Solid tasteless odorless acid agent for textile dyeing and finishing process

An organic acid and textile technology, applied in textiles and papermaking, dyeing, fiber treatment, etc., can solve problems such as inconvenient transportation, unclean cleaning, safety issues, etc., save storage space and transportation costs, and facilitate transportation and use , the effect of favorable environmental protection

Inactive Publication Date: 2008-11-12
杭州下沙恒升化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This situation will make the dry cloth yellow and reduce the effect of fluorescent whitening during storage, and will affect the shade of acid-base sensitive dyes after dyeing
[0008] 3. After neutralization, it is difficult to clean the residue of acetic acid. After adding acid, it must go through more than 3 cleanings.
[0009] 4. After neutralization, the cleaning is not clean. Because acetic acid has a pungent smell, it will cause peculiar smell before spinning and affect sales. Especially export textiles must not have peculiar smell
[0010] 5. If the acid does not have enough time to act on the inside of the cellulose, it cannot be completely neutralized. The resulting salt (sodium acetate) and acetic acid form a buffer on the outside of the fiber (sodium acetate-acetic acid buffer system), making it harder to penetrate the inside of the fiber. , but incomplete neutralization
[0011] 6. Acetic acid is flammable
[0012] 7. Acetic acid is a liquid, and it is a corrosive liquid and a dangerous article. It is inconvenient to transport, and it is easy to touch the human skin during use, causing safety problems. Its pungent smell is also irritating to the human respiratory tract.
[0014] 9. Acetic acid freezes at 16°C, which is inconvenient to use

Method used

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  • Solid tasteless odorless acid agent for textile dyeing and finishing process
  • Solid tasteless odorless acid agent for textile dyeing and finishing process
  • Solid tasteless odorless acid agent for textile dyeing and finishing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0057] Preparation of solid odorless organic acid agent: each component and its dosage in the formula in the following table 1, add the double helix powder mixer in turn during preparation, add the materials, stir and mix for 40 minutes, and then discharge evenly.

[0058] Different embodiments of table 1 and comparison example with acetic acid intensity

[0059]

[0060]

[0061] Note: Compared with the strength of acetic acid, the experimental method:

[0062] 1) Weigh 10ml of odorless solid organic acid and 10ml of acetic acid into two clean beakers, add 90ml of distilled water respectively, mix well, and draw 10ml of the solution in the above beakers into two Erlenmeyer flasks respectively.

[0063] 2) Add 100ml of distilled water and 1ml of bromophenol blue to each Erlenmeyer flask as indicators, and then titrate with 4% NaOH solution to the end point.

[0064] 3) Do parallel experiments five times and take the average value

[0065] As can be seen from Table 1, the...

Embodiment 7

[0067] Embodiment 7 application test

[0068] The effectiveness of the solid odorless organic acid of the present invention compared to acetic acid is illustrated using post-bleach neutralization tests.

[0069] experimental method:

[0070] 1) Fabric: 32-count pure cotton knitted fabric

[0071] Bleaching process formula: 30% H 2 o 2 5.0ml / l

[0072] 40% NaOH 2.0ml / l

[0073] 100% scouring agent LFD (Koning Germany) 0.35g / l

[0074] Organic Complexing Agent 540 (Germany Corning Company) 0.35g / l

[0075] Conditions: bath ratio 1:15, bleaching at 95°C for 45 minutes

[0076] 2) Wash the fabric in water at 40°C for 4 minutes after bleaching, neutralize the organic acid agent (20% chemical conversion) and 20% acetic acid to pH=7 (five times in parallel, average value) obtained from Examples 1 to 6 respectively

[0077] 3) Consumption of neutralizing acid agent (ml) is shown in Table 2:

[0078] Table 2 Application effect comp...

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PUM

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Abstract

The invention relates to a solid and scentless organic acid agent that is used for the processing of fabric dyeing and finishing and consists of the following ingredients by weight percentage: 50 to 60 percent of C4-C6 carbene acid, 8 to 15 percent of chelate acid, 10 to 12 percent of hydroxycarboxylic acid and 20 to 25 percent of sulfamic acid. Compared with the existing applied acetic acid, the scentless organic acid agent of the invention is solid, thus having convenient transportation and use; the scentless organic acid agent has quicker reaction, better permeable fiber and more thorough neutralization effect; the dosage of the scentless organic acid agent is half to one third of the dosage of the acetic acid, thus saving storage space, transportation cost and application cost.

Description

(1) Technical field [0001] The present invention relates to an auxiliary agent composition used in textile dyeing and finishing, in particular to a solid odorless organic acid composition used in textile dyeing and finishing and replacing acetic acid. Adjust the pH value and neutralize the benefits of alkaline agents. (2) Background technology [0002] In the textile dyeing and finishing process, almost every process has the requirement of pH adjustment or neutralization, and considering the safety of textiles and the change of shade, inorganic acids such as sulfuric acid and hydrochloric acid cannot be used. The traditional method is Use acetic acid. [0003] Textile dyeing and finishing is mainly divided into four parts: scouring and bleaching, dyeing, printing and finishing. Such as the scouring and bleaching of cotton fabrics, sodium hydroxide and other substances are used, which must be neutralized with acetic acid after the process is completed; when dyeing, dyes suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/438D06M13/447D06P1/44
Inventor 夏建明陈晓玉万光凤李信
Owner 杭州下沙恒升化工有限公司
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