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Preparation technology of benzodifaradone kind disperse red dye and its product

A technology of benzodifuranone and disperse red, which is applied in the direction of organic dyes, azo dyes, chemical instruments and methods, etc., can solve the problems of poor wet fastness and perspiration fastness, insufficient performance of microfibers, molar The extinction coefficient is not high, so as to achieve the effects of less environmental pollution, bright color and shortened process time

Active Publication Date: 2006-06-14
ZHEJIANG RUNTU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the composite dye has a certain dyeing performance, and the level dyeing property and the performance of improving the exhausted dyeing rate are relatively good, it can be used for dyeing polyester fibers of conventional fineness and superfine fibers, but because the invention only uses azo compounds , it will inevitably lead to insufficient color brightness, low molar extinction coefficient, weak light fastness, poor wet fastness, sweat fastness and other properties, and the performance of the application on ultrafine fibers is not superior enough.

Method used

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  • Preparation technology of benzodifaradone kind disperse red dye and its product
  • Preparation technology of benzodifaradone kind disperse red dye and its product
  • Preparation technology of benzodifaradone kind disperse red dye and its product

Examples

Experimental program
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Effect test

Embodiment 1

[0026] 1. Synthesis of mandelic acid: add 23 parts of benzaldehyde in a 250ml three-necked flask, 20ml of chloroform, 3 parts of composite catalyst triethyl-benzyl-ammonium bromide, octaalkyl-trimethyl-ammonium bromide, Control the reaction temperature at 30°C, add 50 parts of 60% caustic soda solution, stir for 6 hours, add 200 parts of water, remove the organic layer, adjust the pH value to 1 with 30% hydrochloric acid, cool to 5°C, filter and dry Get mandelic acid.

[0027]2. Semi-condensation reaction: Add 20 parts of hydroquinone and 24 parts of mandelic acid into a 250ml three-necked flask, stir for 3 hours, add 60 parts of 40% sulfuric acid, control the temperature at 60°C, keep it warm for 12 hours, and cool down to At 15°C, pour into ice water, filter, wash, and dry to obtain the semi-condensed product.

[0028] 3. Full condensation reaction: Add 10 parts of semi-condensed products and 90 parts of acetic acid containing sulfuric acid into a 250ml three-necked flask, ...

Embodiment 2

[0032] 1. Synthesis of mandelic acid: Add 23 parts of propoxybenzaldehyde, 15ml of acetone, 5ml of chloroform in a 250ml three-necked flask, composite catalyst triethyl-benzyl-ammonium bromide, nonalkyl-trimethyl- 3 parts of ammonium bromide, the reaction temperature is controlled at 45°C, add 50 parts of 60% caustic soda solution, stir for 5 hours, add 200 parts of water, remove the organic layer, adjust the pH value to 2 with 30% hydrochloric acid, cool to 15°C, After filtering and drying, mandelic acid is obtained.

[0033] 2. Semi-condensation reaction: Add 20 parts of catechol and 24 parts of p-propoxymandelic acid into a 250ml three-neck flask, stir for 4 hours, add 60 parts of 60% sulfuric acid, control the temperature at 90°C, and keep it warm for 9 hours , cooled to 20°C, poured into ice water, filtered, washed and dried to obtain the semi-condensed product.

[0034] 3. Full condensation reaction: Add 10 parts of semi-condensation products and 90 parts of acetic acid...

Embodiment 3

[0038] 1. Synthesis of mandelic acid: Add 23 parts of benzaldehyde, 10ml of chloroform, 10ml of DMF, composite catalyst triethyl-benzyl-ammonium bromide, dedecyl-trimethyl-ammonium bromide in a 250ml three-necked flask Parts, the reaction temperature is controlled at 60°C, add 50 parts of 60% caustic soda solution, stir for 4 hours, add 200 parts of water, remove the organic layer, adjust the pH value to 3 with 30% hydrochloric acid, cool to 20°C, filter and dry Then get mandelic acid.

[0039] 2. Semi-condensation reaction: Add 20 parts of hydroquinone and 24 parts of mandelic acid into a 250ml three-necked flask, stir for 3 hours, add 60 parts of 75% sulfuric acid, control the temperature at 105°C, keep it warm for 6 hours, and cool down to At 25°C, pour into ice water, filter, wash, and dry to obtain the semi-condensed product.

[0040] 3. Full condensation reaction: Add 10 parts of semi-condensation products and 90 parts of acetic acid containing sulfuric acid in a 250ml ...

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Abstract

The present invention relates to a preparation process of disperse red dyes and its product. In particular, it relates to a synthesis process of benzodifuran-based disperse red dyes by adopting phase transfer catalysis carbonyl addition process and its prepared product. Said product has high molar extinction coefficient, strong color fastness of light and washing, strong wet-fastness and brilliance colored light, etc.

Description

technical field [0001] The present invention relates to a preparation process of disperse red dye and its products, in particular to a synthesis process of benzodifuranone-based disperse red dye by phase-transfer catalytic carbonyl addition method and the prepared benzodifuranone A disperse red dye product. Background technique [0002] Superfine polyester fiber is a new direction of chemical fiber development in recent years. It has soft silk feel, comfortable wearing, good air permeability, wrinkle resistance, stain resistance and other excellent properties. However, due to the characteristics of fineness, large specific surface area, and high-density structure inside, microfibers have problems such as difficulty in dyeing dark colors, poor level dyeing, and low fastness, especially wet fastness, during the dyeing process. Traditional disperse dyes are difficult to solve the above problems well. Therefore, it is imperative to develop new dyes to meet the dyeing requiremen...

Claims

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Application Information

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IPC IPC(8): C09B57/00
Inventor 阮加根赵国生陈百龙阮国标
Owner ZHEJIANG RUNTU
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