News_Hangzhou Genn Textile Chemical Co., LTD

Huntsman is a world-leading supplier of textile dyes and auxiliaries, providing a full range of products for pretreatment, dyeing, printing, and finishing processes. Its auxiliaries are widely used in cellulose fibers, polyester, polyamide, wool, silk, and blended fabrics, with advantages of high efficiency, environmental compliance, stable performance, and compatibility with global standards such as ZDHC, Bluesign, and OEKO‑TEX. This guide systematically introduces the classification, selection principles, application methods, process points, and precautions of Huntsman textile auxiliaries to help dyeing and finishing enterprises achieve stable quality, high fastness, energy saving, and emission reduction.

Classification of Huntsman Textile Auxiliaries

Huntsman auxiliaries cover the entire textile wet processing chain and can be divided into five major categories:

1. Pretreatment Auxiliaries

Including scouring agents, wetting agents, penetrating agents, chelating agents, and peroxide stabilizers. These products are used to remove impurities, oil, and sizing agents, improve fabric wettability, and provide a consistent base for dyeing.

2. Dyeing Auxiliaries

Including leveling agents, retarding agents, dispersing agents, fixing agents, and pH regulators. They ensure uniform dye uptake, avoid barreling, streaking, and dye aggregation, and improve color yield and fastness.

3. Printing Auxiliaries

Including thickeners, emulsifiers, defoamers, and fixation auxiliaries. Suitable for reactive, disperse, and pigment printing systems, providing clear patterns, high color fastness, and good hand feel.

4. Finishing Auxiliaries

Including softeners, hydrophilic agents, wrinkle-resistant resins, water repellents, and antistatic agents. Used to enhance fabric functionality and aesthetic performance.

5. Eco‑friendly and Special Functional Auxiliaries

Including low‑salt, low‑temperature, formaldehyde‑free, and biodegradable products, meeting the requirements of green textiles and sustainable dyeing.

Selection Principles of Huntsman Auxiliaries

Reasonable selection is the premise of stable process and qualified quality. The following factors should be considered:

1. Fiber Type

Cotton, viscose and other cellulose fibers: Choose reactive dyeing auxiliaries, peroxide bleaching stabilizers, and cellulose‑specific fixing agents.

Polyester: Use disperse dye leveling agents, high-temperature dispersing agents, and reduction cleaning auxiliaries.

Nylon / wool / silk: Select acid dye leveling agents, retarding agents, and mild softeners to avoid fiber damage.

Blended fabrics: Use universal auxiliaries with good compatibility to prevent color cross‑staining.

2. Dyeing Process and Equipment

Exhaust dyeing: Focus on leveling agents and dispersing agents to ensure uniformity in long‑run production.

Pad‑batch / pad‑steam: Select high‑penetration, high‑absorption auxiliaries to improve pickup and color consistency.

Continuous pretreatment: Use high‑efficiency scouring agents and stabilizers suitable for high‑speed equipment.

3. Color Fastness Requirements

For high‑fastness products such as sportswear, casual wear, and automotive textiles, select special fixing agents, soaping agents, and functional finishing auxiliaries to improve washing, perspiration, and rubbing fastness.

4. Environmental and Certification Requirements

For export orders, choose Huntsman products that comply with ZDHC MRSL, Bluesign, and OEKO‑TEX Standard 100 to avoid banned substances.

5. Cost and Energy Saving

Select low‑temperature, short‑process auxiliaries to reduce water, electricity, steam consumption, and shorten process time.

Application Methods and Key Process Points

1. Pretreatment Stage

Use chelating agents to prevent calcium and magnesium ions from forming deposits and affecting whiteness.

Apply peroxide stabilizers to control the decomposition rate of hydrogen peroxide, avoid over‑bleaching or fiber strength loss.

Main process parameters: temperature 90–100℃, time 20–40 min, pH 10.5–11.0.

2. Dyeing Stage

Leveling agents: Add before dyes to promote even dispersion and slow down dye uptake, especially suitable for dark colors and sensitive colors.

Dispersing agents: For disperse dyeing of polyester, prevent dye agglomeration under high temperature and reduce streaks.

pH regulators: Maintain stable pH value to ensure consistent color batch to batch.

Typical process: 40–60℃ feeding → heating up at 1–2℃/min → holding at dyeing temperature → cooling → soaping → fixing.

3. After‑Treatment Stage

Soaping agents remove hydrolyzed dyes and surface floating color to improve fastness.

Fixing agents further enhance washing and perspiration fastness, especially for dark red, black, and navy.

Softeners improve hand feel without affecting whiteness or color fastness.

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