Method for preparing nano-micro level sun-screening agent with emulsification function

A technology of emulsifying function and sunscreen, which is applied in the direction of cosmetic preparations, skin care preparations, cosmetics, etc., and can solve problems such as slowness, low disassociation rate, and small mobility of chain segments
CN101313882AInactive Publication Date: 2008-12-03JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2008-12-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method for a nano and micro sun-screening agent with emulsifying function, belonging to the photosensitive amphiphilic copolymer micelle particle preparation technical field. The method prepares the photosensitive amphiphilic copolymer micelle particle which integrates the emulsifying and sun-screening effects through self-assembly of photosensitive amphiphilic copolymer. The micelle diameters are in the nanometer range, the micelle particle can effectively absorb ultraviolet between 270 and 350 nm for photocrosslinking reaction, and can absorb the ultraviolet again when the ultraviolet is less than 260 nm after photodissociation. The micelle particle can be used as the macromolecular sun-screening agent and has the advantages of low toxicity, low permeability, good skin affinity and feeling. The copolymer micelle is not only provided with photosensitive units but also provided with hydrophilic / lyophobic microdmain, can also reduce the tension of oil-water boundary, and has the emulsifying function. The preparation method has easily obtained monomers, simple reaction conditions and high yield, can control the macromolecular micelle particle through the self-assembly technology, and has potential application value in the cosmetics and washing product field when added with the monomers provided with functional groups.
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Description

technical field

[0001] The invention relates to a preparation method of a nano-micron sunscreen agent with emulsifying function, and belongs to the technical field of preparation of photosensitive amphiphilic copolymer micelle particles. In the present invention, photosensitive amphiphilic polymer micelle particles are prepared through the "green" and "clean" self-assembly technology of the amphiphilic copolymer with photosensitivity and ionicity. The assembly is controllable, the preparation process is simple and pollution-free, and it has potential application prospects in sunscreen agents and emulsifiers of toiletries. Background technique

[0002] Ultraviolet (UVR) is a part of sunlight, originally referring to the part of invisible light with a wavelength of 190nm to 400nm. Ultraviolet rays can be divided into short-wave ultraviolet (UVC) 190nm-280nm, medium-wave ultraviolet (UVB) 280nm-320nm and long-wave ultraviolet (UVA) 320nm-400nm. Ultraviolet rays below 280nm ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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