Selenium disulfide ultrafine powder and preparation method thereof

Abstract

The invention discloses a selenium sulfide ultrafine powder and a preparing method thereof, and belongs to the field of washing products. The selenium sulfide ultrafine powder and the preparing method solve the problem that the production time of selenium sulfide ultrafine powder which is prepared through medium ball milling micronization and serves as a lotion is long, and the quality problems that selenium sulfide is large in particle, uneven in dispersion and instable. The particle size of the selenium sulfide ultrafine powder is 1-50 microns. The method includes the following steps that 1, dry selenium sulfide powder, purified water, medicine-level titanium dioxide and medicine-level glycerin are mixed to be even, and then citric acid is added to adjust the pH value to range from 3.5 to 4.5; 2, the mixture is arranged in a grinding-type ultrafine grinder to be ground and smashed, and the selenium sulfide ultrafine powder is obtained. The selenium sulfide ultrafine powder can be applied to daily chemical products such as lotions, liquid shampoo and hair conditioners.

Description

technical field [0001] The invention belongs to the field of washing products; in particular, it relates to an ultrafine powder of selenium disulfide and a preparation method thereof. Background technique [0002] Selenium disulfide is bright orange to reddish brown powder; with a faint hydrogen sulfide smell, insoluble in water, slightly soluble in chloroform, very slightly soluble in ether, basically insoluble in other organic solvents. Under sunlight, high temperature or alkaline conditions, it is easy to oxidize, deactivate and turn black; the product must be protected from light and stored in a cool, airtight container. [0003] Selenium sulfide is used to remove dandruff, seborrhea, scalp seborrheic dermatitis, tinea versicolor and so on. It is often used for external use, with 1% or 2.5% lotion applied to the scalp, 1-2 times a week to once every 4 weeks as needed. [0004] Micronization technology is a new technology derived from the 1970s to adapt to the developme...

AI Technical Summary

Problems solved by technology

[0005] The invention solves the quality problems of large selenium disulfide particles, uneven dispersion and instability in the preparation of selenium disulfide ultrafine powder as a lotion by medium ball milling micronization, shortens the production time at the same time, and provides ultra-fine selenium disulfide Micropowder and its preparation method

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