Patent ID: 6774179
Filing Date: 2004-08-10
Classification: A61K,A61Q,C08J,C08L

Abstract:
A method for producing silicone particles where said method comprises emulsifying and reacting a composition comprising(I) a siloxane oligomer or polymer having units of â€ƒwhere each Y is independently selected from O (oxygen radicals); Râ€²: an alkyl group with 1 to 30 C atoms, an aryl group having 6 to 15 carbon atoms, an alkaryl group having 6 to 15 carbon atoms, and an aralkyl group having 6 to 15 carbon atoms; Z: a reactive group selected from epoxy-functional groups or chlorohydrin functional groups; Zâ€²: a functional group that reacts with epoxy-functional groups or chlorohydrin functional groups and; F: functional group other than Z or Zâ€², with the proviso that at least 50 mol % of the Y groups in the siloxane are Râ€², and there are at least two Z and/or Zâ€² groups in the siloxane;(II) a crosslinker wherein said crosslinker contains Z and/or Zâ€² groups with the proviso that when Y in siloxane (I) contains Z groups, the crosslinker contains Zâ€² groups; when Y in siloxane (I) contains Zâ€² groups, the crosslinkor contains Z groups; and when Y in siloxane (I) contains Z and Zâ€² groups, the crosslinker contains Z groups, Zâ€² groups or both; (III) at least one emulsion liquid; (IV) a surfactant; and (V) an active ingredient selected from sunscreens, fragrances, vitamins, drugs, antiperspirant salts, and &agr;-hydroxy acids.