Patent ID: 7192542

Claim:
A process for encapsulating one or more oily substances and hydrophobic materials comprising the steps of: (a) milling one or more hollow sphere polymers prepared from latex polymer particles having a particle size from 0.1 to 0.6 microns, and comprising a shell portion prepared by one or more steps selected from: (i) polymerization to incorporate from 4 to 80 percent monomeric units, based on total weight of the shell portion, of one or more polyethylenically unsaturated monomers; and (ii) polymerization to incorporate from 4 to 80 percent monomeric units, based on total weight of the shell portion, of one or more multifunctional monomers having at least one functional group capable of vinyl copolymerization and at least one functional group capable of reaction with a reactive molecule effective to produce post-polymerization cross-linking; (b) contacting the milled polymers with one or more oily substances and hydrophobic materials to form a powder; and (c) incorporating said powder into a cosmetic, sunscreen or hair care product; wherein said one or more oily substances and hydrophobic materials comprise at least one fragrance.