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Red sunproof K-type active dye and preparation method thereof

A technology of reactive dyes and light fastness, which is applied in the direction of reactive dyes, azo dyes, organic dyes, etc. It can solve the problems of lack of dye compounding and use, achieve excellent color fastness, improve light resistance, and simple synthesis process

Active Publication Date: 2018-11-30
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

[0005] At present, the main way to improve the light resistance of dyes is to combine dyes and light stabilizers (ultraviolet absorbers or hindered amine light stabilizers), but for reactive dyes, there is a lack of corresponding reactive ultraviolet absorbers or hindered amine light stabilizers. Compounding of dyes

Method used

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  • Red sunproof K-type active dye and preparation method thereof
  • Red sunproof K-type active dye and preparation method thereof
  • Red sunproof K-type active dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a kind of red sunfast reactive dye and preparation method thereof, carries out following steps successively:

[0035] 1) Dissolve 0.01mol X-type reactive dye C.I. reactive red 1 in 40mL water to obtain an aqueous reactive dye solution;

[0036] Add 0.01mol of 1,2,2,6,6-pentamethylpiperidinol dissolved in 20mL of acetone to the above reactive dye aqueous solution, then add 0.01mol of potassium carbonate as an acid-binding agent, at 40°C Reaction for 4 hours;

[0037] 2), after completion of the reaction, add 5% (mass %) HCl solution in the reaction solution to adjust the pH to 1, so that the red product is separated out; after filtering, the filter cake is pickled (the mass concentration is 5% hydrochloric acid aqueous solution Pickling, each consumption is 50ml, pickling 3 times altogether), drying (50 DEG C is dried to constant weight), obtains red K-type reactive dye.

[0038] The structural formula of this red K-type reactive dye is as follows:

[00...

Embodiment 2

[0041] Embodiment 2, a kind of red sunfast reactive dye and preparation method thereof, carries out following steps successively:

[0042] 1) Dissolve 0.01mol X-type reactive dye C.I. reactive red 2 in 40mL water to obtain an aqueous reactive dye solution;

[0043] Add 0.01mol of 2,2,6,6-tetramethylpiperidinamine dissolved in 10mL of acetone to the above reactive dye aqueous solution, then add 0.01mol of potassium carbonate as an acid-binding agent, and react at 50°C for 2 Hour;

[0044] 2), after completion of the reaction, add 5% (mass %) HCl solution in the reaction solution to adjust the pH to 1, so that the red product is separated out; Washing, each consumption is 50ml, altogether pickling 3 times) and drying (50 ℃ drying to constant weight), obtains red K-type reactive dye.

[0045] The structural formula of this red K-type reactive dye is as follows:

[0046]

[0047] 1 H NMR (400MHz, DMSO-d6): δ8.12(s,1H),7.93(d,2H),7.84(s,1H),7.46(m,3H),7.28(s,1H),4.03(m ,2H)...

Embodiment 3

[0048] Embodiment 3, change the 1,2,2,6,6-pentamethylpiperidinol in the embodiment 1 into 2,2,6,6-tetramethylpiperidinamine, the molar dosage remains unchanged; the rest are the same In Example 1.

[0049] The structural formula of the resulting product is:

[0050] 1H NMR (400MHz, DMSO-d6): δ8.21(d,1H),8.13(m,2H),7.84(s,1H),7.72(t,1H),7.49(t,1H),7.26(s ,1H), 4.01(m,2H), 2.63(m,1H), 2.02(s,1H), 1.61(d,4H), 1.15(s,12H); ESI MS(m / z,%): 813.1 ([M-Na] - ,100).

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Abstract

The invention discloses red sunproof active dye. The structural formula of the red sunproof active dye is shown in the description, wherein X is O or NH, Y is H or CH3, Z is H or SO3Na. Meanwhile, theinvention also discloses a preparation method of the red sunproof active dye. The preparation method comprises the following steps: adding hindered amine solution into active-dye aqueous solution, then adding potassium carbonate as an acid-binding agent, and reacting at a temperature of 40-50 DEG C; regulating pH of the obtained reaction liquid to be 1+ / -0.1 to generate precipitates; after filtering, carrying out acid pickling and drying on filter cakes and obtaining the red sunproof active dye. By adoption of the red sunproof active dye obtained by the invention, not only can the own light-resistant color fastness of the dye be improved, but also the light-resistant property of the dyed fiber can be improved.

Description

technical field [0001] The invention relates to a red sunfast K-type reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes, also known as reactive dyes, are a new class of water-soluble dyes that emerged in the 1950s. Reactive dye molecules contain reactive groups (such as chloro-s-triazine structures) that can react with hydroxyl groups in cotton fibers. When dyeing, it forms a covalent bond with the fiber to form a "dye-fiber" compound. Reactive dyes have the characteristics of bright color, good level dyeing, simple dyeing method, high color fastness, complete color spectrum and low cost. They are mainly used in the dyeing of cotton, hemp, viscose, silk, wool and other fibers and their blended fabrics. and printing. [0003] Azo reactive dyes have the advantages of bright color, complete chromatogram, and low production cost, and account for the largest proportion of reactive dyes. However, the light fastness of red azo reactive dye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/085
CPCC09B62/085
Inventor 崔志华胡倩王星
Owner 浙江理工大学上虞工业技术研究院有限公司
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