Surface-treated powders and cosmetic compositions in which such powders are mixed
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United States of America Patent
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Mar 21, 2017
Grant Date -
Aug 13, 2015
app pub date -
Dec 26, 2012
filing date -
Dec 26, 2012
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Abstract
The invention is directed to the cosmetic powder surface-treated with a silicone gel, wherein the surface treatment with the silicone gel affords excellent water repellency, the exhibits smooth and light touch, and affords moist usability peculiar to the silicone gel and excellent adhesion to skin for the cosmetic powder. The powder is an inorganic powder, an organic powder or a composite powder thereof. The silicone gel is obtained by hydrolysis and condensation reacting an organopolysiloxane containing at least a diorganopolysiloxane having reactive opposite ends shown in the following formula (1) and a silane coupling agent having the following formula (2) with at least two hydrolyzable groups in one molecule or a reactive polysiloxane of the following formula (3) as a crosslinking agent. (1) R1R22SiO—(R22SiO)L—SiR1R22; (2) R3R4nSiX(3-n); and (3) R53SiO—(R52SiO)n-SiR53.
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