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Organic-inorganic self-assembled ultraviolet absorbent and preparation method thereof

An ultraviolet absorber and an assembly-type technology, which are applied in the field of organic-inorganic self-assembled ultraviolet absorbers and their preparation, can solve the problems of loss of sunscreen effect and low level, and achieve the effect of good ultraviolet blocking effect, reducing dosage and improving performance.

Inactive Publication Date: 2013-03-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if Parsol-1789 is used alone, its light fastness or photostability (that is, resistance to visible light and ultraviolet rays in sunlight, especially the property of not decomposing under ultraviolet irradiation) is not high, and it will gradually be decomposed and lost after being exposed to ultraviolet rays. sun protection effect

Method used

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  • Organic-inorganic self-assembled ultraviolet absorbent and preparation method thereof
  • Organic-inorganic self-assembled ultraviolet absorbent and preparation method thereof
  • Organic-inorganic self-assembled ultraviolet absorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: Get 2 grams of butylmethoxydibenzoyl methane (Parsol-1789) and 10 grams of nano-zinc oxide (hydrophilic) and 0.2 grams of surfactant: long-chain alkyl (C 12 ) Fatty alcohol poly(n:7) oxyethylene ether, after mixing, add 30 grams of absolute ethanol, heat to 50°C to dissolve, keep warm and stir for 30 minutes, so that the organic and inorganic phases can be uniformly dispersed and dissolved, and after chemical self-assembly is completed, After concentration and filtration, the solvent was removed and dried to obtain 11.2 g of the desired organic-inorganic chemical self-assembled ultraviolet absorber (PZ-171). After elemental and chemical analysis, it can be known that organic and inorganic chemical self-assembled UV absorber (PZ-171) contains 11.3% of butylmethoxydibenzoylated methane (Parsol-1789), 87.9% of nano-zinc oxide, and 0.1% of surfactant , 0.7% water. see figure 1 , it can be seen from the figure that the ultraviolet absorption spectrum of the c...

Embodiment 2

[0055] Embodiment 2: Get 2 grams of butylmethoxydibenzoyl methane (Parsol-1789) and 10 grams of nano-zinc oxide (lipophilic) and 0.2 grams of surfactant: long-chain alkyl (C 12 ) Fatty alcohol poly(n:7) oxyethylene ether, after mixing, add 30 grams of absolute ethanol, heat to 50°C to dissolve, keep warm and stir for 30 minutes, so that the organic and inorganic phases can be evenly dispersed and dissolved and chemical self-assembly is completed , cooled to room temperature, concentrated and filtered, the solvent was removed and then dried to obtain 11.3 grams of the desired organic-inorganic chemical self-assembled UV absorber (PZ-172). After elemental and chemical analysis, it was known that organic-inorganic chemical self-assembled The ultraviolet absorber (PZ-172) contains 11.5% of butylmethoxydibenzoyl methane (Parsol-1789), 88.1% of nano zinc oxide, 0.1% of surfactant, and 0.3% of water. see figure 2 , it can be seen from the figure that the UV absorption spectrum of t...

Embodiment 3

[0056] Embodiment 3: Get 2 grams of butylmethoxydibenzoyl methane (Parsol-1789) and 10 grams of nano-titanium dioxide (hydrophilic) and 0.2 grams of surfactant: long-chain alkyl (C 12-14 ) Fatty alcohol poly(n:9) oxyethylene ether, after mixing, add 30 grams of absolute ethanol, heat to 50 ° C to dissolve, keep warm and stir for 40 minutes, so that the organic and inorganic phases can be uniformly dispersed and dissolved, and the chemical self-dissolution is completed. After assembly, the solvent was removed by concentration and filtration, and then dried to obtain 11.3 g of the desired organic-inorganic chemical self-assembled UV absorber (PC-172). After elemental and chemical analysis, it can be seen that organic and inorganic chemical self-assembled UV absorbers (PC-172) contain 11.2% of butylmethoxydibenzoylated methane (Parsol-1789), 88.2% of nano-titanium dioxide, and 0.1% of surfactants. Water 0.5%.

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Abstract

The invention relates to an organic-inorganic self-assembled ultraviolet absorbent and a preparation method thereof. The absorbent comprises the following components in percentage by mass: 1 to 20 percent of organic ultraviolet absorbent, 86 to 88 percent of inorganic ultraviolet absorbent, 0.01 to 1.00 percent of surfactant, and 0.1 to 5.0 percent of solvent. By utilizing the property of a mesoporous reagent and a self-assembly technology, the organic ultraviolet absorbent and the inorganic ultraviolet absorbent are subjected to chemical self-assembly in a certain mass proportion under certain conditions, and the prepared organic-inorganic self-assembled ultraviolet absorbent has better ultraviolet blocking effect, the dosage can be reduced and the performance can be improved.

Description

technical field [0001] The invention relates to an ultraviolet absorber and a preparation method thereof, in particular to an organic-inorganic self-assembled ultraviolet absorber and a preparation method thereof. Background technique [0002] With the increasing destruction of the atmospheric environment, the threat of ultraviolet rays to people is also increasing. Adding sunscreens to cosmetics to prevent and reduce the damage of ultraviolet rays to human body is the development trend of cosmetics in the world in recent years. Now most of them are organic UV absorbers, but their protective effect is not obvious especially in the UVA area. With the research on the properties of nanomaterials such as nano-titanium dioxide, zinc oxide and other oxides, it is found that these nano-oxides have unique properties that organic sunscreens do not have. Agents are safer. However, nano-oxides also have certain disadvantages when they are used as UV shielding agents. Therefore, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/86A61K8/49A61K8/46A61K8/33A61K8/37A61K8/29A61K8/27A61Q17/04
Inventor 章建民唐岑赵浏陈瑛章巧琳周雯
Owner SHANGHAI UNIV
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