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Low-temperature scouring and bleaching agent and application thereof

A low-temperature refining and bleaching agent, scouring and bleaching technology, used in bleaching products, textiles and papermaking, dry cleaning fiber products, etc., can solve the problems of environmental protection and high dosage of additives, reduce costs, shorten the treatment process, and reduce sewage treatment costs. Effect

Active Publication Date: 2012-10-03
河北欧凯纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many reports on the low-temperature scouring and bleaching process of the chemical method, but there are still certain problems in use, such as the extremely high amount of additives or environmental protection issues

Method used

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  • Low-temperature scouring and bleaching agent and application thereof
  • Low-temperature scouring and bleaching agent and application thereof
  • Low-temperature scouring and bleaching agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A low-temperature scouring and bleaching agent, which specifically includes the following components: 90g of anhydrous sodium metasilicate (powder, sodium oxide 50.5 ± 1%, Qingdao Jiarun Chemical Co., Ltd.), 360g of pentahydrate sodium metasilicate (granule, oxidized Sodium 28.5~30%, Qingdao Jiarun Chemical Co., Ltd.), sodium percarbonate 135g (granule, active oxygen ≥13%, Henan Hongye Biochemical Co., Ltd.), soda ash 225g (content 99.8%, Weifang Ruidesheng Chemical Co., Ltd. ), caustic soda 18g (content 96%, Zibo Xuhang Chemical), XP-90 36g (isomeric C10 ethoxylate, BASF), S-60 36g (sorbitan fatty acid ester, Jiangsu Haian Petrochemical ), dicyandiamide 100g (content ≥ 98%, Henan Yuxiang Chemical);

[0035] Its preparation process is as follows: after mixing various raw materials according to the above formula, fully stirring, and then packing, moisture-proof should be paid attention to during packing and storage.

Embodiment 2

[0037]The low-temperature, low-alkali and short-process pretreatment process for cotton and its blended fabrics is suitable for conventional knitted fabrics. The steps include:

[0038] A. Scouring and bleaching: Cotton and its blended fabric gray cloth are scoured and bleached for 60 minutes in 80° C. boiling and bleaching working solution; wherein, the formula of the boiling and bleaching working solution is: the low-temperature scouring and bleaching agent 2.0 g / L of Example 1, NaOH 1 g / L, H with a volume fraction of 30% 2 o 2 6g / L, the rest is water;

[0039] B. Cold washing and drying: the product obtained in the previous step can be washed with cold water and dried.

Embodiment 3

[0041] The low-temperature, low-alkali and short-process pretreatment process for cotton and its blended fabrics is suitable for light and thin plain and corduroy conventional knitted fabrics. The steps include:

[0042] A. Low-temperature stacking: Cotton and its blended fabric gray cloths are soaked in the boiling and bleaching working solution, the excess rate is 110%, and they are stacked at 40°C for 10h to 12h; wherein, the formula of the boiling and bleaching working solution is: the low-temperature bleaching solution in Example 1 Scouring and bleaching agent 20g / L, volume fraction of 30% H 2 o 2 12g / L~13g / L, low temperature scouring agent 6g / L~8g / L, and the rest is water; among them, the low temperature scouring agent specifically contains the following ingredients: Diacid X 25% (fatty acid derivatives, Shanghai Suokai Industrial Co., Ltd.), TO-7 15% (isomeric alcohol, Zhejiang Chuanhua Import and Export Co., Ltd.), XP-90 5% (isomeric alcohol, Jinchang Chemical Co., L...

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Abstract

The invention discloses a low-temperature scouring and bleaching agent and application thereof in pretreatment process of cotton and a cotton blended fabric. The low-temperature scouring and bleaching agent comprises the following compositions in part by weight: 85-95 parts of anhydrous sodium metasilicate, 340-380 parts of sodium metasilicate pentahydrate, 215-235 parts of soda ash, 16-20 parts of caustic soda, 34-38 parts of heterogeneous C10 ethyoxyl compound, 34-38 parts of sorbitan fatty acid ester and 90-110 parts of dicyandiamide. When the low-temperature scouring and bleaching agent is applied in the pretreatment process of the cotton and the cotton blended fabric, the traditional high-temperature high-alkali cooking and bleaching process is improved into a low-temperature less-alkali combined cooking and bleaching short flow process, so the low-temperature scouring and bleaching agent is economic and environment-friendly, and has excellent effect on the pretreatment of the cotton and the cotton blended fabric.

Description

technical field [0001] The invention relates to the pretreatment process of desizing, scouring and bleaching of cotton and its blended fabrics. Background technique [0002] In recent years, in the consumption structure of textile printing and dyeing auxiliaries in the Western European market, if calculated according to the auxiliaries used in pretreatment, printing and finishing, etc., pretreatment auxiliaries accounted for 9.3%, printing and dyeing auxiliaries accounted for 38.7%, and finishing agents accounted for 52.0%. ; In the consumption structure of textile printing and dyeing auxiliaries in my country, only pre-treatment, printing and dyeing and finishing auxiliaries are roughly counted. Pre-treatment agents account for about 18.4%, printing and dyeing auxiliaries account for about 46.7%, and finishing agents only account for about 34.9%. . In particular, the energy consumption, water consumption and pollutant discharge of pre-treatment in my country account for a re...

Claims

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Application Information

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IPC IPC(8): D06L3/02D06L1/12D06L1/14D06L4/12D06L4/13
Inventor 刘瑞宁冯继学曹军平
Owner 河北欧凯纺织科技有限公司
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