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HT Fine Chemical Co., Ltd
Contact us

+86-13729660270 +86-763-5822257 connie@htfine-chem.com

Fixing Agent
Fixing agent 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.

Fixing Agent


Fixing agent 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.

Sulfur Dye Fixing Agent HTLG26



[Application ]



Before fixing, please bleaching the fabric fully in order to remove the dye, salt
and alkali and that ensure fixing effect for next process.



-- Dipping



Fixing agent: 1-6%O.W.F



Bath radio: 1:15-20



[Brief information ]



Sulfur dye fixing agent is a formaldehyde-free fixing agent, mainly used in posttreatment of vulcanized dye fabrics and obviously all fabrics’ fastness.



[Main composition]



--Polycation polyamine compounds.



[General properties ]



Temperature & Time: 30-50℃*15-20min



-- Appearance: Colorless to pale liquid





-- Ionicity: Cationic

Dyed fabrics → dip in fixing agent at 30-50℃ for15-30mins → washing →
drying.



-- Solubility: Easily soluble in water



-- Padding:



-- Stability: Resist to acid, alkali, hard water and electrolyte.



Fixing agent: 10-60g/L



[Properties and fields of application ]





--Few discoloration and avoid the stripping effectively.

Leuco vat padding process → drafty oxidation → cracking agent
neutralization → washing → fixing agent → dye → dry by steam.



--Obviously improve fabrics’ fastness of friction, soaping, and perspiration after
treatment.



-- Free of formaldehyde and complies to environmental protect requirement.

Fixing Agent Y
This product is mainly used in direct, acid soluble dyes printing or all kinds of dyeing fabric, with fixing agent after treatment can improve the soap
wash, wash, sweat stain, water immersion, friction fastness properties, but also can be used for silk, wool cotton fabric and other fiber fixation. In
addition fair use get worked up lake manufacturing and paper dyeing of smooth, etc.
[Main composition] Dicyandiamide formaldehyde resin water-soluble initial shrinkage body.
[General properties]
Appearance: colorless transparent liquid
Iconicity:

cation

P H value:
Solubility:

3.5 ~ 5.5
soluble in water

[Product features]
1. Dissolvability: easily dissolving in cold water, aqueous solution for clarification.
2. Mix ability: Can mix use with nonionic, cationic surfactant or cationic synthetic resin initial shrinkage body, could not mix with anionic dye, surface
active agent combination.
3. Stability: meet hard water, strong acid, strong alkali, tannin, rongalite, sulfate can produce precipitation, encounter iron, copper and other metal ions
have influence on the color fastness dyeing.
[Application]
in solid color processing before, please send the dyed fabric full rinse (when the need for soaping), remove residual dye, salt and alkali, to ensure that
subsequent solid color effect.
General suggested usage: 0.5-4% (O.W.F).
[Packaging and storage]
125 kg/polyethylene drum, 12 months in sealed container at room temperature.

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

Package & Delivery
According to customer's requirement, we can provide different
packages. Sush as 50kg, 125kg or 200kg for liquid.

THANKS FOR WATCHING
Contact us
+86-13729660270 +86-763-5822257
connie@htfine-chem.com
Website: http://www.htfine-chem.com/


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