HT Fine Chemical Co., Ltd.
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Application of Low Temperature Soaping Agent in Textiles

Application of Low Temperature Soaping Agent in Textiles

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(1): Product introduction

The traditional soaping process of reactive dyed fabrics is basically soaped at 95℃, and it has to be washed many times to meet the customer's demand for fabric fastness, which not only costs a lot of energy but also aggravates the pollution of water. Therefore, the low temperaturesoaping agentis a trend of the development of the soaping agent. All walks of life in the world are advocating energy saving and emission reduction. As one of the energy consuming giants, "energy saving and emission reduction" is also the only way which must be passed. It is also a long-term development goal.

Thesoaping agentshould wash away the auxiliaries, especially the unfixed dyes (often called floating colors). The low temperature soaping agent DZ208 is different from the traditional soaping agent. The low temperature soaping agent can soaping at 60~65 degree. The temperature can reduce the 20~30 degree, and it not only save the electricity consumption, but also save time, labor and water consumption. This will save energy and cost for the company.

1. The physical index of this product:

The low temperature soaping agent DZ208 is a white powdery solid, and soluble in water.

2. The features of this product:

It can be used for soaping after dyeing of cellulose fiber and its blended fabric, so that the fabric has good soaping fastness. And it has no bubble, high fastness, high efficiency. And it can wash in low temperature, save time, water, and energy, and reduct emission, protect environmentl, and it does not contain APEO.

3. Suitable types:

It is suitable for soaping after the dyeing of cellulose and its blended fabrics.

4. Production equipment:

High temperature overflow stain, and atmospheric dyeing machines.

5. Production process:

5-1 Technological Formula

Dye Component % 6-8 4-6 2-4 1-2 Below 1
LowTemperatureSoapingAgent 1.5 1.2 1.0 0.8 0.5

5-2 Technological process

Dipping method: dyeing→washing→acid neutralization→low temperature soaping agent DZ208 (65℃, time: 20min)→washing in hot water→washing.



(2): The effect of low temperature soaping agent DZ208

1. The effect of different dosage of low temperature soaping agent on soaping.

In pure cotton red knitted fabric and black knitted fabric, the different dosage of low temperature soaping agent DZ208 was used for 20 minutes at 65℃ and used for 20 minutes at 80℃. After drying, the soaping fastness was compared. After drying, we can compare the firm degree of soaping.

Dosage: g/L 0 0.5 1 1.5
Red 65℃ 1 3 3-4 3-4
80℃ 1-2 3-4 3-4 3-4
Black 65℃ 1 3 3-4 3-4
80℃ 1-2 3-4 3-4 3-4

From the above table, we can know that with the increase of the dosage of low-temperature soaping agent DZ208, soaping fastness gradually improved, and when the dosage of DZ208 is 1 g/L, it is the best.

2. Comparison of soaping effect between the low temperature soaping agent and the conventional high temperature soaping agent.

Comparison between the fastness of low temperature soaping agent DZ208 which used for 20 minutes at 65℃ and used for 20 minutes at 80℃ and that of the conventional high temperature soaping agent which used for 95 minutes at 20℃.

Test Red Black
Temperature 65℃ 80℃ 95℃ 65℃ 80℃ 95℃
Test Auxiliaries DZ208 DZ208 Conventional Soaping Agent DZ208 DZ208 Conventional Soaping Agent
Dosage(g/L) 1.0 1.0 0.5 1.0 1.0 0.5
Cotton Stain 3-4 3-4 3-4 3-4 3-4 3-4

It can be seen from the table that when the low temperature soaping agent DZ208 is soaping at 65℃ for 20 minutes after dyeing and its dosage is 1.0g/L, its soaping fastness can reach the level of conventional high temperature soaping agent. And it has no effect on the colour yield and coloured light.

(3): Conclusion

1. This product is suitable for the temperature between 60℃ and 65℃ to achieve soaping dyeing temperature, good color retention and cylinder effect, and it can improve the one-off success rate.

2. It greatly saves energy, manpower costs and time, improves production efficiency, and keeps the strength of yarn or cloth.

3. Using low temperature soaping agent DZ208 can reduce the dosage of steam, save time, and greatly improve the utilization rate of single equipment and production efficiency of unit workers, and greatly improve production capacity.

4. The products have good soaping fastness and dry-wet crockfastness. It has little effect on color and light. If you buy our company's high fastness promoter to match it, it will have a very good cost performance.
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