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A kind of red dye mixture and its application and dyeing method

A technology for red dyes and dye compounds, applied to red dye compositions and their dyeing applications on fibers and dyeing methods, can solve problems such as poor wet fastness

Active Publication Date: 2021-07-06
苏州科法曼化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nylon can be dyed with reactive and acid dyes, both of which can obtain bright colors, but most of the acid dyes contain water-soluble groups such as sulfonic acid groups and carboxyl groups, which can directly dye fibers in acidic, weakly acidic or neutral media, but the wet treatment fastness Poor; and acidic medium and acidic mordant dyes can make fabrics have better color fastness to sunlight and washing, but because they contain metals, their application is limited

Method used

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  • A kind of red dye mixture and its application and dyeing method
  • A kind of red dye mixture and its application and dyeing method
  • A kind of red dye mixture and its application and dyeing method

Examples

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Effect test

preparation example Construction

[0056] The preparation method of the dye composition of the present invention comprises mixing the dye compound represented by the above-mentioned general formula (I) and the dye compound represented by the general formula (II) in a prescribed weight ratio. Various conventional methods can be used for mixing, such as mechanical mixing methods and the like. When mixed, the dye compound represented by the general formula (I) and the dye compound represented by the general formula (II) may exist in the form of powder, or in the form of granules, or in the form of an aqueous solution. For example, the mixing step can be carried out in suitable mills such as ball mills or pin mills as well as in kneaders or mixers.

[0057] The dye composition of the present invention is suitable for dyeing cellulose fibers, polyamide fibers, protein fibers and various materials blended and interwoven.

[0058] The dyestuff composition of the present invention can be applied to the fiber material ...

Embodiment 1

[0080] Lift rate test (K / S value at absorption wavelength 530nm)

[0081] Measure the lifting rate of the following dyes according to the measurement method of the above-mentioned embodiment, and the test results are recorded in Table 2.

[0082] The K / S value of table 2 different concentration dyes

[0083]

[0084] It can be seen from Table 2:

[0085] The red dye composition of the present invention has good lifting performance. Also the lift is better compared to the reference dye.

Embodiment 2

[0087] Color fastness to light

[0088] The color fastness to light of nylon ammonium was measured after different dyes were dyed according to the measurement method of the above-mentioned embodiment, and the test results were recorded in Table 3.

[0089] The color fastness to light of table 3 dyestuff

[0090]

[0091] It can be seen from Table 3:

[0092] The red dye composition of the present invention has better color fastness to light. Also, the color fastness to light is better compared to the reference dye.

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Abstract

The invention provides a red dye composition and its application and dyeing method. The dye composition comprises one or more dye compounds represented by the general formula (I) and one or more dye compounds represented by the general formula (II) mixed in a certain proportion. The dye composition of the invention has good color homogeneity and various fastnesses, especially excellent water fastness, and can be widely used for coloring cellulose fibers, polyamide fibers, protein fibers and blended fabrics. And when it is used for dyeing nylon and its blended fabrics, it has an unexpected coloring effect.

Description

technical field [0001] The invention relates to a dye composition and its application and dyeing method on fibers. Specifically, the present invention relates to a red dye composition and its dyeing application and dyeing method on fibers. Background technique [0002] Reactive dyes, also known as reactive dyes, are a new type of water-soluble dyes that appeared in the 1950s. They have the characteristics of bright colors, good level dyeing, simple dyeing methods, high color fastness, complete color spectrum and low cost. Reactive dye molecules contain groups that can chemically react with fibers. When dyeing, dyes react with fibers and form covalent bonds. Economical dyeing processes and simple dyeing operations can be used to obtain high levels of fastness. The performance, especially the wet fastness, has become one of the best choices to replace banned dyes and other types of dyes for cellulose such as sulfur dyes, ice dyes and vat dyes. With the rapid reduction of som...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/22C09B67/24D06P3/85D06P1/382D06P1/384
CPCC09B67/0052C09B67/0072D06P1/382D06P1/384D06P3/8209
Inventor 谢兵郑怡华曾建平
Owner 苏州科法曼化学有限公司