Hydrophobic polysaccharide microspheres, preparation method thereof and cosmetics

A technology of hydrophobicity and hydrophobicity modification, which is applied in cosmetics, cosmetic preparations, dressing preparations, etc. It can solve the problems of poor hydrophobicity of natural polysaccharide microspheres and achieve a smooth and delicate hand feeling

Pending Publication Date: 2022-07-05
에이앤에이치인터내셔널코스메틱스
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[0004] This application provides a hydrophobic polysaccharide microsphere, its preparation method and

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  • Hydrophobic polysaccharide microspheres, preparation method thereof and cosmetics

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[0024] Preparation of Hydrophobic Polysaccharide Microspheres

[0025] An embodiment of the first aspect of the present application provides a method for preparing hydrophobic polysaccharide microspheres, which includes the following steps: providing polysaccharide microspheres made of natural polysaccharide materials; the hydrophobic modification step includes mixing a lauroyl lysine solution with the prepared polysaccharide microspheres. The polysaccharide microspheres are contacted so that lauroyl lysine is bound to at least part of the surface of the polysaccharide microspheres to obtain hydrophobic polysaccharide microspheres.

[0026] Natural polysaccharide microspheres are a class of natural polysaccharide materials with the advantages of being renewable, biodegradable, safe and pollution-free, chemically stable, easy to modify, and biocompatible, such as cellulose, chitin, and chitosan. Wait. Compared with inorganic microspheres and organic polymer microspheres, natu...

Embodiment 1

[0057] The preparation method of the hydrophobic polysaccharide microspheres provided in this embodiment comprises the following steps:

[0058] Dissolve 0.2g lauroyl lysine powder in 39.8g sodium carbonate / sodium bicarbonate buffer solution (pH range 9-10); disperse 2g cellulose ball powder in 38g citric acid / sodium citrate buffer solution (pH range 9-10); Range 4-5), add 0.6g sodium chloride aqueous solution (30% mass concentration), stir at 600rpm for 1h; slowly add lauroyl lysine solution (drop rate 0.5g / min) to the cellulose microsphere dispersion liquid, After the dropwise addition, stirring was continued for 1 h; deionized water was centrifuged, the precipitate in the system was washed three times, and cellulose microspheres modified with lauroyl lysine were obtained after freeze-drying.

Embodiment 2

[0060] The preparation method of the hydrophobic polysaccharide microspheres provided in this embodiment comprises the following steps:

[0061] Dissolve 0.5g lauroyl lysine powder in 39.5g borax / sodium hydroxide buffer solution (pH range 9-10); disperse 3g chitosan microsphere powder in 37g citric acid / sodium citrate buffer solution ( pH range 4-5), add 0.6g magnesium chloride aqueous solution (20% mass concentration), stir at 300rpm for 1h; slowly add lauroyl lysine solution dropwise to the chitosan microsphere dispersion (drop rate 0.3g / min), After the dropwise addition was completed, stirring was continued for 1 h; the precipitate in the system was obtained by suction filtration, washed with deionized water three times, and freeze-dried to obtain lauroyl lysine-modified chitosan microspheres.

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Abstract

The invention relates to hydrophobic polysaccharide microspheres, a preparation method thereof and cosmetics. The method comprises the following steps: providing polysaccharide microspheres prepared from a natural polysaccharide material; and a hydrophobic modification step: contacting a lauroyl lysine solution with the polysaccharide microspheres so that lauroyl lysine is bonded to at least part of the surfaces of the polysaccharide microspheres to obtain the hydrophobic polysaccharide microspheres. After the polysaccharide microspheres are subjected to hydrophobic modification by adopting lauroyl lysine as a hydrophobic modification reagent, the polysaccharide microspheres have hydrophobicity, and the problem of hydrophilicity of common cellulose can be solved, so that the polysaccharide microspheres can be applied to an oil-soluble system. The natural polysaccharide microspheres subjected to hydrophobic modification by lauroyl lysine not only are endowed with good hydrophobicity, but also can keep smooth skin feeling, and have great potential in the field of cosmetics.

Description

technical field [0001] The application belongs to the technical field of cosmetics, and in particular relates to a hydrophobic polysaccharide microsphere, its preparation method and cosmetics. Background technique [0002] Natural polysaccharides are biological macromolecules synthesized by organisms, located in cell walls, intracellular, intercellular and extracellular secretions, and are essential components of life activities. Natural polysaccharide microspheres are a kind of natural polysaccharide material with the advantages of renewable, biodegradable, safe and non-polluting, chemically stable, easy to modify, and good biocompatibility. [0003] As a material of natural origin, natural polysaccharide microspheres have attracted more and more attention in cosmetic products. Since the functional groups on the surface of the microspheres are hydrophilic groups, they generally have relatively good hydrophilicity, but poor hydrophobicity, which makes it easy for makeup to ...

Claims

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Application Information

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IPC IPC(8): C08B15/06C08J7/14C08L1/02A61K8/02A61K8/73A61Q19/00
CPCC08B15/06C08J7/14A61K8/731A61K8/736A61K8/025A61Q19/00C08J2301/02A61K2800/10
Inventor 田勇沈洁袁菊懋张鑑锋周立晓牟沛松田云才江忠梅余涛
Owner 에이앤에이치인터내셔널코스메틱스
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