The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2016
Filed:
Oct. 16, 2012
Dow Global Technologies Llc, Midland, MI (US);
Rohm and Haas Company, Philadelphia, PA (US);
Fanwen Zeng, Belle Mead, NJ (US);
Charles Jones, Yardley, PA (US);
Diane Routzahn, Levittown, PA (US);
Stephen L. Wilson, Zionsville, IN (US);
Dow Global Technologies LLC, Midland, MI (US);
Rohm and Haas Chemicals LLC, Philadelphia, PA (US);
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.