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One-bath process of scouring and dyeing cotton fabric with reactive dyes and soap

A technology for reactive dyes and cotton fabrics, applied in the field of dyeing and finishing, can solve the problems of time-consuming sewage treatment, and achieve the effects of overcoming adverse effects, reducing resource consumption, and improving color yield

Active Publication Date: 2021-11-23
JINJIANG CITY LONGSHENG KNITTING PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to change the problems of wasted energy, time, discharge of a large amount of sewage and heavy burden of sewage treatment in the process of scouring oxygen bleaching→dyeing→hot washing→pickling→soaping→water washing, and provide a high-efficiency production , water and energy saving, emission reduction and pollution reduction, and has good color fastness and color reproducibility, a reactive dyeing and soaping one-bath process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • One-bath process of scouring and dyeing cotton fabric with reactive dyes and soap
  • One-bath process of scouring and dyeing cotton fabric with reactive dyes and soap

Examples

Experimental program
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Effect test

Embodiment 1

[0019] This embodiment provides a one-bath process for scouring and dyeing of dark blue cotton fabrics with reactive dyes and soaping. Specifically, the cotton gray cloth to be treated and water are added in the main tank of the normal temperature and pressure dyeing machine, and the bath ratio is 1:10. Then add the low-temperature scouring agent of 2.0g / L, the reactive red LA-BN of 0.9% (o.w.f), the reactive yellow LA-RN of 0.57% (o.w.f), the reactive green LA-DB of 3.3% (o.w.f), 70g / L of anthracite and 2.0g / L soda ash, heated up to 80°C at a heating rate of 1°C / min and kept warm for 35min, scouring and dyeing in the same bath; after dyeing, directly add 2.0g / L without draining Use low-temperature soaping agent for soaping, and heat preservation treatment at 80°C for 20-50 minutes. When the color of the dyeing solution turns light yellow to light brown, it is the end point of soaping. At this time, the pH value of the dyeing solution drops to 3-6; then drain liquid, into col...

Embodiment 2

[0026] The present embodiment provides a kind of one-bath process of scouring and dyeing soaping of dark gray cotton fabric reactive dyes, specifically adding the cotton gray cloth to be treated and water in the main vat of the normal temperature and pressure dyeing machine, the bath ratio is 1:10, and then Add 1.0g / L low-temperature scouring agent, 0.27% (o.w.f) reactive red LA-BN, 0.35% (o.w.f) reactive yellow LA-RN, 0.69% (o.w.f) reactive dark blue LA-GN, 50g / L Soda ash of 1.5g / L and 1.5g / L soda ash are heated up to 85°C at a heating rate of 1.5°C / min and kept warm for 25min, then scouring and dyeing are carried out in the same bath; after dyeing, 0.5g / L of Soaping with low-temperature soaping agent, heat preservation treatment at 85°C for 20-50 minutes, until the color of the dyeing solution turns light yellow to light brown, which is the end point of soaping. At this time, the pH value of the dyeing solution drops to 3-6; then drain 1. Wash once in cold water at room temp...

Embodiment 3

[0030] This embodiment provides a black cotton fabric reactive dyeing and soaping one-bath process. Specifically, the cotton gray cloth to be treated and water are first added to the master vat of a dyeing machine at normal temperature and pressure. The bath ratio is 1:15, and then added 3.0g / L low temperature scouring agent, 0.05% (o.w.f) reactive deep red LA-DB, 0.04% (o.w.f) reactive yellow brown LA-DR, 4.5% (o.w.f) reactive black LA-G, 80g / L Soda ash of 2.0g / L and 2.0g / L soda ash are heated up to 65°C at a heating rate of 1°C / min and kept warm for 50min, then scouring and dyeing are carried out in the same bath; after dyeing, 3.0g / L soda ash is directly added Soaping with low-temperature soaping agent, heat preservation treatment at 65°C for 20-50 minutes, until the color of the dyeing solution turns light yellow to light brown, which is the end point of soaping. At this time, the pH value of the dyeing solution drops to 3-6; then drain 1. Wash once in cold water at room t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a one-bath process for scouring and dyeing cotton fabrics with reactive dyes and soaps. Specifically, low-temperature scouring agents, sodium sulfate and low-alkali reactive dyes are used to scouring and dye cotton fabrics in a dyeing machine at normal temperature and pressure. Add low-temperature soaping agent for soaping, then drain, enter cold water and wash once at room temperature, and then release the cloth; low-temperature scouring agent consists of fatty alcohol polyoxyethylene ether and polyaspartic acid in a weight ratio of 1: (0.3-2) It is prepared by mixing, and the low-temperature soaping agent is prepared by mixing laccase, ammonium acid polymer and active oxygen preparation in a weight ratio of 2:1:1. The whole process of the invention only needs two cylinders of water, and does not involve the secondary steam heating process, reduces resource consumption, reduces costs, and also achieves high-efficiency production, water and energy saving, emission reduction and pollution reduction, and has good dyeing Fastness and color reproducibility.

Description

technical field [0001] The invention relates to the technical field of dyeing and finishing, in particular to a one-bath process of scouring and dyeing cotton fabric with reactive dye soap. Background technique [0002] At present, the dyeing of cotton fabrics is mainly in the way of scouring oxygen bleaching→dyeing→hot washing→acid washing→soap washing→water washing, divided into baths and steps. A lot of water, steam and labor are used in the dyeing process, and each step requires Add dyes and auxiliaries slowly to ensure uniform results in scouring, dyeing and soaping. [0003] Therefore, there are three problems in the process of traditional dyeing of reactive dyes in separate baths and steps: 1. The waste of a lot of energy and time in draining liquid after dyeing. After dyeing, hot water is discharged and cold water is added to heat up, which consumes a lot of energy and indirectly Produce a large amount of carbon dioxide emissions; 2. Refining oxygen bleaching needs ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/613D06P1/52D06P3/66D06P5/02D06P5/08
CPCD06P1/38D06P1/52D06P1/6133D06P1/6735D06P3/66D06P5/02D06P5/08
Inventor 黄燕珠刘志军段亮朱学勋
Owner JINJIANG CITY LONGSHENG KNITTING PRINTING & DYEING CO LTD
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