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Sulfhydryl modified dye and its preparing method for sulfhydryl modified hair dye

A hair dye and modification technology, applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problem that the disadvantages of hair dyes have not been fundamentally solved, and achieve the guarantee of toxicity and safety, good washing resistance, and effective use. Effect

Inactive Publication Date: 2008-11-12
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is undoubtedly a temporary solution, not a permanent cure, and the problems of hair dyes have not been fundamentally resolved.

Method used

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  • Sulfhydryl modified dye and its preparing method for sulfhydryl modified hair dye
  • Sulfhydryl modified dye and its preparing method for sulfhydryl modified hair dye
  • Sulfhydryl modified dye and its preparing method for sulfhydryl modified hair dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1. the synthesis of mercapto-modified naphthol ether

[0056] 1. Etherification reaction

[0057] In a three-necked flask equipped with a stirring bar, a thermometer, a reflux condenser, and a dropping funnel, add 4.5 g (0.013 mol) of {1-[4-(phenylazo)phenyl]azo}-β-naphthol And 135ml of benzene, heated to reflux for 1h to dissolve completely. At 70°C, a mixed solution of 1ml (0.013mol) epichlorohydrin and 15ml of benzene was added dropwise, the addition was completed in 30 minutes, and then refluxed for 2 hours.

[0058] 2. Thiolation reaction and post-treatment

[0059] Weigh 6.7g (0.028mol) of sodium sulfide nonahydrate, add 8ml of water and stir to dissolve completely, slowly add 5.6g (0.028mol) of 18.5% HCl dropwise therein to prepare a NaSH solution. Heat the etherification reaction product to 70°C, add NaSH solution dropwise, complete the dropwise addition for 20 minutes, and continue stirring for 30 minutes. After the reaction is complete, evaporate...

Embodiment 2

[0060] Embodiment 2. The preparation of mercapto-modified hair dye

[0061] Table 1 formula (mass percentage w%)

[0062]

[0063] Preparation method: Dissolve the mercapto-modified dye in castor oil, add emulsifier, then add ammonia, hydrogen peroxide and water, stir for a while, and obtain a uniform emulsion, which is the mercapto-modified hair dye. The emulsifier is sodium dodecylbenzenesulfonate.

Embodiment 3

[0064] Embodiment 3. The use effect of hair dye

[0065]How to use the hair dye: clean the black hair bundles and dry them naturally, then bleach the hair to a light flaxen color with bleaching powder, and then use formula 1 or 2 to dye the hair; or clean the black hair bundles and dry them naturally Apply formula 3, 4 or 5 directly to color hair. When dyeing hair, wet hair with water first, and then wipe off excess water with a towel, subject to no dripping. Apply the hair dye to the hair with a soft brush and rub it evenly with your hands. Cover with plastic wrap, keep at a certain temperature and time, remove the plastic wrap, and rinse with ordinary shampoo. After the hair is dry, observe the color of the hair, as well as the condition after treatment with shampoo and conditioner. The test results are shown in Table 2, Table 3 and Table 4.

[0066] Table 2 formula 1 hair dyeing effect comparison

[0067]

[0068] Table 3 formula 2 hair dyeing effect comparison

[...

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Abstract

The present invention relates to a mercapto-group modified coloring material and preparation method of mercapto-group modified hair-dying agent by using said coloring material. The invented mercapto-group modified coloring material is R-phenol-2-hydroxy-3-mercaptopropionic ether which is made up by making R-phenol dyes intermediate and epoxy chloropropane undergo the process of etherification, then making the etherified product and NaSH undergo the process of mercapto-group modification reaction. Said mercapto-group modified coloring material and hair-dying adjuvant are compounded so as to obtain the invented mercapto-group modified hair-dying agent.

Description

technical field [0001] A mercapto-modified dye and a preparation method for a mercapto-modified hair dye belong to the technical field of synthetic dyes and hair dyes. Background technique [0002] In recent years, hair dyes have become one of the most actively developed products in the field of cosmetics. In the past few years, the average annual growth rate of the global hair dye market is about 5%, and it is expected that the growth rate of its demand will continue to grow at a rate of 8%-10% in the next few years. By 2007, the total sales of global hair care products can reach 6.86 billion US dollars, and its leading product is hair coloring products, accounting for about 25% of sales. [0003] According to the length of time the color is maintained, hair dyes can be divided into three types: temporary, semi-permanent and permanent hair dyes. Most of the hair dyes on the market today are oxidative permanent hair dyes. The main dye intermediates used include p-phenylen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/15C09B62/01A61K8/46A61Q5/10
Inventor 曹光群安震亚罗玲玲尤莹贺锐
Owner JIANGNAN UNIV
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