Orangered-series benzyl and ester contained azo-disperse dye as well as preparation method and application thereof

Abstract

The invention discloses an orangered-series benzyl and ester contained azo-disperse dye as well as a preparation method and an application thereof. The structural formula of the disperse dye is shown as the specification, wherein R1 and R2 are -H, NO2,-Cl or Br respectively, or R1 and R2 are -H, NO2, -Cl or Br simultaneously, R3 is -CH3, -C2H5, -C4H9 and -C6H5. The preparation method of the disperse dye comprises steps as follows: diazo components are subjected to diazotization firstly, and then the diazo components and coupling components react to prepare the disperse dye. The obtained disperse dye is used in a single-structure mode and can be compounded to form a dye with a mixed structure when the dye is commercialized, and the color turns from orange to red. According to the azo-disperse dye with the coupling components comprising benzyl-contained nitrogen atoms, the color is bright during dyeing, the dyeing rate is high, the strength is high, and the sublimation fastness is excellent; and the azo-disperse dye is applicable to dyeing of polyamide, polyurethane and carbonic acid fiber, ultrafine fiber and cotton-polyester blended fabric.

Description

technical field

[0001] The invention relates to a class of orange-red series azo disperse dyes containing benzyl and ester groups in fine chemical industry and its preparation method and application. Background technique

[0002] Common bright orange and red series disperse dyes have low strength, are not suitable for dyeing dark colors, and are not suitable for mixing black with a strength of 300%, and the fastness to washing and sublimation is relatively poor. Although some varieties can fight high-strength black, their fastness is average.

[0003] With the development of the dye industry, the advancement of dyeing technology, and the improvement of consumer demand, bright colors, deep dyeing, and high fastness are must-haves for high-end fabric printing and dyeing, and their market demand is gradually increasing. Contents of the invention

[0004] The object of the present invention is to provide a kind of orange-red series azo disperse dyes containing benzyl and este...

Examples

example 1

[0022] Add 13.8 grams (100%) of p-nitroaniline into 50 grams of 20% dilute hydrochloric acid, heat up to 50°C, stir for half an hour, add ice to cool to 0°C, add 7 grams (100%) of sodium nitrite aqueous solution, and keep React at 0-5°C for three hours, test with potassium iodide test paper to show blue color, add 0.1 g of urea, filter to obtain diazonium solution for use. At the same time, add 25.5 grams (100%) of N-benzyl-N-acetoxymethyl to 80 grams of 50% dilute sulfuric acid, add 150 ml of ice water, add ice and cool down to 0-5 °C to form a coupling solution . Then slowly add the prepared diazo solution into the coupling solution, and keep it below 5°C to react until the diazo component disappears, and the coupling compound is in a slight excess. Raise the temperature to 80°C and filter, wash with water until neutral, suction filter to obtain a filter cake and dry to obtain 38.1 g of disperse dye, with a yield of 94.7%.

example 2-6

[0024] In each example, the amount of the diazo component is 0.1 mole (R1 and R2 in the diazo component are shown in Table 1), and the ratio of other materials (R3 groups in the coupling component are shown in Table 1) (mol ratio) and method of operation are with example 1, and its result is:

example 2

[0025] Example 2: Obtain 38.3 grams of dyestuff, yield rate is 91.8%

technical field

[0001] The invention relates to a class of orange-red series azo disperse dyes containing benzyl and ester groups in fine chemical industry and its preparation method and application. Background technique

[0002] Common bright orange and red series disperse dyes have low strength, are not suitable for dyeing dark colors, and are not suitable for mixing black with a strength of 300%, and the fastness to washing and sublimation is relatively poor. Although some varieties can fight high-strength black, their fastness is average.

[0003] With the development of the dye industry, the advancement of dyeing technology, and the improvement of consumer demand, bright colors, deep dyeing, and high fastness are must-haves for high-end fabric printing and dyeing, and their market demand is gradually increasing. Contents of the invention

[0004] The object of the present invention is to provide a kind of orange-red series azo disperse dyes containing benzyl and este...

Examples

example 1

[0022] Add 13.8 grams (100%) of p-nitroaniline into 50 grams of 20% dilute hydrochloric acid, heat up to 50°C, stir for half an hour, add ice to cool to 0°C, add 7 grams (100%) of sodium nitrite aqueous solution, and keep React at 0-5°C for three hours, test with potassium iodide test paper to show blue color, add 0.1 g of urea, filter to obtain diazonium solution for use. At the same time, add 25.5 grams (100%) of N-benzyl-N-acetoxymethyl to 80 grams of 50% dilute sulfuric acid, add 150 ml of ice water, add ice and cool down to 0-5 °C to form a coupling solution . Then slowly add the prepared diazo solution into the coupling solution, and keep it below 5°C to react until the diazo component disappears, and the coupling compound is in a slight excess. Raise the temperature to 80°C and filter, wash with water until neutral, suction filter to obtain a filter cake and dry to obtain 38.1 g of disperse dye, with a yield of 94.7%.

example 2-6

[0024] In each example, the amount of the diazo component is 0.1 mole (R1 and R2 in the diazo component are shown in Table 1), and the ratio of other materials (R3 groups in the coupling component are shown in Table 1) (mol ratio) and method of operation are with example 1, and its result is:

example 2

[0025] Example 2: Obtain 38.3 grams of dyestuff, yield rate is 91.8%

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