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Orange reactive dye compound as well as preparation method and application thereof

A technology of reactive dyes and compounds, applied in the directions of reactive dyes, chemical instruments and methods, dyeing methods, etc., can solve the problems of broken bonds and hydrolysis, the fastness to washing cannot meet the production requirements, and the color fastness of dyed fabrics is deteriorated.

Active Publication Date: 2018-09-14
ZHEJIANG KEYONG CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The covalent bonds between some reactive dyes and cotton fibers are affected by external conditions, and are prone to bond breaking and hydrolysis, which causes the color fastness of dyed fabrics to deteriorate, especially the washing fastness cannot meet the production requirements

Method used

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  • Orange reactive dye compound as well as preparation method and application thereof
  • Orange reactive dye compound as well as preparation method and application thereof
  • Orange reactive dye compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1) Diazotization: Put 100g of water and 100g of ice into 32.5g (0.2mol) of crixidin para-ester (2-methoxy-5 methyl para-ester) for beating for 1 hour, then add 40g of 31% hydrochloric acid ( Containing HCl 0.34mol), add 48g 30% sodium nitrite solution (containing 0.208mol sodium nitrite) within 20-30min, control pH=0.5-2.0, temperature T=0-20°C to carry out diazotization reaction, use 4 - The ethanol solution of dimethylaminobenzaldehyde detects the end point (that is, no discoloration within 5s). After the diazo end point is reached, the excess sodium nitrite is eliminated with sulfamic acid, and the diazo solution is stored for later use.

[0049] 2) One-time coupling: add 15.4g (0.1mol) 3,5-dihydroxybenzoic acid into 200g water for beating, and after beating, add 0.1mol crixidin para-ester diazonium solution into 3,5-dihydroxybenzoic acid solution At the same time, use 30% liquid caustic soda to control the pH at 4.0, control the temperature at 0-20°C, and react for...

Embodiment 2～19

[0053] With reference to the preparation method of disazo dyes described in Example 1, the dye compounds of the structure shown in the following table 1 can be obtained respectively, the difference is that with sulfonated para-ester, para-ester, meta-ester, 2, 5-dimethoxy para-ester, 2-methoxy meta-ester, and other substituted aromatic amines respectively replace the Crixidin para-ester for diazo coupling:

[0054] Table 1

[0055]

[0056]

[0057]

[0058]

Embodiment 20～30

[0060] With reference to the preparation method of disazo dyes described in Example 1, the dye compounds of the structure shown in the following table 2 can be prepared respectively, the difference is that with sulfonated para-ester, para-ester, meta-ester, 2, 5-dimethoxy-para-ester, 2-methoxy-meta-ester, 2-methoxy-para-ester, 2-methyl-para-ester and other substituted aromatic amines respectively replaced the crixidin para-ester for heavy Nitrogen coupling. After the coupling is completed, adjust the pH value to 10-11 with liquid caustic soda as usual and maintain it at 25-30°C for 45-60 minutes, then add acid to adjust the pH value to 5-6.

[0061] Table 2

[0062]

[0063]

[0064]

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PUM

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Abstract

The invention discloses an orange reactive dye compound as well as a preparation method and the application thereof. The structure of the orange reactive dye compound is as shown in the following formula (I), wherein R1, R2, R3 and R4 are independently H, C1 to C4 linear chain or branched alkyl, C1 to C4 alkoxy or sulfo group; X1 and X2 are independently H, C1 to C4 linear chain or branched alkyl,-SO2Y1, -NHCO(CH2)1 to 3 SO2Y2 or -CONH(CH2)1 to 3 SO2Y3, and at least one of X1 and X2 is a fibrous active group, namely -SO2Y1, -NHCO(CH2)1-3 SO2Y2 or -CONH(CH2)1 to 3 SO2Y3; Y1 to Y3 are independently -CH=CH2, -C2H4OSO3H or -CH2CH2Cl. The invention provides an orange reactive dye product which contains the orange reactive dye compound. The orange reactive dye compound and the orange reactive dye product are applicable to printing and dyeing of a cellulosic fiber, a polyarmide fiber and a fabric thereof, and have the advantages of high leveling property, high lifting force, high fixation rate, clear dyeing residual liquid, excellent washability and color fastness and high stability in fiber combination.

Description

(1) Technical field [0001] The present invention relates to a kind of reactive dye compound, particularly relate to a kind of orange reactive dye compound and its preparation method and the application in cellulose fiber, polyamide fiber and fabric printing and dyeing thereof. (2) Background technology [0002] The improvement of the lifting power and washing fastness of fabrics dyed with reactive dyes has always been the focus and difficulty in printing and dyeing production. The covalent bonds between some reactive dyes and cotton fibers are affected by external conditions, and are prone to bond breaking and hydrolysis, which causes the color fastness of dyed fabrics to deteriorate, especially the washing fastness cannot meet the production requirements. In order to solve the above problems, the inventor has developed a new active orange structure, adopting 3,5-dihydroxybenzoic acid as a coupling component, and has carried out in-depth and meticulous research on this compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/513D06P1/38
CPCC09B62/513D06P1/384
Inventor 高怀庆何耀耀阙洪辉刘华玮陈晶晶沈龙袁鹏程
Owner ZHEJIANG KEYONG CHEM CO LTD
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