Fixing Agent
Fixing agent textile is one of the important textile auxiliaries in dyeing and printing industry, which can improve the color fastness of dye in fabric. On the fabric, it can form insoluble colored material with dye, thus to improve the color of washing, perspiration fastness, and sometimes can improve its sun fastness.
In recent years, with the development of science and technology, dyeing and finishing technology has also been significantly improved. Due to the expansion of international textile trade and the improvement of people's living standards and environmental awareness, it's more required of textiles comfort, clean and safety. Since the 1970s, Germany first launched the "Blue Angel" plan, the world's developed countries (Japan, the United States, etc.) have passed and implemented the related laws, regulations, and rules for the various indicators of textiles. Green textiles require that in the printing and dyeing process prohibit the use of carcinogenic, teratogenic, poor biodegradability of poor and some aromatic amine intermediates banned in the regulations. At the same time, the use of additives not contain heavy metal ions and not producing free formaldehyde is also required, which means the use of "green auxiliaries”.
Classification
The commonly used color fixing agent for dyeing and printing in textile has cationic fixing agent, such as Cetylpyridinium Chloride, Cetylpyridinium Bromide; fixing agent Y; polyamine contraction (silk fixing agent la); crosslinking fixing agent; non formaldehyde dye fixing agent, and phenolic sulfonate formaldehyde condensate used for nylon (polyamide) fabrics instead of tannin as fixing agents.
Preparation
Take the fixing agent y as an example: After adding the quantitative double cyanide amine to the atmospheric pressure reaction kettle to dissolve, in order to quantify the formaldehyde solution in the constant agitation slowly drops into the reactor, finally uses the ammonium chloride neutralization, produces the certain solid quantity transparent viscous liquid to be the finished product. This method produces the formaldehyde fixing agent, the solid color effect is good but there is free formaldehyde pollution problem, which is now banned in many products.
Non formaldehyde dye fixing agent example: two ethylene amine or trichloroethylene four amine aqueous solution added to the reaction kettle to stir, with quantitative epoxy chloride propane, insulation reflux stirring until the production of a light yellow transparent viscous liquid, which is the final product.
In recent years, with the development of science and technology, dyeing and finishing technology has also been significantly improved. Due to the expansion of international textile trade and the improvement of people's living standards and environmental awareness, it's more required of textiles comfort, clean and safety. Since the 1970s, Germany first launched the "Blue Angel" plan, the world's developed countries (Japan, the United States, etc.) have passed and implemented the related laws, regulations, and rules for the various indicators of textiles. Green textiles require that in the printing and dyeing process prohibit the use of carcinogenic, teratogenic, poor biodegradability of poor and some aromatic amine intermediates banned in the regulations. At the same time, the use of additives not contain heavy metal ions and not producing free formaldehyde is also required, which means the use of "green auxiliaries”.
Classification
The commonly used color fixing agent for dyeing and printing in textile has cationic fixing agent, such as Cetylpyridinium Chloride, Cetylpyridinium Bromide; fixing agent Y; polyamine contraction (silk fixing agent la); crosslinking fixing agent; non formaldehyde dye fixing agent, and phenolic sulfonate formaldehyde condensate used for nylon (polyamide) fabrics instead of tannin as fixing agents.
Preparation
Take the fixing agent y as an example: After adding the quantitative double cyanide amine to the atmospheric pressure reaction kettle to dissolve, in order to quantify the formaldehyde solution in the constant agitation slowly drops into the reactor, finally uses the ammonium chloride neutralization, produces the certain solid quantity transparent viscous liquid to be the finished product. This method produces the formaldehyde fixing agent, the solid color effect is good but there is free formaldehyde pollution problem, which is now banned in many products.
Non formaldehyde dye fixing agent example: two ethylene amine or trichloroethylene four amine aqueous solution added to the reaction kettle to stir, with quantitative epoxy chloride propane, insulation reflux stirring until the production of a light yellow transparent viscous liquid, which is the final product.
Fixing Agent for Polyester DG-1
To prevent the dyeing fabric deformation, most synthetic fiber before dyeing should prior to finalize the design (temperature 193 ℃ ~ 200 ℃). But because of the oxygen in air under the light catalysis, with fabric of disperse dyes in polyester fiber and additives occur yellowing,discoloration; Or cause disperse dye in under the action of heat sublimation color shallow, we called sublimation fastness decline collectively referred to as thermal migration fastness decline. This phenomenon is the nearly twenty years textile widely used contains large number of non-ionic surfactant amino silicone oil micro emulsion type softener caused. The solution is to switch to a Special heat sublimation fastness ascending agent (Polyester fixing agent), used to finalize the design can prevent finalize the design before the disperse dye sublimation prison descend.
[Main composition] Polycation compound
[General properties]
Appearance: light yellow liquid
pH: 5-7.5
Ionicity: Cation
Solubility: easily soluble in water
Stability: stable to acid and alkali
[Product features]
1.Note: this product is high concentrated state choose open diluted multiples of: 2-3 times.
2.Outstanding features: used to disperse dye which can improve the sublimation fastness effectively;
3.Can improve the fastness to washing, less effect of Fabric color.
[Application]
1. Padding process: this article 2 ~ 3% (O.W.F), drying, finalize the design.
2. Impregnation process: 10 ~ 40 g/L.
Fixing Powder for Acid Dyes NRS
[Main composition] Sulphonate condensation polymer.
[General properties]
Appearance: power
pH: 7-9
Solubility: easily soluble in water
Stability: stable to alkali, electrolytes, hard water and weak acid
[Product features]
1.Sharply improves soaping and perspiration fastness of fabrics after treatment.
2.Available in same bath of dyeing and fixing that shortens process.
3.Negligible influence on shades and hand feels.
4.Efficiently prevents white substrate staining.
5.Concentrated products that can dilute to 3-5 times.
[Application]
High concentration product and can be diluted 3-5 times.
Dye fixing of fabrics with acid/metal complex dyestuffs.
Pale shades: 1-2% (O.W.F)
Medium shades: 2-3% (O.W.F)
Deep shades: 3-4% (O.W.F)
Bath ratio: 1: 15-20
pH: 4-6
Temperature & time: 80℃× 20 min
Procedure:
Dyed fabrics → Add diluted HT-NRS and adjust pH to 4-6 with acetic acid → Heat to 80℃ and retain 20 min → Drain and rinse → Dry
[Packaging and storage]
125 kg/ polyethylene drum, 6 months in sealed container at room temperature.
[Notes]
The data contained in this literature are based on our current knowledge and experience. It is imperative that it be tested to determine, to your satisfaction, whether it is suitable for your intended use and application. We shall not take any responsibility in any situation for improper use. .
[Sample supply]
If you need samples for testing, please feel free to contact us, we will recommend suitable products according to your requirement.
[Quotation]
According to your order quantity, we can supply FOB, CIF, EXW price.
The correct method using fixing agents
Non-formaldehyde fixing agent property is evaluated according to the fixing result of dyed fabric: Dyeing and sampling→ fixing → the evaluation on the fixing agent: ①color changes in hue ②Wet fastness ③soap washing fastness ④perspiration fastness. ⑤crock-fastness ⑥chlorine fastness ⑦wet iron fastness ⑧light fastness ⑨ the influence of storage on the activated dyeing color fastness-quick test (Cribbage methods)
1. Dyeing and sampling: dye:2%(o.w.f) (commonly choose red, black and orchid); fabric : preliminary treated woven plain. Dyeing agent is according to the dyeing and sampling method. If it is applicable test in the factory, we can choose fabric with the lower fastness in the workshop.
2. Fixing: fixation process: fixing agent: 2%-4%(o.w.f) bath ratio:1:20, temperature:
40℃～60℃(according to the actual conditions in the fabric or the suggested using index of fixing agent); time: 20min; PH value: some fixing agent need correct PH value to ensure the best fixing result and lowest colored light; Operation: immersed the dyed and washed fabric into the fixing liquid. And keep it 20 min and take out, drying in oven and for test.
3. The fixation result evaluation
①the color change in hue: compare the in-fixing fabrics and the dyeing-fixing agent with the Grey scale color assessment card and grade. And keep fixing fabric as standard, and note the tonal change. Usually n the dyeing plant, the experimental sampling workers look according to his experience and check the color change. We also can use a computer color matching color measurement, using dyed fabrics as the prototype, fixing color fabric as spline, and measure the glossiness change of solid color fabric.
② water fastness: test the fabric color fastness according to the following method.Take a piece of 250 px x 100 px dyed fabric, stitching a piece of the same standard of white cloth on the front area, immersed into 50ml distilled water, Keep (30±5)℃，6 hours later,take out and squeeze to drive out the water. Separate the sample and the white cloth, and dry in room temperature or below 60℃. And test the white cloth’s color fading grade and color staining grade using color fading and change sample card and Grey scale for staining.Please check the gb/t 5713—1997 “the color fastness test and color fastness to water test of fabric”Colorfastness to Water standard. This method is as follows: wet the sample and white cloth using distilled water, clamp between syg 631 and perspiration fastness tester,bearing
12.5pa pressure, move the superfluous water, and put the compound sample into the incubator（37±2）℃ for 4hours
1. Dyeing and sampling: dye:2%(o.w.f) (commonly choose red, black and orchid); fabric : preliminary treated woven plain. Dyeing agent is according to the dyeing and sampling method. If it is applicable test in the factory, we can choose fabric with the lower fastness in the workshop.
2. Fixing: fixation process: fixing agent: 2%-4%(o.w.f) bath ratio:1:20, temperature:
40℃～60℃(according to the actual conditions in the fabric or the suggested using index of fixing agent); time: 20min; PH value: some fixing agent need correct PH value to ensure the best fixing result and lowest colored light; Operation: immersed the dyed and washed fabric into the fixing liquid. And keep it 20 min and take out, drying in oven and for test.
3. The fixation result evaluation
①the color change in hue: compare the in-fixing fabrics and the dyeing-fixing agent with the Grey scale color assessment card and grade. And keep fixing fabric as standard, and note the tonal change. Usually n the dyeing plant, the experimental sampling workers look according to his experience and check the color change. We also can use a computer color matching color measurement, using dyed fabrics as the prototype, fixing color fabric as spline, and measure the glossiness change of solid color fabric.
② water fastness: test the fabric color fastness according to the following method.Take a piece of 250 px x 100 px dyed fabric, stitching a piece of the same standard of white cloth on the front area, immersed into 50ml distilled water, Keep (30±5)℃，6 hours later,take out and squeeze to drive out the water. Separate the sample and the white cloth, and dry in room temperature or below 60℃. And test the white cloth’s color fading grade and color staining grade using color fading and change sample card and Grey scale for staining.Please check the gb/t 5713—1997 “the color fastness test and color fastness to water test of fabric”Colorfastness to Water standard. This method is as follows: wet the sample and white cloth using distilled water, clamp between syg 631 and perspiration fastness tester,bearing
12.5pa pressure, move the superfluous water, and put the compound sample into the incubator（37±2）℃ for 4hours
③ Soaping agent fastness: test the fabric color fastness according to the following method, and compare the coefficient before and after the fastness: Take a piece of 250 px x 100 px dyed fabric, stitching a piece of the same standard white cloth on the front area, immersed into a 250ml beaker of 4g/l soap flake and 2g/lsodium carbonate solution, and then put it into 60℃ water bath. And stirring a little bit.and make it wet. And keep 30 min(stirring vigorous at 10min , stirring 30 times every time)
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