Low-temperature cleaning agent and application thereof in polyester knitted fabric post-dyeing washing process

A cleaning agent, a technology for knitted fabrics, applied in detergent compositions, surface active detergent compositions, dyeing methods, etc., can solve the problems of large safety hazards, large water consumption and high cost of hydrosulfites, and avoid hot washing. Steps, reduce COD value, eliminate the effect of burning in water

Inactive Publication Date: 2020-10-09
石狮市瑞鹰纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method takes a long time, high cost, large water consumption, high COD of the residual liquid, and great safety hazards of hydrosulfite

Method used

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  • Low-temperature cleaning agent and application thereof in polyester knitted fabric post-dyeing washing process
  • Low-temperature cleaning agent and application thereof in polyester knitted fabric post-dyeing washing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This embodiment provides a low-temperature cleaning agent prepared by adding fatty alcohol polyoxyethylene ether and polyoxyethylene alkyl aryl ether in a mass ratio of 1:1 and adding an appropriate amount of deionized water.

[0017] In this embodiment, the above-mentioned low-temperature cleaning agent is used to wash the 32s polyester staple fiber single jersey with bright red after dyeing with water. The specific steps are:

[0018] Step a), cleaning with low-temperature cleaning agent: Drainage after dyeing, water intake, bath ratio 1:10, add 3.0g / L of the low-temperature cleaning agent, adjust the pH value of the cleaning solution to 12.9 with 1g / L caustic soda, and then raise the temperature to 70°C and keep it warm for 20 minutes, then drain;

[0019] Step b), one-time water washing: enter water, wash with water at room temperature for 10 minutes, and then drain;

[0020] Step c), pickling: enter water, add 1.5g / L glacial acetic acid, heat up to 60°C and keep i...

Embodiment 2

[0023] This example provides a low-temperature cleaning agent prepared by adding fatty alcohol polyoxyethylene ether and polyoxyethylene alkyl aryl ether in a mass ratio of 3:2 and adding an appropriate amount of deionized water.

[0024] In this embodiment, the above-mentioned low-temperature cleaning agent is used to wash the 32s polyester staple fiber jersey with water after black dyeing. The specific steps are:

[0025] Step a), cleaning with low-temperature cleaning agent: Drainage after dyeing, water intake, bath ratio 1:12, add 3.0g / L of the low-temperature cleaning agent, adjust the pH value of the cleaning solution to 12.9 with 1g / L caustic soda, and then raise the temperature to 70°C and keep it warm for 20 minutes, then drain;

[0026] Step b), one-time water washing: enter water, wash with water at room temperature for 10 minutes, and then drain;

[0027] Step c), pickling: enter water, add 1.5g / L glacial acetic acid, heat up to 60°C and keep it running for 10min,...

Embodiment 3

[0030] This embodiment provides a low-temperature cleaning agent prepared by adding fatty alcohol polyoxyethylene ether and polyoxyethylene alkyl aryl ether in a mass ratio of 1:1 and adding an appropriate amount of deionized water.

[0031] In this embodiment, the above-mentioned low-temperature cleaning agent is used to wash the 32s polyester staple fiber jersey with fluorescent orange after dyeing with water. The specific steps are:

[0032] Step a), cleaning with low-temperature cleaning agent: Drainage after dyeing, water inflow, bath ratio 1:15, add 3.0g / L of the low-temperature cleaning agent, adjust the pH value of the cleaning solution to 12.9 with 1g / L caustic soda, and then raise the temperature to 70°C and keep it warm for 20 minutes, then drain;

[0033] Step b), one-time water washing: enter water, wash with water at room temperature for 10 minutes, and then drain;

[0034] Step c), pickling: enter water, add 1.5g / L glacial acetic acid, heat up to 60°C and keep ...

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Abstract

The invention relates to the technical field of polyester fabric dyeing and finishing and discloses a low-temperature cleaning agent and application thereof in a polyester knitted fabric post-dyeing washing process. The low-temperature cleaning agent is prepared by using fatty alcohol-polyoxyethylene ether and polyoxyethylene alkyl aryl ether according to a mass ratio of (0.5-3): 1 with a proper amount of deionized water added; when the low-temperature cleaning agent is used, the concentration of the low-temperature cleaning agent is 0.5-4.0 g / L, the cleaning time is 5-60 min, the cleaning temperature is 50-90 DEG C, and the pH value of the cleaning liquid is adjusted to 8 or above. The low-temperature cleaning agent disclosed by the invention is suitable for low-temperature cleaning of polyester knitted fabrics under an alkaline condition; unfixed dyes on the surface of fibers can be efficiently removed; undyed dyes are suspended in the aqueous solution; the low-temperature cleaning agent is an odorless environmental protection safety type cleaning agent, and can replace traditional reduction cleaning sodium hydrosulfite, eliminate the potential safety hazards of water-based combustion, flying and irritating odor of the sodium hydrosulfite, achieve the considerable color fastness and significantly reduce the COD value of the residual liquid.

Description

technical field [0001] The invention belongs to the technical field of polyester fabric dyeing and finishing, and in particular relates to a low-temperature cleaning agent and its application in the washing process of polyester knitted fabric after dyeing. Background technique [0002] For post-dyeing treatment of dark colors in polyester knitted fabrics, most dyeing factories currently use hydrosulfite / caustic soda for reduction cleaning. The process of this method is time-consuming, high in cost, large in water consumption, high in COD of the raffinate, and great potential safety hazards of hydrosulfite. For this reason, it is necessary to develop a new type of environmentally friendly, energy-saving and safe low-temperature cleaning agent to replace hydrosulfite. Contents of the invention [0003] The purpose of the present invention is to provide a washing process of polyester knitted fabric after dyeing and its low-temperature cleaning agent, which replaces tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/825D06P5/02D06P5/08
CPCC11D1/72C11D1/825D06P5/02D06P5/08
Inventor 雷梅根夏继平夏鑫强
Owner 石狮市瑞鹰纺织科技有限公司
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