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Highly safe light wave blocking agent, preparation method and sunscreen spray containing the light wave blocking agent

A technology of sunscreen spray and blocking agent, which can be applied to medical formulations, pharmaceutical formulations, cosmetic formulations, etc. containing active ingredients, can solve problems such as damage to skin health, and achieve the effect of excellent anti-ultraviolet and blue light effects.

Active Publication Date: 2021-05-25
SHANGHAI MINGMEI BIO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the long-term use of titanium dioxide as a light wave blocker in sunscreen sprays is detrimental to skin health, the purpose of the present invention is to provide a light wave blocker with high safety, which is safer than titanium dioxide, and has long-term use on the skin. little impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A light wave blocking agent with high safety. The light wave blocking agent is a composite particle composed of an inner core and an outer shell covering the inner core, wherein the inner core is an aqueous dispersion of cerium oxide, and the outer shell is a platinum layer; It is prepared by coating the surface of cerium oxide aqueous dispersion after reacting with sodium hydroxide.

[0034] A preparation method of the above-mentioned light wave blocking agent, comprising the following steps:

[0035] (1) Add 1.3mol / L sodium hydroxide solution dropwise to 100g of cerium oxide particles within 40min at a rate of 1 drop / s at 25°C, with a stirring rate of 4000rpm, and then vibrate for 60min with closed ultrasonic to obtain a mixed system. Frequency 60KHz;

[0036] (2) Raise the temperature of the mixed system to 90°C, and add the chloroplatinic acid solution dropwise to the mixed system within 80 minutes under 60KHz ultrasonic-assisted stirring to form precipitated parti...

Embodiment 2

[0042] A light wave blocking agent with high safety. The light wave blocking agent is a composite particle composed of an inner core and an outer shell covering the inner core, wherein the inner core is an aqueous dispersion of cerium oxide, and the outer shell is a platinum layer; It is prepared by coating the surface of cerium oxide aqueous dispersion after reacting with sodium hydroxide.

[0043] A preparation method of the above-mentioned light wave blocking agent, comprising the following steps:

[0044] (1) Add 1 mol / L sodium hydroxide solution dropwise to 100 g of cerium oxide particles within 60 min at a rate of 2 drops / s at 30 °C, with a stirring rate of 5000 rpm, and then vibrate in a closed ultrasonic wave for 120 min to obtain a mixed system. 200KHz;

[0045] (2) Raise the temperature of the mixed system to 100° C., and add the chloroplatinic acid solution dropwise to the mixed system within 60 minutes under ultrasonic-assisted stirring at a frequency of 200 KHz t...

Embodiment 3

[0052] A light wave blocking agent with high safety. The light wave blocking agent is a composite particle composed of an inner core and an outer shell covering the inner core, wherein the inner core is an aqueous dispersion of cerium oxide, and the outer shell is a platinum layer; It is prepared by coating the surface of cerium oxide aqueous dispersion after reacting with sodium hydroxide.

[0053] A preparation method of the above-mentioned light wave blocking agent, comprising the following steps:

[0054] (1) Add 1.6mol / L sodium hydroxide solution dropwise to 100g of cerium oxide particles within 80min at a rate of 3 drops / s at 35°C, with a stirring rate of 6000rpm, and then vibrate in a closed ultrasonic wave for 100min to obtain a mixed system, and ultrasonically Frequency 400KHz;

[0055] (2) Raise the temperature of the mixing system to 95°C, and add the chloroplatinic acid solution dropwise to the mixing system within 90 minutes under ultrasonic-assisted stirring at ...

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Abstract

The invention belongs to the technical field of sunscreen spray cosmetics. Aiming at the problem that titanium dioxide is used as a light wave blocker in current sunscreen sprays to accelerate skin aging, it discloses a highly safe light wave blocker, a preparation method and a sunscreen spray containing the light wave blocker. The light wave blocking agent is made by reacting chloroplatinic acid with sodium hydroxide and coating the surface of the cerium oxide aqueous dispersion. It has a composite particle structure with an aqueous dispersion of cerium oxide in the inner core and a platinum layer in the outer shell. The solvent also contains the amphiphilic tetrahydromethylpyrimidinecarboxylic acid. The light wave blocking agent of the present invention has no ultraviolet photocatalytic activity, and has the blocking performance of ultraviolet light in the full wavelength range, and the cerium oxide particles are uniformly dispersed and are not easy to agglomerate, and the sunscreen spray obtained therefrom can use water as a solvent, and the light wave blocking agent can be mixed with four Hydromethylpyrimidine carboxylic acid works synergistically, which is safer than sunscreen sprays containing titanium dioxide, and has better UV protection effect.

Description

technical field [0001] The invention belongs to the technical field of sunscreen spray cosmetics, and in particular relates to a highly safe light wave blocking agent, a preparation method and a sunscreen spray containing the light wave blocking agent. Background technique [0002] Ultraviolet light is an electromagnetic wave with a wavelength of 10-400nm. According to the wavelength, it can be divided into the UVC segment of 200-280nm, the UVB segment of 280-320nm and the UVA segment of 320-400nm. Among them, the UVC segment and ultraviolet rays with shorter wavelengths are basically absorbed by the ozone layer. , while the UVB band has medium penetrating power, less than 2% can reach the surface of the earth, can be absorbed by the epidermis of the skin, and can cause strong light damage to the skin. , Long-term exposure to the skin will cause erythema, inflammation, and skin aging. The ultraviolet rays in the UVA segment are far more penetrating to clothing and human ski...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/19A61K8/04A61K8/49A61P17/04
CPCA61K8/046A61K8/19A61K8/4953A61K2800/56A61K2800/592A61K2800/621A61K2800/651A61P17/04
Inventor 朱国君张永胜王菁罗晓丹
Owner SHANGHAI MINGMEI BIO TECH CO LTD
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