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Modified pearl powder, preparation method thereof and cosmetic containing modified pearl powder

A pearl powder and modified technology, used in cosmetics, cosmetic preparations, cosmetic preparations, etc., can solve the problems of reduced cosmetic stability, destruction of cosmetic emulsion systems and suspension systems, and inability to degrade silica, achieving excellent Skin affinity, excellent moisturizing effect

Active Publication Date: 2022-05-06
SHANGHAI CO FUN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pearls contain a large amount of amino acids and trace elements needed by the human body, which are close to the nutrients needed by human skin and are easily absorbed by the skin. Therefore, pearl powder has a good effect on beauty and health care; however, calcium carbonate and trace elements in pearl powder It will destroy the emulsification system and suspension system of cosmetics, resulting in a decrease in the stability of cosmetics
[0003] Cosmetics are classified according to their functions and are mainly divided into skin care products and make-up cosmetics. In order to make pearl powder applicable to make-up cosmetics, the traditional technique is to form a coating layer on the surface of pearl powder to obtain modified pearl powder. However, the traditional The material of the coating layer is selected from hydrophilic materials such as silicon dioxide. On the one hand, the modified pearl powder is still difficult to be compatible with other ingredients in make-up cosmetics, which limits the application of modified pearl powder in make-up cosmetics. , silica cannot be degraded, and does not conform to the current concept of green products

Method used

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  • Modified pearl powder, preparation method thereof and cosmetic containing modified pearl powder
  • Modified pearl powder, preparation method thereof and cosmetic containing modified pearl powder
  • Modified pearl powder, preparation method thereof and cosmetic containing modified pearl powder

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preparation example Construction

[0027] The preparation method of modified pearl powder provided by the invention may further comprise the steps:

[0028] S1, mix pearl powder with water to obtain a slurry, mix lauroyl lysine, alkaline substances and water to obtain a first solution with a pH greater than or equal to 13.25, and mix the first solution with the slurry to obtain a pH greater than or equal to equal to the first suspension of 11.5;

[0029] S2, under the condition of stirring, add the acidic solution to the first suspension to obtain the second suspension, wherein the mass fraction of the acidic solution is 5%-15%, and the adding speed of the acidic solution is gradually reduced, with 500mL For the first suspension, the initial addition rate of the acidic solution is 0.02mL / s-0.2mL / s; and

[0030] S3, aging the second suspension to obtain modified pearl powder.

[0031] In step S1, the pH of the first solution is greater than or equal to 13.25, and the pH of the first suspension is greater than ...

Embodiment 1

[0058] Mix 100g of pearl powder with a particle size of 3 μm and 400g of deionized water, and stir evenly at room temperature to obtain a slurry; after mixing 24g of deionized water and 4.4g of a 31% sodium hydroxide aqueous solution with a mass fraction of 31%, add 3g Lauroyl lysine, after dissolving completely, obtains the first solution that pH is 13.27; The first solution is added in the slurry, stirs 30min, obtains the first suspension that pH is 12.63; In terms of 100g pearl powder, lauroyl lysine The quality of acid and the particle size of pearl powder satisfy the following relationship: 1g: 1μm.

[0059] Under the stirring condition of 310r / min, slowly add hydrochloric acid with a mass fraction of 12% into the first suspension, and the addition speed gradually slows down. Based on 500ml of the first suspension, the initial addition speed of the acidic solution is 0.06mL / s, the second suspension with a pH of 6.32 was obtained.

[0060] Aging the second suspension for...

Embodiment 2

[0062] Mix 100g of pearl powder with a particle size of 7.5 μm and 400g of deionized water, stir evenly at room temperature to obtain a slurry; mix 24g of deionized water with 4.4g of 31% sodium hydroxide aqueous solution, and then add 3g Lauroyl lysine obtains the first solution that pH is 13.25; The first solution is added in the slurry, stirs 30min, obtains the first suspension that pH is 12.58; Based on 100g pearl powder, the quality of lauroyl lysine The particle size of pearl powder satisfies the following relationship: 0.4g: 1μm.

[0063] Under the stirring condition of 316r / min, hydrochloric acid with a mass fraction of 12% was slowly added to the first suspension to obtain a second suspension with a pH of 6.24.

[0064] Aging the second suspension for 30 minutes and then filtering, collecting the filter cake, washing the filter cake with water until the conductivity of the effluent is less than or equal to 100 μs / cm, drying the washed filter cake, and mechanically pul...

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Abstract

The preparation method of the modified pearl powder comprises the following steps: mixing pearl powder with water to obtain a slurry, mixing lauroyl lysine, an alkaline substance and water to obtain a first solution with the pH value of greater than or equal to 13.25, adding a second solution with the pH value of greater than or equal to 13.25 into the first solution, and uniformly stirring to obtain the modified pearl powder. Mixing the first solution with the slurry to obtain a first suspension with the pH greater than or equal to 11.5; under the stirring condition, an acid solution is added into the first suspension liquid, a second suspension liquid is obtained, the mass fraction of the acid solution is 5%-15%, the adding speed of the acid solution is gradually reduced, and the initial adding speed of the acid solution is 0.02 mL / s-0. 2 mL / s according to 500 mL of the first suspension liquid; curing the second suspension to obtain modified pearl powder; the modified pearl powder obtained by the preparation method has good hydrophobicity, adhesion and ductility, and can be applied to cosmetics.

Description

technical field [0001] The invention relates to the technical field of cosmetics, in particular to modified pearl powder and a preparation method thereof, and color cosmetics including modified pearl powder. Background technique [0002] Pearls contain a large amount of amino acids and trace elements needed by the human body, which are close to the nutrients needed by human skin and are easily absorbed by the skin. Therefore, pearl powder has a good effect on beauty and health care; however, calcium carbonate and trace elements in pearl powder It will destroy the emulsification system and suspension system of cosmetics, resulting in a decrease in the stability of cosmetics. [0003] Cosmetics are classified according to their functions and are mainly divided into skin care products and make-up cosmetics. In order to make pearl powder applicable to make-up cosmetics, the traditional technique is to form a coating layer on the surface of pearl powder to obtain modified pearl p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/98A61K8/44A61Q19/00A61Q1/12
CPCA61K8/987A61K8/44A61Q19/00A61Q1/12A61K2800/412A61K2800/56
Inventor 杨小娟刘晗张文彬吴建军
Owner SHANGHAI CO FUN BIOTECH
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