Encapsulation of personal care actives
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United States of America Patent
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Mar 8, 2016
Grant Date -
Sep 18, 2014
app pub date -
Oct 16, 2012
filing date -
Oct 19, 2011
priority date (Note) -
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Abstract
Described are methods for encapsulating a personal care active, comprising preparing an aqueous phase, comprising partially hydrolyzed polyvinyl alcohol and a cosmetically acceptable non-ionic surfactant, preparing an oil phase, comprising the personal care active and isocyanate or polyisocyanate, homogenizing the aqueous phase and oil phase to form an emulsion with particles less than one micron, and forming a dispersion of polyurea core-shell particles containing the personal care active by contacting the emulsion with an aqueous amine solution.
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Family
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