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Dyeing Auxiliaries .pdf

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HT Fine Chemical Co, Ltd.
Dyeing Auxiliaries
Dyeing auxiliaries are fine chemical products in the textile printing and dyeing industry
applications. Dyeing agent is an important type of textile printing and dyeing
auxiliaries, generally according to the classification of dyes, to name different types of
dyeing agents. Dyeing auxiliaries is mainly included auxiliary for cotton, auxiliaries for
polyester, auxiliaries for wool and nylon, auxiliaries for acrylic etc.
To be specific, dyeing agents include leveling agent, fixing agent, dispersing agent,
fluorescent whitening agent and softener. Textile dyeing auxiliaries are essential to
enhance the value-added and upgrading of textiles, they can also make the textile
more contemporary, functional, and high-grade. To some extend, dyeing auxiliaries
quality affects directly the fabric quality.
HT Fine Chemical thinks that the color difference of reactive dyes of cotton knitted
fabrics is mainly related to dyeing auxiliaries, such as leveling agent, dispersant, anti
creasing agent or fiber protection agent and dyestuffs cosolvent.
Some example chemicals used in textile dyeing:
1. Leveling agent
Light-colored reactive dyes need to use a certain leveling agent to achieve uniform
dyeing, and dark not necessarily to add leveling agent. In the actual production
process, three kinds of dye coloring is often use a dye as the base (the amount of
80%~90%), the other two dyes for auxiliary colors (dosage accounted for 10%~20%).
2. Anti creasing agent or fiber protection agent
Because of the characteristics of the rope-like dyeing of knitted fabrics, it will
inevitably form some wrinkles in the process of pretreatment and dyeing, and add
such dyeing auxiliaries to improve the feel and appearance of the cloth.
3. Dyestuffs cosolvent
Turquoise and other active dyes with larger molecular weight, its dissolution and
dyeing are more difficult, in the dyeing to add the appropriate amount of cosolvent,
dye molecules can be better dissolved in the dye bath, on the other hand, can make
the fiber swelling, in order to facilitate the dye molecules into the internal infiltration of
fiber to achieve uniform dyeing purposes.
HT FINE CHEMICAL is expert in production and exporting all kinds of textile
auxiliaries, and has long time R&D experience and actual operation knowledge
in textile chemistry area.

http://www.htfine-chem.com/ TEL: +86763-5387660

Email: connie@htfine-chem.com

HT Fine Chemical Co, Ltd.

Auxiliaries for Cotton
Cotton dyeing is operated in a certain temperature, time, PH value and the required
dyeing agent for cotton. The common agents for cotton dyeing and printing include
scouring agent, dye fixing agent, penetrating agent and so on. Choosing cotton fabric
dyeing and finishing process is mainly based on the varieties, specifications,
requirements of finished product.
In the process of traditional cotton dyeing and printing, in order to avoid the
interference reaction between the dyeing agent for cotton in the aqueous solution,
dyeing and finishing are generally separated. Nowadays, under the vacuum
conditions, the reaction between components can be effectively avoided by dyeing
agent for cotton, finishing agent or the mixture, and ensure that dyeing and finishing
can be carried out simultaneously, thus simplifying the whole process. In addition,
under the vacuum conditions, the atomized mixture of dyeing agents for cotton absorb
on the fabric, which avoids a lot of pollution, playing an important role for environment.
HT Fine Chemical from China offers eco auxiliaries for cotton fabric. Welcome to

Auxiliaries for Polyester
Auxiliaries for Wool and Nylon
Auxiliaries for Acrylic

Welcom to contact HT FINE CHEMICAL

http://www.htfine-chem.com/ TEL: +86763-5387660

Email: connie@htfine-chem.com

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