CN-122005341-A - Safe sun-proof microcapsule coating composition, microcapsule coating method, cosmetic and application

Abstract

The invention provides a safe sun-proof microcapsule coating composition, a sun-proof microcapsule coating method, cosmetics and application, and belongs to the technical field of cosmetics. The sun-proof microcapsule coating composition comprises a coating medium, a coating assisting agent and a structuring agent, wherein the coating medium is lecithin, the coating assisting agent comprises at least one of polyglycerol-10 stearate, polyglycerol-10 oleate, polyglycerol-10 palmitate, polyglycerol-10 myristate, polyglycerol-10 distearate and sucrose palmitate, and the structuring agent comprises cellulose substances and ascorbyl tocopheryl phosphate potassium. The sun-screening microcapsule coating composition can better coat sun-screening agents, reduce the residues of the sun-screening agents on the skin, and has good stability.

Inventors

• LI QINYUAN
• LIU MINRUI
• LUO WEILONG

Assignees

• 广州诺元生物科技有限公司

Dates

Publication Date

20260512

Application Date

20260203

Claims (10)

1. 1. A safe sun-proof microcapsule coating composition is characterized by comprising a coating medium, a coating assisting agent and a structural agent; The coating medium is lecithin; The coating aid comprises at least one of polyglycerol-10 stearate, polyglycerol-10 oleate, polyglycerol-10 palmitate, polyglycerol-10 myristate, polyglycerol-10 distearate and sucrose palmitate; the structuring agent comprises cellulose substances and potassium ascorbyl phosphate tocopheryl ester.
2. 2. The sunscreen microcapsule coating composition according to claim 1, wherein the mass ratio of the coating medium, the co-coating agent and the structuring agent is (1-4): 1-8): 1-5.
3. 3. The sunscreen microcapsule coating composition according to claim 1, wherein the mass ratio of the cellulose substance to the potassium ascorbyl phosphate tocopheryl phosphate is (1-4): 0.1-1.
4. 4. The sunscreen microcapsule coating composition according to claim 1, wherein the lecithin comprises at least one of soy lecithin, egg yolk lecithin, hydrogenated lecithin.
5. 5. The composition of claim 1, wherein the cellulosic material comprises at least one of hydroxyethyl cellulose, hydroxypropyl methylcellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, ethyl cellulose, and microcrystalline cellulose.
6. 6. A microcapsule coating method, comprising the steps of: (1) Uniformly mixing and dispersing a substance to be coated, a coating medium and a coating assisting agent to obtain a dispersion; (2) The addition of the structuring agent to the dispersion is accomplished by high pressure microfluidic coating.
7. 7. The method according to claim 6, wherein the mass ratio of the substance to be coated, the coating medium, the co-coating agent and the structuring agent is (0.1-50): 1-4): 1-8): 1-5.
8. 8. Use of a sunscreen microcapsule coating composition according to any of claims 1-5 in cosmetics.
9. 9. Cosmetic product, characterized in that it comprises a sunscreen microcapsule coating composition according to any one of claims 1 to 5 and/or is obtained by coating by a microcapsule coating method according to any one of claims 6 to 7.
10. 10. The cosmetic product according to claim 9, characterized in that the microcapsules in the cosmetic product have a particle size of 100-1000nm.

Description

Safe sun-proof microcapsule coating composition, microcapsule coating method, cosmetic and application Technical Field The invention provides a safe sun-proof microcapsule coating composition, a sun-proof microcapsule coating method, cosmetics and application, and belongs to the technical field of cosmetics. Background The technology of coating the sun-screening agent is used as an optimization scheme for improving the safety of sun-screening products and regulating skin feel, various technical routes, such as silicon-based coating, liposome coating, microemulsion coating, polymer coating and the like, can be used for avoiding direct exposure of the sun-screening agent on the skin through coating, changing the particle size, regulating the skin feel during use, changing the forms of film formation, residence mode and the like on the surface of the skin, forming a uniform and compact sun-screening film on the surface layer of the skin, avoiding permeation and achieving better sun-screening performance, safety and use feel. Although different types of sunscreen agent wrapping technologies and schemes exist today, different defects, such as silicon-based wrapping components, good skin feel and wrapping stability, but limited wrapping amount of the sunscreen agent, high cost in the practical application level and poor compatibility, still exist aiming at the use problems in the product application. For example, liposome coating, the coating amount is low, meanwhile, the compatibility and stability of the formula are limited, and the technology under consideration can not basically meet the all-round product requirements of product stability, compatibility, safety, skin feel and the like. Chinese patent CN117695169A discloses a lipid particle containing strong electrolyte skin care functional components, which comprises, by mass, 0.1-10% of potassium ascorbyl phosphate tocopheryl, 1-10% of lecithin or hydrogenated lecithin, 0.1-10% of skin care functional components, 20-60% of a cosolvent and the balance of deionized water. The invention solves the technical problem of poor transdermal absorption of skin care functional components, and the obtained liposome has the beneficial effects of convenient use, good stability and good transdermal effect of strong electrolyte skin care functional components. The invention has the function of promoting the absorption of skin care components and can not play a role of isolating sun-screening agents. Chinese patent CN120225161a discloses a core-shell microcapsule comprising a core containing at least one active ingredient and a shell constituting the wall surrounding the core and constituting at least 20% of the total mass of the microcapsule, the shell of the microcapsule comprising at least one crosslinked polymer, preferably obtained by interfacial polymerization. The size of the microcapsules is preferably less than 1 μm. The active ingredient may be a sunscreen. The shell comprises at least one anionic surfactant and/or at least one nonionic surfactant. The anion may be hydrogenated lecithin and the nonionic surfactant may be sucrose palmitate. However, experiments have shown that only sucrose palmitate and lecithin are present, and that the sunscreens still penetrate into the skin in large amounts, forming residues. Disclosure of Invention The invention aims to provide that: A safe sun-screening microcapsule coating composition, a microcapsule coating method, cosmetics and application, and related technologies thereof are provided, so as to solve the technical problems of better coating sun-screening agent, reducing the residue of sun-screening agent on skin and the like or the combination thereof. Description of the terminology: Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the claimed subject matter belongs. All patents, patent inventions, and publications cited herein are incorporated by reference in their entirety unless otherwise indicated. If there are multiple definitions of terms herein, the definitions of this chapter shall control. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the subject matter of the invention, as claimed. In the present invention, the singular is used to include the plural unless specifically stated otherwise. It should also be noted that the use of "or" means "and/or" unless stated otherwise. Furthermore, the terms "include," as well as other forms, such as "comprising," "including," and "containing," are not limiting. The definition of standard chemical terms can be found in the reference "cosmetic safety specifications (2015 edition)". Unless specifically defined, the use of various commercially available products as used herein employs standard techniques. For example, the kit may be used by the manuf