Red dyestuff with high color fastness to water

A technology for red dyes and color fastness, applied in the field of red dyes, can solve the problems of poor color fastness and acid dye shedding, and achieve the effect of good dyeing ability and improved color fastness.

Inactive Publication Date: 2018-09-25
吴文广
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because acid dyes contain water-soluble groups such as hydroxyl groups, they can directly dye protein fibers in acidic, weakly acidic or neutral media

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1

[0017] The red dye with high color fastness to water provided in this embodiment includes the following components in parts by weight: 20 parts by weight of acid red; 10 parts by weight of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylate Parts; 35 parts of urea; 5 parts of N-alkyl betaine, 1 part of 2-naphthalenesulfonic acid formaldehyde polymer sodium salt.

[0018] Dip the wool with the red dye obtained in this example for 4 hours and then dry it.

[0019] According to GB / T5713-1997 "Textile color fastness test milk water color fastness" test standard, the color fastness of dyed wool was tested. The results are shown in Table 1.

Example Embodiment

[0020] Example 2

[0021] The red dye with high color fastness to water provided in this embodiment includes the following components in parts by weight: 25 parts by weight of acid red; 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylate 5 Parts; 30 parts of urea; 7 parts of N-alkyl betaine, 1 part of 2-naphthalenesulfonic acid formaldehyde polymer sodium salt.

[0022] Dip the wool with the red dye obtained in this example for 4 hours and then dry it.

[0023] According to the GB / T5713-1997 "Textile Color Fastness Test Milk Color Fastness" test standard, the color fastness results of dyed wool are shown in Table 1.

Example Embodiment

[0024] Example 3

[0025] The red dye with high color fastness to water provided in this embodiment includes the following components in parts by weight: 20 parts by weight of acid red; 10 parts by methyl 3,4-epoxycyclohexanecarboxylate; 35 parts by urea; 5 parts of betaine and 1 part of 2-naphthalenesulfonic acid formaldehyde polymer sodium salt.

[0026] Dip the wool with the red dye obtained in this example for 4 hours and then dry it.

[0027] According to GB / T5713-1997 "Textile color fastness test milk water color fastness" test standard, the color fastness of dyed wool was tested. The results are shown in Table 1.

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PUM

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Abstract

The invention discloses a red dyestuff with high color fastness to water. The red dyestuff is prepared from the following components in parts by weight: 20 to 25 parts of acid red, 5 to 10 parts of cycloaliphatic epoxy resin, 30 to 35 parts of urea, 5 to 7 parts of N-alkylbetaine and 1 part of auxiliary agent. The cycloaliphatic epoxy resin is used as a carrier; the cycloaliphatic epoxy resin is stably combined with carboxyl of the N-alkylbetaine and carboxyl of the acid red through an epoxy group of the cycloaliphatic epoxy resin; furthermore, the N-alkylbetaine has relatively low viscosity and a solvent system is formed by combining the N-alkylbetaine and the urea; protein fibers have a relatively good dip dyeing capability so that the color fastness of the dyestuff is improved.

Description

technical field [0001] The invention belongs to the field of clothing, in particular to a red dye with high color fastness to water. Background technique [0002] Because acid dyes contain water-soluble groups such as hydroxyl groups, they can directly dye protein fibers in acidic, weakly acidic or neutral media, but the color fastness is generally poor, and acid dyes are easy to fall off from protein fibers, resulting in acid dyes being used in protein Fiber dyeing. [0003] In summary, there is an urgent need for a red dye with high color fastness to water. Contents of the invention [0004] In order to overcome the deficiencies of the prior art, the invention provides a red dye with high color fastness to water. [0005] The color fastness to washing is relative to the color fastness to washing of traditional acid dyes and protein fibers, and does not specifically refer to a certain numerical range. [0006] In order to solve the above problems, the technical scheme ...

Claims

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Application Information

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IPC IPC(8): C09B67/24C09B67/20
CPCC09B67/0072C09B67/006
Inventor 吴文广
Owner 吴文广
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