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Preparation method of semi-permanent color hair dye

A hair dye, semi-permanent technology, applied in hair care, pharmaceutical formulations, cosmetic preparations, etc., can solve problems such as lesions, skin itching, allergies, etc., achieve fast hair dyeing speed, reduce hair damage, and long-lasting hair dyeing time

Inactive Publication Date: 2019-04-12
安徽清彩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the easy penetration of traditional small molecule hair dyes can also penetrate into the skin, causing skin itching, allergies or serious lesions

Method used

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  • Preparation method of semi-permanent color hair dye
  • Preparation method of semi-permanent color hair dye
  • Preparation method of semi-permanent color hair dye

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0035] First weigh 0.33g of toluene diisocyanate (TDI), start stirring and heat up to 50-55°C, take 1.05g of blue reactive dye monomer (DYE1) and add it to 10g of acetone, stir and disperse evenly, then slowly add it to the Toluene diisocyanate (TDI), add 0.42g of KH550 for 4-5 hours, then heat up to 65-70°C in about 10 minutes, and keep warm for 4-5 hours. The acetone is removed under the conditions of 50°C and 0.01MPa negative pressure to obtain organosilane-modified dye for blue hair dye, the code is 1#.

preparation Embodiment 2

[0037] The blue reactive dye monomer (DYE1) in dye preparation example 1 is replaced by yellow reactive dye (DYE4), replaces toluene diisocyanate (TDI) with isophorone diisocyanate (IPDI) simultaneously, obtains organosilane modification Dyes for yellow hair dye, number 2#.

preparation Embodiment 3

[0039] The blue reactive dye monomer (DYE1) in the dye preparation example 1 is replaced by a black reactive dye (DYE3), while replacing toluene diisocyanate (TDI) with isophorone diisocyanate (IPDI), and replacing KH550 with KH551 , to obtain organosilane-modified dyes for black hair dyes, numbered 3#.

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Abstract

The invention discloses a preparation method of a semi-permanent color hair dye, and relates to the technical field of fine chemicals. The preparation method comprises the following steps: step 1, preparation of a small-molecule dye with organosilane properties: connecting a color reactive dye monomer with organo-siloxane by using a diisocyanate bond to prepare a dye used for hair dyes; and step 2, preparation of the hair dye: hydrolyzing the organo-siloxane-modified dye used for hair dyes, and subjecting the hydrolyzate to self-coupling gelling. The method synthesizes the semi-permanent small-molecule dye used for hair dyes, and the dye is used on hairs to form a macromolecular structure by self cross-linking so as to form a macromolecular hair dye. The hair dye has the characteristics ofmacro molecules, cannot be absorbed by human body cells, and has the advantages of being safe, non-toxic, durable, washable, and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, in particular to a method for preparing a semi-permanent color hair dye. Background technique [0002] With the improvement of people's living standards, hair dye, as a daily beauty cosmetic for changing hair color, has gradually entered the common people, and has become a declaration of modern people's self-expression and pursuit of individuality. On the one hand, hair dye can make the hair color return to nature and make up for some congenital deficiencies or acquired regrets; on the other hand, as an embellishment of individuality and fashion, many people request to change their single hair color in order to pursue colorful hair colors. In recent years, hair dyeing has become a trend symbol of fashion. In recent years, the global hair dye market demand is strong, and it has become the most active product in the field of cosmetics. However, in traditional hair dyes, cases of allergies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/898A61K8/04A61K8/58A61Q5/10C08G18/38C08G18/32
CPCA61K8/898A61K8/042A61K8/585A61K2800/432A61Q5/10C08G18/3855
Inventor 陈军李军配李怡霞项羽曹苏毅吴同静吴祥松杨文东
Owner 安徽清彩科技有限公司
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