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Polydopamine hair dye and preparation method therefor

A polydopamine and hair dye technology, applied in the field of daily chemical products, can solve problems such as hair damage, single color, long dyeing time, etc., and achieve the effects of mild experimental conditions, simple operation, and accelerated hair dyeing process.

Inactive Publication Date: 2021-06-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the main purpose of the present invention is to provide a polydopamine hair dye and its preparation method, which can solve the problems of hair damage, long dyeing time and single color caused by existing hair dyes

Method used

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  • Polydopamine hair dye and preparation method therefor
  • Polydopamine hair dye and preparation method therefor
  • Polydopamine hair dye and preparation method therefor

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preparation example Construction

[0037] The present invention provides a method of preparing a polyvino dye and its application thereof.

[0038] Polyopanam amine dye

[0039] A polybacamine dyeing agent comprising: dopamine, hydroxylase and transition metal chelating agent.

[0040] Among them, the dopamine is self-assembled into nanoparticles under the action of hydroxylase and transition metal chelating agent and adsorbed in the hair surface.

[0041] The dopamine, hydroxylase and the weight ratio of the transition metal chelating agent are (20 to 10): (3 to 0.15).

[0042] Preparation method of polyopamlamine dye

[0043] The preparation method of the polybacam amine dyeing agent of the present invention includes the steps of:

[0044] (1) Preparation of dopamine solution

[0045] Take the dopamine powder solid dissolved in the first class solvent to be formed into a solution. Stirring is carried out under room temperature conditions.

[0046] (2) Dyeing steps

[0047] The hydroxylase solution is added to the...

Embodiment 1

[0059] This embodiment provides a method of preparing a polybalmine dyeing agent, comprising the steps of:

[0060] (1) Preparation of dopamine solution

[0061] A 20 mg dopamine powder solid was taken in 2 ml of distilled water. Stirring is carried out under room temperature conditions.

[0062] (2) Dyeing steps

[0063] The solution of three sets of steps (1) was taken, and 120 μl of 7 mg / ml of a hydroxylase solution was added thereto. 0.5 ml of 10 mm of iron sulfate, ferrous sulfate, copper sulfate solution was then added. wait a minute.

[0064] The weight ratio of the dopamine, hydroxylase and the transition metal is 20: 0.8; 3; the polybutamine component is as figure 1 4. Down, 2, 3, 4, the size is more uniform.

[0065] (3) in vitro dyeing steps

[0066] Select the gray-white hair sample from cut to about 3 cm and place it in a 5 ml centrifuge tube. The above solution was poured into the centrifuge tube until there was no hair sample, waiting for a minute. Remove the hair...

Embodiment 2

[0069] This embodiment provides a method of preparing a polybalmine dyeing agent, comprising the steps of:

[0070] (1) Preparation of dopamine solution

[0071] The 10 mg dopamine powder solid was taken into a solution in 2 ml of distilled water. Stirring is carried out under room temperature conditions.

[0072] (2) Dyeing steps

[0073] To the solution of step (1), 60 μl of 3.5 mg / ml of hydroxylase solution was added. Then 0.5 ml of 0.5 mm of ferrous sulfate solution was added. Wait for about one minute.

[0074] The weight ratio of the dopamine, hydroxylase and the transition metal is 10.2.215; the polybatamine component is as image 3 The size is more uniform.

[0075] (3) in vitro dyeing steps

[0076] Select the gray-white hair sample from cut to about 3 cm and place it in a 5 ml centrifuge tube. The above solution was poured into the centrifuge tube until there was no hair sample, waiting for one minute. Remove the hair sample to rinse five times after flushing with flowi...

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Abstract

The invention relates to a polydopamine hair dye. The polydopamine hair dye comprises dopamine, tyrosine hydroxylase and a transition-metal chelator. The dopamine is self-assembled into nanoparticles in the presence of the tyrosine hydroxylase and the transition-metal chelator, and the nanoparticles can be adsorbed to the surface of hair. A weight ratio of the dopamine to the tyrosine hydroxylase to the transition-metal chelator is (20-10): (0.8-0.2): (3-0.15). The transition-metal chelator comprises one or more of copper ions, ferrous ions and ferric ions. The invention further discloses a preparation method for the polydopamine hair dye. The hair dye provided by the invention is of natural molecules and has good dyeing ability and biocompatibility. Compared with other commercial hair dyes and other polydopamine dyeing methods, the polydopamine hair dye has a higher hair dyeing speed and lighter environmental pollution under the same environmental conditions, is safe and effective, is convenient in use, can be applied to household hair dyeing scenes and has a good practical value.

Description

Technical field [0001] The invention belongs to the field of daily chemicals, involving a preparation and application of polybacamine dyeing agents. Background technique [0002] Melanin is a biological dye, usually present in a nanoparticle. Terbutone is oxidized by hydroxylase oxidation, and hydroxylate is generated, and the latter is produced by oxidation, decarboxylation, and polymerization. The color of human chromatin is mainly determined by natural pigment such as melanin, and as the age is increased, the melanocytes of forming pigments have been reduced, and the production of melanins is reduced to cause hair. Hair dye is increasingly becoming an indispensable daily product in life. [0003] In the ancient people, they colored hair with natural materials, and with the development of modern chemical industries, synthetic hair dye occupies market dominance. Synthetic hair dye is generally composed of three components of intermediate, coupling agents and oxidants. The hair d...

Claims

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Application Information

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IPC IPC(8): A61K8/84A61Q5/10
CPCA61K8/84A61K2800/4324A61Q5/10
Inventor 范震孙宇
Owner TONGJI UNIV
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