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36results about How to "Good color fastness to rubbing" patented technology

Method for dyeing fabric by using natural blue pigment

The invention discloses a method for dyeing a fabric by using natural blue pigment. The method for dyeing the fabric by using the natural blue pigment includes following steps: using strains for fermenting the blue pigment, obtaining fermentation liquor, and then extracting the blue pigment so as to obtain blue pigment powder; preparing dye liquor from the blue pigment powder and water, raising temperature of the dye liquor to 35-45 DEG C, placing the fabric in the dye liquor, keeping the fabric in the dye liquor for 10-20min, and then adding sodium chloride, keeping for 10-20min, and next heating the dye liquor to 75-85 DEG C by using temperature of 0.5-5 DEG C, adding sodium carbonate, keeping temperature for 30-60min at temperature of 75-85 DEG C, and then cooling the fabric, and finally completing dyeing of the fabric after washing the fabric with cool water and drying the fabric. The method for dyeing the fabric by using the natural blue pigment extracts the blue pigment, uses the blue pigment as natural pigment obtained through microbial fermentation, and endows the pure cotton fabric with antibacterial performance in dyeing, and the fabric is bright and colorful in color, and has good color fastness to rubbing. The dyeing method is easy to operate and implement, facilitates industrial production, and has a wide application prospect.
Owner:JIAXING UNIV

Dyeing process of fire retardant fibers

The invention aims at providing a dyeing process of fire retardant fibers. The dyeing process comprises the following steps: step 1, desizing: adding the fire retardant fibers into a desizing eater solution at 50-60 DEG C, keeping the heat and washing with water; step 2, rinsing: adding the fire retardant fibers subjected to the desizing into a rising water solution at 95-100 DEG C, keeping the heat and washing with the water; step 3, dehairing: taking the rinsed fire retardant fibers and removing hairs on the surfaces of the fire retardant fibers; step 4, dyeing: taking the unhaired fire retardant fibers and adding the unhaired fire retardant fibers into water at 15-35 DEG C; gradually heating a water bath to 100-102 DEG C; adding dyestuff when the water bath is 68-71 DEG C and adding a dyestuff auxiliary agent when the water bath is 95-100 DEG C; keeping the heat at 100-102 DEG C for 0.5-1 hour; gradually heating the water bath to 130-135 DEG C and keeping the heat at 130-135 DEG C for 0.5-1 hour; gradually cooling the water bath to 75-80 DEG C; taking out the fire retardant fibers and soaping at 75-80 DEG C for 0.1-0.5 hour; and step 5, finishing: taking the dyed fire retardant fibers and sequentially carrying out air finishing and full decatizing finishing on the dyed fire retardant fibers. The dyeing process has the advantage that the dyeing effect is improved.
Owner:HANGZHOU ZHUODA PRINTING & DYEING CO LTD

Preparation method and application of active hydrophilic formaldehyde-free color fixing agent

The invention relates to a preparation method of an active hydrophilic formaldehyde-free color fixing agent. The preparation method comprises the following steps: S1) stirring concentrated hydrochloric acid, slowly dropwise adding tertiary amine, carrying out a heat-preserved reaction, and regulating the pH value of the obtained solution to 3-4 by using tertiary amine; S2) carrying out heating to45 DEG C, slowly and dropwise adding epoxy chloropropane, keeping a temperature at 45-55 DEG C, conducting a reaction for 1.0-2.5 hours under a heat preservation condition so as to obtain a homogeneous solution, regulating the pH value, and performing cooling to obtain an intermediate product; and b) adding the intermediate product, polyethyleneimine and deionized water into a reaction bottle, slowly and dropwise adding epoxy chloropropane while stirring, carrying out a heat-preserved reaction at 20-40 DEG C for 5-7 hours, regulating the pH value to 6-7, and performing cooling to obtain the hydrophilic color fixing agent. The hydrophilic formaldehyde-free color fixing agent disclosed by the invention has a relatively high cation degree and reactive epoxy groups, and also has good hydrophilicity and color fixing effect; and after a cotton fabric is subjected to color fixing treatment with the agent, the washing fastness of the fabric reaches level 3-5 and accords with the national regulation that hygroscopicity is within 5 seconds in China, the finishing of a subsequent procedure can be reduced, and the use requirements of printing and dyeing plants are met.
Owner:DYMATIC CHEM

Aramid fiber antibacterial dyeing one-bath treatment method

The invention provides an aramid fiber antibacterial dyeing one-bath treatment method. The method comprises the following steps of S1, sequentially adding a carrier and sodium sulfate into a cationic dye to obtain a mixed solution; S2, adding silver nitrate into the mixed solution prepared in the step S1, adjusting the pH value to 3-5 after uniform stirring, and obtaining a dye liquor; and S3, putting an aramid fabric and the dye liquor obtained in the step S2 into a dyeing cup, putting the dyeing cup into a high-temperature dyeing machine, raising the temperature to 60-100 DEG C, keeping the temperature for 20-50 minutes until the carrier and the fabric act uniformly, after heat preservation is finished, increasing the temperature to 120-140 DEG C at the speed of 2 DEG C/min, dyeing for 50-80 min, and after dyeing is finished, cooling to 40 DEG C, soaping and drying. According to the method, aramid fiber is dyed by using the cationic dye, and the dye has positive charges, so that the dye mainly exists in a dye bath in an ionic form, but the main combination mode between the dye and the fiber is not an ionic bond, but hydrogen bonds, Van der Waals' force and the like, and the dyeing effect is obvious. Meanwhile, the dyed aramid fiber has good color fastness to rubbing, soaping fastness and better color fastness to sunlight.
Owner:NANTONG UNIVERSITY

A dyeing process of flame-retardant blended fiber

The invention aims to provide a dyeing process of flame-retardant mixed fiber. The dyeing process includes following steps: adding the flame-retardant mixed fiber into a desizing water solution of 50-60 DEG C, holding the temperature, and washing with water at 50-70 DEG C; adding the flame-retardant mixed fiber that is desized into a rinsing water solution of 95-100 DEG C, holding the temperature, and washing with water at 50-70 DEG C; unhairing; adding the flame-retardant mixed fiber that is unhaired into water of 15-35 DEG C, rising the temperature to 100-102 DEG C, adding dye at 68-71 DEG C, adding a dye auxiliary at 95-100 DEG C, and holding the temperature at 100-102 DEG C; rising the temperature to 130-135 DEG C, and holding the temperature at 130-135 DEG C; lowering the temperature to 75-80 DEG C; taking out the flame-retardant mixed fiber, and soaping the flame-retardant mixed fiber at 75-80 DEG C; taking the flame-retardant mixed fiber dyed for the first time, padding the flame-retardant mixed fiber in dye liquid, and air-drying at high temperature; padding the flame-retardant mixed fiber in color fixing liquid, and performing saturated steaming at high temperature; subjecting the flame-retardant mixed fiber after saturated steaming to water washing at 10-15 DEG C, acetic acid neutralizing, soaping at 85-90 DEG C and water washing at 15-35 DEG C sequentially; taking the flame-retardant mixed fiber after being dyed, and subjecting the flame-retardant mixed fiber to air finishing and full decatizing sequentially. The dyeing process has the advantage that dyeing effect is improved.
Owner:HANGZHOU ZHUODA PRINTING & DYEING CO LTD

Silk fiber prepared by modifying plant extracts and preparation method of silk fiber

InactiveCN109811561ALow reduction rate of color fastness to chlorine bleachingHigh oxygen indexPhysical treatmentDyeing processChemistryRoom temperature
The invention provides a silk fiber prepared by modifying plant extracts. According to the silk fiber, the breaking strength is 3.60-3.75 cN / dtex, the elongation at break is 25.6-27.1%, the dye smallspeck rate is less the or equal to 0.001%, the bacteria inhibitive rate against bacillus subtilis is 91.8-92.1%, and the oxygen index after chlorine rinsing for 50 times is 29.0-29.1%. The invention further provides a preparation method of the silk fiber prepared by modifying the plant extracts. The preparation method comprises the steps of pretreatment and secondary treatment of the silk fiber, wherein the pretreatment comprises the steps that ultrasonic cleaning is carried out with deionized water and 1% of dilute hydrochloric acid for 10-15 min, then washing is carried out with ultrapure water, immersing is carried out at room temperature for 10-30 min, temperature is controlled at 25-50 DEG C and standing is carried out for 20-50 h. After the silk fiber is washed for 50 times, the bacteria inhibitive rate against staphylococcus aureus, candida albicans and escherichia coli is almost not reduced; and the flame retardant performance is good, and the oxygen index is reduced little after washing is carried out for 50 times and 100 times.
Owner:ZHONGKE TEXTILE RES INST QINGDAO CO LTD
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