Dispersion process of adapalene in a gel preparation
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United States of America Patent
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Jul 13, 2021
Grant Date -
Jun 27, 2019
app pub date -
Dec 21, 2018
filing date -
Dec 21, 2017
priority date (Note) -
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Abstract
A dispersion process of adapalene gel preparation, including the following steps: pulverizing adapalene raw material to D50 not more than 10 μm and D90 not more than 30 μm by dry detection; adding methyl p-hydroxybenzoate, 1,2-propanediol, carbomer 980 and disodium edetate in water, heating and stirring consistently to obtain a matrix in a uniform jelly; adding poloxamer 188, propylene glycol and ethylene glycol phenyl ether in water, stirring and heating to prepare a mixed solution; adding adapalene in the mixed solution prepared, emulsifying at a high speed, then adding to the matrix for thorough stirring; and then adding a triethanolamine aqueous solution for homogenization and stirring. The preparation prepared has good emulsifying and dispersing effect of adapalene, can be expanded on a large scale, and the industrial promotion prospect is good.
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