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Hybrid microsphere with functions of reflecting, scattering and absorbing ultraviolet rays and applications of hybrid microsphere

A technology of hybrid microspheres and microspheres, which is applied in the direction of cosmetics, cosmetic preparations, dressing preparations, etc., can solve the problem of only reflecting and scattering ultraviolet rays, and achieve the effect of increasing the surface area and large specific surface

Active Publication Date: 2017-11-24
广州玮弘祺生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing sunscreen products only have the effect of a single type of sunscreen, either only absorbing ultraviolet rays or only reflecting and scattering ultraviolet rays. Market value

Method used

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  • Hybrid microsphere with functions of reflecting, scattering and absorbing ultraviolet rays and applications of hybrid microsphere
  • Hybrid microsphere with functions of reflecting, scattering and absorbing ultraviolet rays and applications of hybrid microsphere
  • Hybrid microsphere with functions of reflecting, scattering and absorbing ultraviolet rays and applications of hybrid microsphere

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1, hybrid microsphere 1

[0055] The preparation method of hybrid microsphere 1 is as follows:

[0056] Ethylhexyl methoxycinnamate wrapped by mesoporous silica microspheres, the raw materials are as follows: 30g ethylhexyl methoxycinnamate, 50g ethyl orthosilicate, 3g sodium lauryl sulfate; preparation method : Ethylhexyl methoxycinnamate and ethyl orthosilicate are mixed to form an oil phase, which is added to an aqueous phase with a sodium lauryl sulfate content of 1 wt%; 20000rpm homogenization for 20min to obtain a uniformly emulsified emulsion; Adjust the pH of the emulsion to 9.5 with 24% ammonia water, stir and react at 200 rpm at room temperature for 24 hours; centrifuge at 18,000 g to collect the precipitate, and wash the precipitate to obtain ethylhexyl methoxycinnamate wrapped in mesoporous silica microspheres;

[0057] The suspension of ethylhexyl methoxycinnamate wrapped in mesoporous silica microspheres was placed at 45°C high temperature and ...

Embodiment 2

[0059] Embodiment 2, hybrid microsphere 2

[0060] The preparation method of hybrid microsphere 2 is as follows:

[0061] Silicon fully coated ethylhexyl methoxycinnamate, its raw materials are as follows: 30g ethylhexyl methoxycinnamate, 50g ethyl orthosilicate, 3g sodium lauryl sulfate, 20g gamma-glycidyl ether oxygen Propyltrimethoxysilane, 100mL absolute ethanol; preparation method: mix ethylhexyl methoxycinnamate and ethyl orthosilicate to form an oil phase, add to water with a sodium lauryl sulfate content of 1wt% In the phase; 20000rpm homogenization for 20min to obtain a uniformly emulsified emulsion; adjust the pH of the emulsion to 9.5 with 24% ammonia water, stir and react at 200rpm at room temperature for 24h; centrifuge at 18000g to collect the precipitate and wash the precipitate; the precipitate is deionized Resuspend in water to a solid content of 10%, add γ-glycidyl etheroxypropyl trimethoxysilane, absolute ethanol, 75 ° C water bath for 24 hours, centrifuge ...

Embodiment 3

[0068] Embodiment 3, hybrid microsphere 3

[0069] The preparation method of hybrid microsphere 3 is as follows:

[0070] Mesoporous silica microsphere-wrapped benzophenone-3, its raw materials are as follows: 13g benzophenone-3, 27g tetraethyl orthosilicate, 2.1g fatty alcohol polyoxyethylene ether (3) sulfosuccinic acid monoester di Sodium; preparation method: mix benzophenone-3 and ethyl orthosilicate to form an oil phase, and add it to the water phase with a content of 1 wt% of disodium sulfosuccinate monoester of fatty alcohol polyoxyethylene ether (3); Homogenize at 20,000 rpm for 20 minutes to obtain a uniformly emulsified emulsion; adjust the pH of the emulsion to 8 with 24% ammonia water, and stir at 200 rpm for 24 hours at room temperature; centrifuge at 18,000 g to collect the precipitate and wash the precipitate to obtain the mesoporous silica microsphere package Benzophenone-3;

[0071] The suspension of benzophenone-3 wrapped in mesoporous silica microspheres w...

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Abstract

The invention discloses a hybrid microsphere with the functions of reflecting, scattering and absorbing ultraviolet rays and applications of the hybrid microsphere. The hybrid microsphere disclosed by the invention belongs to an innovation in the wrapping technology, according to the structure of the hybrid microsphere, numerous sun-proof particles with the nano-scale particle sizes are used as the outer layer and wrap a carrier microsphere with the micron-scale particle size, the structure enables the hybrid microsphere to have a concave-convex surface for light reflection and scattering, the surface area of the microsphere is increased, meanwhile, the function of absorbing ultraviolet rays can be realized by utilizing the sun-proof particles of the outer layer, and the hybrid microsphere belongs to the hybrid microsphere with physical and chemical double sun-screening effects, and can be used for preparing a sun-screening product. The hybrid microsphere disclosed by the invention can realize large specific surface and can wrap a sun-screening agent as much as possible, and the problem that the surface area of an existing core-shell type particle is inversely proportional to the particle size of the particle is solved.

Description

technical field [0001] The invention relates to the field of sunscreen preparation, and more specifically relates to a hybrid microsphere with functions of reflecting, scattering and absorbing ultraviolet rays and its application. Background technique [0002] Hybrid microspheres refer to microspheres with new properties composed of two or more microspheres or particles with different physical or chemical properties. In addition to the relevant properties of various constituent microspheres or particles, hybrid microspheres will also produce some new synergistic effects, making the overall performance of hybrid microspheres better than the original constituent microspheres or particles, thus adapting to different application fields needs. [0003] Sunscreens can be divided into physical sunscreens and chemical sunscreens. Physical sunscreens use sunscreens to reflect or scatter ultraviolet rays to reduce the amount of ultraviolet rays reaching the skin, so as to achieve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/11A61K8/37A61K8/35A61Q17/04
CPCA61K8/11A61K8/35A61K8/37A61Q17/04
Inventor 曾献生
Owner 广州玮弘祺生物科技有限公司
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