Selenium sulfide nano particle additive preparing method and use

Abstract

The present invention discloses the preparation process of nanometer selenium sulfide particle additive including selecting precursor material and controlling reactor temperature and other technological parameters. Further, the prepared nanometer selenium sulfide particle additive is applied in shampoo and other products for treating scurf, seborrheic dermatitis, tinea versicolor, etc. Owing to the characteristic of nanometer particle with great specific surface area, small amount of nanometer selenium sulfide particle additive can result in obvious curative effect.

Description

technical field [0001] The invention relates to a method for preparing nanoparticles, in particular to a method for preparing a selenium sulfide nanoparticle additive and its application. Background technique [0002] Selenium sulfide has a good antibacterial effect, so it is known that commercially available skin care products or cleaning products doped with selenium sulfide are suspended and dispersed in water-insoluble selenium sulfide powder in the basic ingredients of skin care products or cleaning products to serve as an antibacterial agent. The main raw material of pharmaceutical products such as dandruff, treatment of seborrheic dermatitis, tinea versicolor or scalp ringworm. [0003] Although skin care products or cleaning products containing selenium sulfide are effective in inhibiting cell division, dissolving keratin, removing oil and killing Malassezia furfur (Pityrosporum ovale), the currently used Selenium sulfide, whose particle size is micron or larger, is ...

AI Technical Summary

Problems solved by technology

[0003] Although skin care products or cleaning products containing selenium sulfide are effective in inhibiting cell division, dissolving keratin, removing oil and killing Malassezia furfur (Pityrosporum ovale), the currently used Selenium sulfide, whose particle size is micron or larger, is extremely difficult to disperse, and additional suspension and dispersant ingredients need to be added; and even if it can be uniformly dispersed, it is still easy to precipitate after a period of standing Selenium sulfide particles

Further, according to the medicated cosmetics standard "other categories" published by the Taiwan Department of Health on March 2, 1993, when selenium sulfide is used in shampoos, the limit is 0.5%, but the particle size of selenium sulfide on the market today is In terms of size, in order to achieve effective bacteriostatic strength, the shampoo needs 01-0.5% by weight to be effective, but 0.5% by weight has reached the upper limit of use stipulated by the Department of Health

Moreover, selenium sulfide is irritating to human hair follicles and mucous membranes, and there are concerns about dryness and color residue after washing. These are undoubtedly not potential dangers in the use of selenium sulfide-containing products.

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