What are the commonly used printing and dyeing auxiliaries?

Printing and dyeing auxiliaries are auxiliaries used in the process of fabric printing and dyeing, which can improve the printing and dyeing effects. They include printing auxiliaries and dyeing auxiliaries. Printing auxiliaries include thickeners, adhesives, crosslinking agents, emulsifiers, dispersants and other printing auxiliaries.

Performance and use of commonly used printing and dyeing auxiliaries

1 HA (sodium hydroxide)

non-ionic surfactant, sulfuric acid compound, with strong penetration.

2 NaOH (caustic soda)

scientific name sodium hydroxide, also known as caustic soda, strong deliquescent, and easy to absorb carbon dioxide in humid air to become soda ash, and can make various animal fibers such as wool, silk, etc. completely dissolved. It is mainly used as a desizing agent and bleaching agent for cotton cloth in printing and dyeing. Caustic soda cannot come into contact with the skin, otherwise it will burn the skin.

3 H2O2 (hydrogen peroxide)

is scientifically known as hydrogen peroxide. Hydrogen peroxide is stable in an acidic environment and easily decomposed in an alkaline environment. Hydrogen peroxide has strong oxidizing properties and is mainly used for fiber bleaching in printing and dyeing. It can burn the skin. The concentration of hydrogen peroxide used in our factory is 50%.

4 NaCLO (bleach) Bleach

is unstable under acidic conditions and must be PH>9 to be stable. Bleach has a bleaching effect on cotton fibers and is mainly used for bleaching and stripping cotton fibers. Bleach is corrosive.

5 GLM (anti-wrinkle agent)

Dye bath anti-wrinkle agent increases the sliding properties of dyed fibers in the dyeing machine and has a lubricating effect, thereby preventing creases. CT (sodium tripolyphosphate) CT can complex Ca2+ (calcium ions) and Mg2+ (magnesium ions) in hard water to soften water. It can disperse dirt and improve the decontamination efficiency. Sodium tripolyphosphate is easily soluble in water, making the aqueous solution weakly alkaline. Its main uses are to disperse and decontaminate during softening water, refining or bleaching. It is in the form of white powder.

6 CH3COOH (HAC) Acetic acid Acetic acid

is a weak acid that can neutralize alkalis. Acetic acid is easily mixed with water. The nature of acetic acid is relatively mild and has almost no effect on brittle damage to cotton fibers. In printing and dyeing projects, its weak acidity and volatility are often used to prepare dyeing liquid and printing paste. Acetic acid has a strong piercing acid taste and is corrosive. It has irritating and burning effects on the skin.

7 Na2CO3 (soda)

The chemical name is sodium carbonate, soda ash. It is easily soluble in water, and its aqueous solution is alkaline. Its main function is to soften water, serve as a scouring agent for colored yarn fabrics, and as a direct material, sulfurized dyeing cotton auxiliary. It can be used for washing oil stains and many other purposes.

8 H2SO4 (sulfuric acid)

Concentrated sulfuric acid has the characteristics of water absorption, dehydration, and strong corrosiveness. Sulfuric acid is widely used in printing and dyeing, and can be used for cleaning, burning cotton, neutralization, and dyeing promotion.

9 NaCL (salt) Sodium chloride

is used as a dye promoter, easily soluble in water, and its aqueous solution is neutral. It is a dye promoter for direct, sulfide, and reduction dyes. It is also used as a slow dyeing agent for acid dyes (such as wool dyeing). Sodium chloride is added to the dyeing solution as an electrolyte.

10 Na2SO4 (sodium sulfate)

The scientific name is sodium sulfate, which is a salt that is easily soluble in water and has a neutral aqueous solution. Sodium sulfate is added to the dyeing solution as an electrolyte to adjust the dye uptake rate of the dye on the fiber.

11 Na3PO4 (trisodium phosphate)

White triangular crystalline particles, easily soluble in water, and the aqueous solution is alkaline. It is mainly used for dyeing and fixing reactive dyes in printing and dyeing.

12 Na2S2O4 (Na2S2O4)

Scientific name: sodium hyposulfite, is a reducing agent with strong reducing ability, easily soluble in water, can capture oxygen in the air, unstable performance, easy to decompose, the most stable acid resistance limit is PH=5 at PH=10, printing and dyeing are mainly used for stripping and bleaching (bleaching wool). Na2S2O4 is flammable, and water cannot be used to put out the fire when it catches fire. The only way is to isolate the Na2S2O4 from the air, because water will only accelerate its decomposition.

13 Reyonet200 (deoxygenation enzyme)

is a hydrogen peroxide neutralizer that can decompose the residual hydrogen peroxide in the solution and on the cloth.

14 Rucolase (ZER) Erosion enzyme

is used to remove hair from cotton fiber cloth, improve the surface quality of cloth, and have a certain effect on the blasting strength of cloth.

15 Heptol (WZB)

Metal chelating agent Chelating agent with dispersing effect, with good chelating ability in the presence of Ca2+, Mg2+ and heavy metal ions.

16 Rewin (HRT) Fixing agent

Cationic fixing agent, can improve the wet and dry fastness of active materials and direct materials on cotton fibers.

17 Solidol (PAI) Fixing agent

for active dyes and direct materials, no color change for direct dyes, can change the color of active dyes. White powder.

18 Aldtex (PON) Leveling agent

, penetrant, and disperse dye dispersant for direct dyes and vat dyes. Dark brown liquid.

19 Remol (SML) Disperse leveling agent

for polyester.

20 Zetex (AR) Disperse dyes

prevent reducing agents (itself an oxidant). When reducing substances are present in the high-temperature dye bath, the dyeing of disperse dyes can be kept unaffected.

21 Dilatin(PON) Dyeing

accelerator and swelling agent for polyester and its blended fabrics.

22 Lyogen(PAM)

Leveling agent for nylon.

23Bevalaid(4052) AL

Dispersing leveling agent for nylon, can also remove floating color or staining on the cloth.

24 Na2SO3 Sodium sulfite

This product is a hydrated crystal. Its main chemical property is that it has a reducing effect and can capture oxygen from other substances. It is often used to boil cotton cloth in printing and dyeing. (Edited by Dyeing Without Borders)

25 Na2s Sodium sulfide

is scientifically known as sulfide. It is easily soluble in water. Its aqueous solution is alkaline. It is mainly used as a solvent for sulfide. Sodium sulfide is highly corrosive to the skin and eyes.

26 Sodium silicate (Na2SiO3)

is also known as sodium silicate. Its aqueous solution is called water glass. It is a colorless, turquoise or brown solid or viscous liquid. Used in the textile industry for dyeing, bleaching and sizing.

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