is more outstanding.

The invention provides a tobacco natural plant dye, a preparation method, and an application thereof. The tobacco natural plant dye is prepared from fresh tobacco as a raw material, which is washed with a surfactant and is subjected to bio-pretreatment impurity removal to obtain tobacco powder. The tobacco powder is extracted by a water solution or an ethanol water solution, wherein the pH value of the solution is controlled by NaHCO3 or ethylenediamine; the solution is subjected to heating extraction and is filtered to produce a natural dye stock liquid, which is concentrated, solidified and crushed to obtain the tobacco natural plant dye. In the method, tobacco pigments are used as natural dyes in the dyeing and finishing industry. The preparation method is simple and is high-effective. The tobacco natural plant dye can dye cotton, wool, cashmere and the like. Through regulation on a direct dyeing process, a pre-mordant dyeing process or a same-mordant dyeing process and types of mordants, fabrics in brown color, yellow-brown color, light-brown color, yellow color or green color can be produced. The dyed fabric has high color fastness to rubbing, has natural and gentle gloss and significantly improves usage value of tobacco and application value of the fabrics.

The invention relates to a method that a mercerized cotton fabric is colored in deep tone with reactive dye, which comprises that: 1) the cotton fabric can be pretreated by being added with bicyclic oxides and weak base in room temperature, and then the cotton fabric can be added with cyclodextrin of 0.5 percent to 9 percent(o.w.f) for further processing while being implemented with mercerization; 2) after being dyed for 10 to 20 min, the processed mercerized cotton fabric is added with salt in a bath ratio of 20-40 :1 under the temperature of 30 DEG C to 40 DEG C, and then is added with calcined soda after 10 to 20 min; after 20 to 40 min, the processed mercerized cotton fabric is washed and boiled with soap, and then is washed again and dried; meanwhile, which is compared with the dyeing of general mercerized cotton fabric; 3) the degree of exhaustion, fixation rate, K / S value and color fastness of the dye and dyed fabrics are tested. The method can effectively improve the deep-dyeing property of which the mercerized cotton fabric is dyed with mesothermal reactive dye in the condition of low-temperature fixation, moreover, the method has the advantages of low fixation temperature, low energy consumption, economy and environmental protection.

A technique for dyeing denim paint which is provided with laser modification action is disclosed and relates to a technique for weaving, in particular to a technique for dyeing denim paint, which comprises the following steps: firstly, unwinding a denim (9) from a winding roller through a fabric guide roll (1), and then entering in the laser illumination area to do laser process, making the denim (9) processed by laser enter on the upper surface of a pallet (6), entering the denim (9) which is provided with the paint under a scraper (4), finally, conducting the dyed denim into the next procedure by a fabric guide roll (5). The technique for dyeing denim paint greatly improves the dye-uptake of paint dye. The structure change of the processed material is almost limited in the thin surface scale, which doesn't influence the body property of the fiber material.

The invention discloses a fixed color label cloth. The fixed color label cloth is characterized by comprising basic layer cloth and a coating layer arranged on the basic layer cloth, wherein the thickness of the basic layer cloth is 0.110mm-0.130mm, the hardness is 2.6-3.5, the gram weight is 128g / m<2>-188g / m<2>, and the thickness of the coating layer s 0.120mm-0.150mm; the specification of yarns for manufacturing the basic layer cloth is 100-150D, the warp density is 95 / cm-130 / cm, and the weft density is 33 / cm-42 / cm. The fixed color label cloth provided by the invention has the advantages that the fixed color label cloth can be subjected to special treatment after dyeing, the colour fastness, flatness and uniformity are improved, and the fixed color label cloth is realized.

The invention discloses a dyeing apparatus and a dyeing method. A rectangular box is provided; a dye liquid is charged into the rectangular box; an inert gas is introduced into the rectangular box toform an inert environment; therefore, yarns are dyed in the dye liquid. The yarns are switched in the state of being soaked in the dye liquid and the state of being outside the dye liquid under inertgas pressurizing; so that full soaking time is extended for the yarns in the dye liquid, the dye liquid is never oxidized; dye molecules have a concentration difference when on the surface of yarn fibers and when inside the yarn fibers, so that the dye molecules can migrate from the surface of the yarn fibers to the inside of the fibers, the dye diffusion and fixing processes are more sufficient,yarn dyeing rate is increased, and dye utilization rate in the whole dyeing process is increased by about 8-18%; the quantity of dye vats is greatly decreased, so that equipment space is diminished; total volume of the dye liquid sealed by the inert gas is 2 / 5 of the total volume of a traditional dye liquid.

The invention discloses a wool fabric dyeing process of a rhizoma dioscoreae cirrhosae extracting solution. The wool fabric dyeing process comprises the steps: textile pigment extraction, dyeing and fabric washing and drying. According to the wool fabric dyeing process of the rhizoma dioscoreae cirrhosae extracting solution, the rhizoma dioscoreae cirrhosae extracting solution is adopted as a dyeto directly dye a wool fabric, carboxymethyl cellulose sodium is added into dye liquor, the hue of the dyed wool fabric is deepened, and the color fastness to rubbing of the fabric is improved by onelevel.

The invention provides a soaping agent and a soaping technology, and relates to the technical field of soaping technology. The soaping agent comprises the following raw materials: laccase, peroxidase,peroxidase, a surfactant, a pH modifier and an additive; and the activity of the laccase is strengthened by adding a laccase interbody, so that the soaping agent is pollution-free while being high indecoloration capacity. According to the soaping technology, soaping is carried out by using the soaping agent, so that surface dyeing of textile can be removed relatively sufficiently. According to the soaping technology, the color fastness to rubbing of the textile is improved, the using amount is small, the technology is water-saving and energy-saving, the production efficiency further can be improved, and the washing residue chromaticity of the dyed textile can be reduced effectively. According to the soaping agent and the soaping technology, the technical problem that a pollution-free soaping agent with low energy consumption and a soaping technology thereof existing in the prior art is lacked is solved.

The invention relates to a sophora japonica plant dye extraction method and a dyeing method through dye, belongs to technical field of dye extraction, aims to solve the problems that the conventional extraction efficiency is low and the processing is complex, and provides the sophora japonica plant dye extraction method the dyeing method through the dye. The extraction method comprises the following steps: mixing dry sophora flower powder with ice powder, and stirring at a high speed for pre-treatment; directly adding water for extraction, filtering and collecting extracting liquid; removing waste residues; concentrating collected extracting liquid under a vacuum condition till yellow solid is separated out, cooling, centrifuging and drying so as to obtain corresponding dye. The dyeing method comprises the following steps: soaking a fabric into an alums aqueous solution for pretreatment; soaking the pre-treated fabric into dye liquor for dyeing; adding a mixed aqueous solution of magnesium sulfate and potassium acetate for color fixation, washing, drying and carrying out color setting so as to obtain the dyed fabric. The advantages of high extraction efficiency and high total extraction ratio are realized, and meanwhile, the effect of environment friendliness in the dyeing process is realized.

The invention relates to a direct / disperse one-bath method short-process dyeing and finishing technology for a polyester-cotton knitted fabric. The direct / disperse one-bath method short-process dyeingand finishing technology comprises one-bath method pretreatment: at the bath ratio of 1 to 8, treating 10g / L of sodium hydroxide, 15g / L of 30 percent hydrogen peroxide, 2g / L of sodium silicate, 2g / Lof sodium lauryl sulfate, 3g / L of secondary alkane sulphonate sodium and 3g / L of AEO-9 at the temperature of 95 to 100 DEG C for 45 minutes; dyeing: under the conditions that the bath ratio is 1 to 8,and the amount of disperse dye is 1 to 5 percent of (on weight of fabric), adjusting the pH value to 5.5 to 6 and carrying out thermal insulation at the temperature of 130 DEG C for 45 minutes; adding 1 to 5 percent of direct blend dye (on weight of fabric), 20 to 30g / L of anhydrous sodium sulphate and carrying out thermal insulation at the temperature of 95 DEG C for 30 minutes; soaping: at thebath ratio of 1 to 10, using 2g / L of detergent 209 and 2g / L of chelating dispersant and soaping at the temperature of 90 to 95 DEG C for 10 minutes; aftertreatment: taking 0.5g / L of compound antibacterial emulsion and 0.7g / L of amino-silicone oil and drying at the temperature of 175 to 185 DEG C.

The invention relates to a colored polyester staple fiber with a skin-core structure and a preparation method thereof, belongs to the technical field of colored polyester staple fibers, and solves thetechnical problem that the surface color of the colored polyester staple fiber has different shades, and reduces the pollution to the environment. The colored polyester staple fiber comprises 50 to 80 wt% of a core layer and 10 to 20 wt% of a skin layer, wherein the skin layer coats the outer peripheral surface of the core layer, the core layer comprises an uncolored core layer fiber, the skin layer comprises an uncolored skin layer fiber, and masterbatch for coloring the skin layer fiber, and the weight of the masterbatch is 10 to 20 wt% of the total weight of the skin layer. The colored polyester staple fiber of the skin-core structure disclosed by the invention realizes the dope-dyeing of the colored polyester staple fiber by adding the masterbatch in the skin layer, makes the surfacecolor of the color polyester staple fiber more uniform and brighter, and further reduces the use amount of the masterbatch and production cost.

The invention provides a preparation method of a nanometer titanium dioxide modified color-fixing agent emulsion. The nanometer titanium dioxide modified color-fixing agent emulsion is prepared from,by weight, 15-20 parts of modified nanometer titanium dioxide dispersion, 25-40 parts of waterborne polyurethane, 4-12 part of hydroxypropyl silicone oil, 9-14 parts of polyols, 3-7 parts of lac, 5-10parts of methyl methacrylate, 0.5-2 parts of an initiator and 700-750 parts of water. The preparation method of the nanometer titanium dioxide modified color-fixing agent emulsion comprises the stepsof 1) preparing the modified nanometer titanium dioxide dispersion; 2) preparing mixed liquor B; 3) mixing the modified nanometer titanium dioxide dispersion, the mixed liquor B and the other materials in an emulsifying reactor for a while to obtain the nanometer titanium dioxide modified color-fixing agent emulsion. Quasi-esterification reaction is applied herein to performing surface treatmenton the titanium dioxide, thus improving dispersibility of nanoparticles in organic matters and further enhancing the mechanical performance of a color-fixing agent.

The invention discloses a method of dyeing and finishing cationic polyester fabrics. The method comprises the steps of carrying out the following operations on the cationic polyester fabrics in sequence: desizing; alkali reduction; dye preparation; high temperature and high pressure one-bath two-step dyeing, wherein pre-dipping dyeing operation of the cationic polyester fabrics is that the cationic polyester fabrics start to be dyed at 60-65 DEG C, and the temperature rises to 80 DEG C and is kept for 5-8 min; cationic dyes color the cationic polyester fabrics, and the temperature rises to 110DEG C and is kept for 9-12 min; the dispersal coloring of the cationic polyester fabrics is operated, and the temperature rises to 130 DEG C and is kept for 45-55 min; and the color stabilization ofthe cationic polyester fabrics is operated, and the temperature rises to 80 DEG C and is kept for 40-60 min; soaping; reduction clearing; and sizing. According to the method, dyed and finished cationic polyester fabrics have good color fastness, and the problem of poor color fastness of cationic polyester fabrics dyed and finished with the prior art is solved.

The invention belongs to the field of textile and dyeing and relates to a dye-fixing agent for a bright cloth, a preparation method of the dye-fixing agent and a method for preparing the bright cloth. Specifically, the dye-fixing agent for the bright cloth contains the following components in parts by weight: 3-5 parts of triptolide, 2-4 parts of triptonide, 4-6 parts of dulcitol, 10-20 parts of Machilus butyrolactone, 10-20 parts of valepotriate, 6-14 parts of soybean polypeptide, 6-14 parts of 1, 4-diguanidylbutane and 80-120 parts of water. The invention further relates to a use of the dye-fixing agent for the bright cloth in preparing the bright cloth. The dye-fixing agent for the bright cloth provided by the invention can form a layer of reticular film in a cross-linking manner on the surfaces of bright cloth fibers, the surface color fastness to rubbing and color fastness to sunlight of the bright cloth can be effectively improved, and the dye-fixing agent for the bright cloth has the characteristics of natural and environmental-friendly raw materials, no influence on the surface gloss of the bright cloth and good dye-fixing effect.