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Sunscreen moisturizing lotion and preparing method and application thereof

A technology of carboxymethyl chitosan and nano-titanium dioxide, applied in the field of sunscreen moisturizing milk and its preparation, to achieve the effect of protecting fibroblasts, scavenging free radicals, and overcoming agglomeration

Inactive Publication Date: 2017-01-04
王少琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] How to rationally modify titanium dioxide and chitosan, and combine the advantages of both to prepare new, effective and safe sunscreens is an unsolved problem.

Method used

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  • Sunscreen moisturizing lotion and preparing method and application thereof
  • Sunscreen moisturizing lotion and preparing method and application thereof
  • Sunscreen moisturizing lotion and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A sunscreen moisturizer, comprising the following components by parts by mass:

[0052]

[0053] The preparation method of described sunscreen moisturizing lotion comprises the following steps:

[0054] (1) The viscosity average molecular weight is 6×10 4 Chitosan and absolute ethanol were mixed according to the mass volume ratio (g:ml) of 1:30, ultrasonically treated for 15 minutes, then added with a mass fraction of 40% sodium hydroxide solution, and alkalized at 4°C for 4.5 hours; Then slowly add chloroacetic acid, stir and react at 65°C for 5h to obtain carboxymethyl chitosan with a degree of substitution of 1.45; wherein, the mass ratio of chitosan to sodium hydroxide in the sodium hydroxide solution is 1:5; The mass ratio of polysaccharide to chloroacetic acid is 1:4;

[0055](2) the carboxymethyl chitosan that step (1) is made is dissolved in water, and the carboxymethyl chitosan solution that obtains mass fraction is 15%, is that the nano titanium dioxide o...

Embodiment 2

[0061] A sunscreen moisturizer, comprising the following components by parts by mass:

[0062]

[0063] The preparation method of described sunscreen moisturizing lotion comprises the following steps:

[0064] (1) Set the viscosity-average molecular weight to 0.8×10 4 Chitosan and absolute ethanol were mixed according to the mass volume ratio (g:ml) of 1:25, ultrasonically treated for 20min, then added with a mass fraction of 45% sodium hydroxide solution, and alkalized at 10°C for 4h; then Slowly add chloroacetic acid, stir and react at 60°C for 6 hours to obtain carboxymethyl chitosan with a degree of substitution of 1.26; wherein, the mass ratio of chitosan to sodium hydroxide in sodium hydroxide solution is 1:4; chitosan The mass ratio of sugar to chloroacetic acid is 1:3;

[0065] (2) the carboxymethyl chitosan that step (1) is made is dissolved in water, and the carboxymethyl chitosan solution that obtains mass fraction is 10%, is that the nanometer titanium dioxide...

Embodiment 3

[0071] A sunscreen moisturizer, comprising the following components by parts by mass:

[0072]

[0073]

[0074] The preparation method of described sunscreen moisturizing lotion comprises the following steps:

[0075] (1) The viscosity average molecular weight is 16×10 4 Chitosan and absolute ethanol were mixed according to the mass volume ratio (g:ml) of 1:50, ultrasonically treated for 10min, then added with a mass fraction of 45% sodium hydroxide solution, and alkalized at 0°C for 5h; then Slowly add chloroacetic acid, stir and react at 70°C for 3 hours to obtain carboxymethyl chitosan with a degree of substitution of 1.36; wherein, the mass ratio of chitosan to sodium hydroxide in sodium hydroxide solution is 1:6; chitosan The mass ratio of sugar to chloroacetic acid is 1:5;

[0076] (2) the carboxymethyl chitosan that step (1) is made is dissolved in water, obtains the carboxymethyl chitosan solution that mass fraction is 20%, is that the nanometer titanium dioxi...

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Abstract

The invention belongs to the filed of cosmetics and particularly relates to a sunscreen moisturizing lotion and a preparing method and application thereof. The sunscreen moisturizing lotion is prepared from nanometer titanium dioxide-carboxymethyl chitosan composite microspheres, peach blossom extract, honeysuckle flower extract, cyclomethicone, isononyl isononanoate, glycerol, panthenol, niacinamide, cetyl alcohol, xanthan gum, methl glucse sesquistearate, glyceryl stearate, fragrance and water. According to the sunscreen moisturizing lotion and the preparing method and application thereof, the sunscreen effect of nanometer titanium dioxide and the good moisture absorbing, moisture retaining, skin moisturizing and other effects of chitosan are combined, and the problems that in a traditional sunscreen agent, nanometer titanium dioxide is likely to cluster, large in dosage and the like are solved; besides, through combination of nanometer titanium dioxide and chitosan, good synergic antibacterial and antiseptic effects are achieved, and a higher promoting effect on the stability and durability of the sunscreen moisturizing lotion is achieved. In addition, the sunscreen moisturizing lotion can absorb ultraviolet light in all wavebands at high efficiency as peach blossom extract and honeysuckle extract are included and are in scientific proportion with other components.

Description

technical field [0001] The invention belongs to the field of cosmetics, and in particular relates to a sunscreen moisturizing lotion and a preparation method and application thereof. Background technique [0002] Ultraviolet rays are one of the most harmful light waves in sunlight to the human body. Excessive exposure to ultraviolet rays will cause erythema and dark spots on the skin, aging the skin, and even cause skin cancer in severe cases. In recent years, with the improvement of people's awareness of ultraviolet rays and the enhancement of health care awareness, the development and application of sunscreen cosmetics has gradually become a scientific research hotspot. [0003] Titanium dioxide has been used as a main sunscreen agent due to its high refraction and high photoactivity. Nano-titanium dioxide has been widely valued because of its superior performance, and has been used in the research and development of new and high-quality sunscreen cosmetics, gradually sh...

Claims

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Application Information

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IPC IPC(8): A61K8/97A61K8/67A61K8/891A61K8/73A61K8/42A61K8/37A61K8/34A61K8/29A61K8/02A61Q17/04A61Q19/00A61Q19/08
CPCA61K8/29A61K8/025A61K8/342A61K8/345A61K8/37A61K8/375A61K8/42A61K8/673A61K8/73A61K8/736A61K8/891A61K8/97A61K2800/413A61K2800/782A61Q17/04A61Q19/00A61Q19/08
Inventor 王少琼
Owner 王少琼
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