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Sunscreen emulsion containing nanocellulose and preparation method thereof

A nanocellulose, sunscreen lotion technology, applied in skin care preparations, pharmaceutical formulations, cosmetic formulations, etc., can solve problems such as unsatisfactory safety, stability, reduced sunscreen effect, skin allergies, etc., to improve sunscreen. effect, moisturizing effect, effect that does not fall off easily

Inactive Publication Date: 2019-02-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is a physical sunscreen or a chemical sunscreen, its safety and stability are not ideal. For example, the fine particles in the physical sunscreen will fall off after a period of use, reducing the sunscreen effect. The chemical components in the chemical sunscreen Can cause skin allergies and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This example provides a sunscreen lotion containing nanocellulose and a preparation method thereof.

[0040] A sunscreen lotion containing nanocellulose, consisting of the following raw materials by weight percentage: 40% nanocellulose, 6% propylene glycol, 1% olive oil, 4% stearic acid, 5% vaseline, 3% glycerin, oxidized Zinc 0.2%, Soybean Lecithin 3%, Vitamin A Fatty Acid Fatty Acid 0.1%, Sericin 0.8%, Platinum Platinum Methyl 0.4%, Hyaluronic Acid 3%, Squalane 4%, Fragrance 0.1%, Butylated Hydroxytoluene 0.06% and deionized water 29.34%.

[0041] The preparation method of the above-mentioned sunscreen lotion containing nanocellulose comprises the following steps:

[0042] (1) Preparation of nanocellulose gel: Dissolve microcrystalline cellulose in water at a mass ratio of 1:20, homogenize in a high-pressure homogenizer, homogenize at a pressure of 20,000 psi, and cycle for 6 times to obtain a cellulose solution. Calcium chloride solution is added for bridging (the ...

Embodiment 2

[0047] This example provides a sunscreen lotion containing nanocellulose and a preparation method thereof.

[0048]A sunscreen lotion containing nanocellulose, consisting of the following raw materials by weight percentage: 50% nanocellulose, 6% propylene glycol, 3% olive oil, 6% stearic acid, 4% vaseline, 3% glycerin, oxidized Zinc 0.5%, diacetyl tartrate monoglyceride 4%, vitamin C phosphate 0.1%, sericin 1.2%, niplatin ethyl 0.3%, hyaluronic acid 2%, squalane 5%, essence 0.3%, butyl Hydroxytoluene 0.1% and deionized water 14.5%.

[0049] The preparation method of the above-mentioned sunscreen lotion containing nanocellulose comprises the following steps:

[0050] (1) Preparation of nanocellulose gel: Dissolve microcrystalline cellulose in water at a mass ratio of 1:20, homogenize in a high-pressure homogenizer, homogenize at a pressure of 30,000 psi, and circulate twice to obtain a cellulose solution. Magnesium chloride solution is added for bridging (the added amount is ...

Embodiment 3

[0055] This example provides a sunscreen lotion containing nanocellulose and a preparation method thereof.

[0056] A sunscreen lotion containing nanocellulose, which is composed of the following raw materials by weight percentage: 20% nanocellulose, 5% propylene glycol, 2% olive oil, 3% stearic acid, 2% petrolatum, 4% glycerin, oxidation Zinc 0.4%, Sorbitol Fat 3%, Vitamin E Acetate 0.2%, Sericin 1.4%, Platinum Propyl 0.1%, Hyaluronic Acid 2%, Squalane 6%, Fragrance 0.2%, Butylated Hydroxytoluene 0.07% and deionized water 50.63%.

[0057] The preparation method of the above-mentioned sunscreen lotion containing nanocellulose comprises the following steps:

[0058] (1) Preparation of nanocellulose gel: Dissolve microcrystalline cellulose in water at a mass ratio of 1:20, homogenize in a high-pressure homogenizer, homogenize at a pressure of 25,000 psi, and circulate 4 times to obtain a cellulose solution. Add sodium chloride solution for bridging (the added amount is 5% of t...

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Abstract

The invention belongs to the technical field of preparation of cosmetics, and particularly relates to a sunscreen emulsion containing nanocellulose and a preparation method thereof. The sunscreen emulsion has the characteristics of that by utilizing the nanocellulose, the length-diameter ratio is high, the specific surface area is high, the diameter is smaller than 100 nm and is far smaller than the wavelength of ultraviolet rays, and therefore the sun-screening effect of the sunscreen emulsion is remarkably improved, and the SPF value of the sunscreen emulsion reaches 45-60 nm; the surface ofthe nanocellulose also contains a large amount of hydroxyl groups, the hydroxyl groups and polar components in the emulsion can form hydrogen bonds and can be combined stably in the sunscreen emulsion, and therefore the problem that particles in a traditional physical sunscreen emulsion fall off can be solved; and meanwhile, the nanocellulose is nano-particles prepared by carrying out chemical ormechanical treatment on natural plant fibers, no damage is caused to the skin, the hydroxyl groups on the surface of the cellulose is excellent in hydrophily and water absorbing and moisturizing performance, and therefore, and an obvious hydrating effect is further achieved after the sunscreen emulsion with the nano-cellulose is added.

Description

technical field [0001] The invention belongs to the technical field of preparation of cosmetics, and in particular relates to a sunscreen lotion containing nanocellulose and a preparation method thereof. Background technique [0002] Sunlight contains a lot of ultraviolet rays, and prolonged exposure to the sun will cause skin damage, causing symptoms such as skin erythema, edema, and skin aging. According to the length of the wavelength, ultraviolet rays can be divided into three types: ultraviolet rays in the UVA region (long waves), ultraviolet rays in the UVB region (medium waves) and ultraviolet rays in the UVC region (short waves). Among them, the ultraviolet energy in the UVC area is the highest, but it can be absorbed by the ozone layer and has little effect on the human body. What really causes skin damage is the ultraviolet rays in the UVA area and UVB area. In order to reduce the damage of ultraviolet rays to human skin in daily life, the current common sun prot...

Claims

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Application Information

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IPC IPC(8): A61K8/27A61K8/31A61K8/34A61K8/36A61K8/37A61K8/55A61K8/64A61K8/67A61K8/73A61K8/92A61Q17/04A61Q19/00
CPCA61K8/27A61K8/31A61K8/345A61K8/361A61K8/37A61K8/553A61K8/64A61K8/671A61K8/731A61K8/735A61K8/922A61Q17/04A61Q19/00
Inventor 王习文董凯辉
Owner SOUTH CHINA UNIV OF TECH
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