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Quick-reaction-type dyeing method suitable for silk

A technology of rapid reaction and dyeing method, applied in dyeing method, textile and papermaking, etc., can solve the problems such as the inability to meet the efficient and fast actual production requirements of dyeing and finishing enterprises, the unsatisfactory wet rubbing fastness of silk fibers, and the long reaction time, etc. Achieve the effect of improving wet fastness, excellent wet fastness and dyeing effect

Active Publication Date: 2019-12-20
浙江理工大学上虞工业技术研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the reaction temperature of this dyeing method is close to room temperature and the energy consumption is low, due to the long reaction time, it cannot meet the efficient and fast actual production requirements of dyeing and finishing enterprises.
And there is also the defect that the wet rubbing fastness of silk fiber is not ideal enough

Method used

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  • Quick-reaction-type dyeing method suitable for silk
  • Quick-reaction-type dyeing method suitable for silk
  • Quick-reaction-type dyeing method suitable for silk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, a kind of rapid reactive dyeing method that is applicable to silk, selects the dyestuff that contains primary aromatic amine group as brown dyestuff, and its structural formula is as follows:

[0030]

[0031] Formaldehyde is specifically selected as the aldehyde substance.

[0032] The coloring method is as follows:

[0033] Add the dyestuff of 30g (0.0822mol) and the formaldehyde of 1.644mol in 1000g mulberry silk fabric; The dye bath ratio is 1:50; It is a conventional technique), placed in a dye vat, and dyed according to the dyeing process, the dyeing temperature is 90°C, and the holding time is 40min.

[0034] After dyeing, it is then washed with deionized water at 60°C and 15°C to remove impurities adsorbed on the silk (just wash the floating color of the dye and formaldehyde from the silk), and then dry it in the air (air to constant weight at room temperature) .

[0035] Record dyestuff (water soluble) maximum absorption wavelength to be 480...

Embodiment 2

[0036] Embodiment 2, a kind of rapid reactive dyeing method that is applicable to silk, selects the dyestuff that contains primary aromatic amine group as green dyestuff, and its structural formula is as follows:

[0037]

[0038] The aldehyde substance is specifically selected from acetaldehyde.

[0039] The coloring method is as follows:

[0040] Add 50g (0.0852mol) of dye and 3.41mol of acetaldehyde in 1000g of mulberry silk fabric; the dyeing bath ratio is 1:50; the pH value of the dyeing bath is 3.0, put it in the dyeing vat, and dye according to the process conditions, and the dyeing temperature is 95°C, holding time 60min.

[0041] After the dyeing is finished, it is washed with deionized water at 60°C and 15°C to remove impurities adsorbed on the silk, and dried in the air.

[0042] The maximum absorption wavelength of dyestuff (water soluble) is 625nm, and the maximum absorption wavelength after dyeing the fabric is 630nm. The silk after the method described in E...

Embodiment 3

[0043] Embodiment 3, a kind of rapid reactive dyeing method that is applicable to silk, selects the dyestuff that contains primary aramide group as black dyestuff, and its structural formula is as follows:

[0044]

[0045] C.I. Acid Black 210;

[0046] The aldehyde substance is specifically selected from propionaldehyde.

[0047] The coloring method is as follows:

[0048] Add 40g (0.0426mol) of dye and 1.28mol of propionaldehyde to 1000g of pressed silk fabric; the dyeing bath ratio is 1:50; the pH value of the dyeing bath is 3.5, dyeing is carried out according to certain technological conditions, and the dyeing temperature is 93°C. The holding time is 50min.

[0049] After the dyeing is finished, it is washed with deionized water at 60°C and 15°C to remove impurities adsorbed on the silk, and dried in the air.

[0050] Record dyestuff (water soluble) maximum absorption wavelength to be 628nm, the maximum absorption wavelength after dyeing fabric is 630nm, the silk af...

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Abstract

The invention discloses a quick-reaction-type dyeing method suitable for silk. Dyestuff containing aromatic primary amine groups is subjected to a high-temperature Mannich reaction with tyrosine residues in the silk under the effect of an aldehyde substance; the mass ratio of the dyestuff containing the aromatic primary amine groups to the silk is (0.03-0.05):1, the mole ratio of the dyestuff containing the aromatic primary amine groups to the aldehyde substance is 1:(20-40), the dyeing bath ratio is 1:(50+ / -5), the pH value of the dye bath is 3.0-3.5, the dyeing temperature is 90-95 DEG C, and the heat preservation time is 40-60 minutes. After dyeing is finished, washing and airing are conducted. By means of the method, the Mannich dyeing efficiency of the silk can be improved.

Description

technical field [0001] The invention relates to a rapid reactive dyeing method suitable for silk. Background technique [0002] Silk fiber has the problem of poor dyeing fastness, and the existing dyeing methods suitable for silk fiber have their own deficiencies. Synthetic dyes currently used for silk dyeing mainly include acid dyes, metal complex dyes and reactive dyes. Although acid dyes have bright color, complete chromatograms and high dye uptake, they are combined with silk fibers through ionic bonds and are easily affected by the solvation of water. Usually, the fastness to wet treatment is not good. Metal complex dyes form complexes on fibers with the help of metal (chromium, cobalt) ions, and have good fastness to wet treatment. However, a large amount of metal ions in fibers and dyeing solutions will cause negative effects on human health and the environment. There are reactive groups in the reactive dye structure, which can react with the amino group at the end ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/39D06P1/40D06P1/651D06P3/06D06P5/02
CPCD06P1/39D06P1/40D06P1/65112D06P3/06D06P5/02
Inventor 崔志华郭庆王星陈维国
Owner 浙江理工大学上虞工业技术研究院有限公司
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