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CN-122005328-A - High-hydrophobicity mica-cinnamaldehyde composition and preparation method and application thereof

CN122005328ACN 122005328 ACN122005328 ACN 122005328ACN-122005328-A

Abstract

The invention relates to a high-hydrophobicity mica-cinnamaldehyde composition, and a preparation method and application thereof, and belongs to the technical field of fine chemical engineering and composite materials. The technical problems to be solved are to solve the problems of high total modifier consumption, high raw material cost, no sun protection and the like. The preparation method comprises the following steps of mixing gamma-aminopropyl triethoxysilane, water and mica to obtain slurry A, stirring the slurry A at 60-110 ℃ for 20-40min, mixing n-octyl triethoxysilane and dodecyl triethoxysilane with the slurry A to obtain slurry B, stirring the slurry B at 70-90 ℃ for 20-40min, mixing ammonia water with the slurry B to obtain slurry C, stirring the slurry C at 125-135 ℃ for 1-2h to obtain modified mica, and mixing cinnamaldehyde with the modified mica to obtain the sun-screening high-hydrophobicity mica-cinnamaldehyde composition.

Inventors

  • LIU YI
  • MO JINGYANG
  • HU LI
  • YANG ZHITING
  • CAI ZHIYONG
  • DING GUOWEI
  • MAI LIWEN

Assignees

  • 广东碧茜生物科技有限公司
  • 广东药科大学

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The preparation method of the mica-cinnamaldehyde composition with high hydrophobicity is characterized by comprising the following steps of: (1) Mixing gamma-aminopropyl triethoxysilane, water and mica to obtain slurry A; (2) Stirring the slurry A at 60-110 ℃ for 20-40min; (3) Mixing n-octyl triethoxysilane and dodecyl triethoxysilane with the slurry A to obtain slurry B; (4) Stirring the slurry B at 70-90 ℃ for 20-40min; (5) Mixing ammonia water with the slurry B to obtain slurry C; (6) Stirring the slurry C at 125-135 ℃ for 1-2h to obtain modified mica; (7) And mixing cinnamaldehyde with modified mica to obtain the high-hydrophobicity mica-cinnamaldehyde composition.
  2. 2. The method according to claim 1, wherein the volume ratio of the gamma-aminopropyl triethoxysilane in step (1), the n-octyl triethoxysilane in step (3) and the dodecyl triethoxysilane in step (3) is 1-2:0.6-1:0.6-1 in mL: mL.
  3. 3. The method according to claim 1, wherein the ratio of the mass of mica in step (1) to the total volume of γ -aminopropyl triethoxysilane in step (1), n-octyl triethoxysilane in step (3) and dodecyl triethoxysilane in step (3) is 50g:1-2mL.
  4. 4. A preparation method according to claim 3, wherein the ratio of the mass of mica in step (1) to the total volume of γ -aminopropyl triethoxysilane in step (1), n-octyl triethoxysilane in step (3) and dodecyl triethoxysilane in step (3) is 50g:1-1.4mL.
  5. 5. The method of claim 1, wherein the mass of mica and the volume of water in step (1) are 50g:0.5-1.5mL.
  6. 6. The process according to claim 1, wherein the temperature in step (2) is 70-100 ℃ for 20-40min.
  7. 7. The preparation method of the ammonia water according to claim 1, wherein the stirring temperature in the step (4) is 75-85 ℃ and the stirring time is 20-40min, and the mass percentage of the ammonia water in the step (5) is 0.5-1.5% and the adding amount is 2-3mL.
  8. 8. The preparation method according to claim 1, wherein the mass ratio of the volume of cinnamaldehyde in the step (7) to the mass of mica in the step (1) is 0.02-0.05ml:50g.
  9. 9. The highly hydrophobic mica-cinnamaldehyde composition prepared by the method of any one of claims 1 to 8.
  10. 10. Use of the highly hydrophobic mica-cinnamaldehyde composition prepared by the preparation method of any one of claims 1 to 8 in the preparation of cosmetics.

Description

High-hydrophobicity mica-cinnamaldehyde composition and preparation method and application thereof Technical Field The invention relates to the technical field of fine chemical engineering and composite materials, in particular to a highly hydrophobic mica-cinnamaldehyde composition, and a preparation method and application thereof. Background The powder raw material is widely applied to cosmetics, especially to make-up, beauty and sun protection cosmetics. The powder is used for cosmetic and has the main purposes of penetrating into the surface skin to achieve various beautifying effects of brightening skin color, covering wrinkles and the like. The raw materials of the powder for cosmetics are classified into coloring pigment, white pigment, extender pigment and pearlescent pigment. Wherein the extender pigment comprises inorganic powder, organic powder and natural powder. Inorganic powder is commonly used in cosmetics, mainly comprises mica, talcum powder, kaolin, silicon dioxide, aluminum oxide and the like, and generally has the functions of covering, slipping, absorbing oil, extending, sun protection and the like. The mica has strong adhesion, good covering power and dispersibility, moderate gloss and soft and moist feel, and can be well added into a cosmetic formula to improve the quality and appearance of the product, so that the mica has wide application in color cosmetics. However, natural mica has hydrophilic hydroxyl and other structures on the surface, is easy to agglomerate, has poor compatibility with high polymer, is difficult to disperse in organic medium, has poor compatibility, is not waterproof and sweat-proof, ensures that the makeup is not durable, and has limitation on the application of makeup. In order to improve this phenomenon, it is important to perform surface modification treatment on the mica powder. Through surface modification, the properties of the mica can be improved, so that the mica has excellent water resistance, oleophilic property and compatibility, enhanced stability, dispersibility and adhesion, and can meet the application requirements of make-up and the requirements of consumers. Mica is used as inorganic powder commonly used in cosmetics and has certain ultraviolet absorption capacity, but only plays a weak ultraviolet protection role by virtue of physical scattering, so that the actual requirement of the sun-proof cosmetics cannot be met. The micromolecular sun-screening agent can be stably loaded on the surface of the hydrophobic mica powder through a specific reaction to prepare the combined powder with water resistance and ultraviolet absorption capacity. The combined powder not only solves the problems of easy volatilization and higher irritation of the micromolecular sun-screening agent, but also endows the mica powder with ultraviolet protection function and water-resistant and sweat-resistant function of the ultraviolet screening agent, meets the requirements of the cosmetic field on the multifunctional powder, can be applied to sun-screening foundation, sun-screening powder and other products, and obviously improves the performance of the products. There are two ways of realizing powder surface modification, namely a physical method and a chemical method. The chemical method mainly comprises two forms of surface chemical modifier and mechanochemical modification, wherein the most common mode is the surface chemical modifier. Currently, surface modifiers commonly used for fillers such as quartz powder, kaolin, mica and the like containing a large amount of silicic acid components include coupling agents, silicone oils, surfactants and the like. The coupling agent is a kind of difunctional substance which can perform physical adsorption or chemical action with the surface of the inorganic material and the organic matrix at the same time. The types of the chemical structure and the functional group can be classified into silanes, titanates, aluminates and the like. The silane coupling agent is the most representative surface chemical modifier, has large chemical combination degree with hydroxyl groups on the surfaces of mica particles, has good modification effect on mica, and can lead the mica to have good compatibility with organic matters. The related patent documents: publication No. CN118078655A, publication date 2025.01.14, which discloses a highly hydrophobic cosmetic-grade mica material and a method for preparing the same. The preparation method of the high-hydrophobicity cosmetic-grade mica material comprises the steps of dispersing mica into DMF, mixing the mica with a silane coupling agent mixture, condensing, refluxing and heating the mixture, mixing the system with water, heating and refluxing the mixture to realize mica modification, and finally filtering, washing and drying the mixture to obtain the high-hydrophobicity cosmetic-grade mica material. According to the invention, the silane coupling agent KH550 is taken as a main modifier, at le