×

Delivery of hydrophobic benefit agents from bodywashes and the like onto a keratinous substrate

  • US 20100135936A1
  • Filed: 04/22/2009
  • Published: 06/03/2010
  • Est. Priority Date: 04/23/2008
  • Status: Active Grant
First Claim
Patent Images

1. A cosmetically acceptable delivery system for hydrophobic benefit agents to a keratinous substrate wherein the delivery system comprisesi.) an amphiphilic block copolymer,which amphiphilic block copolymer comprises a hydrophilic (A) block and a hydrophobic (B) block,wherein the hydrophilic block (A) comprises at least a cationic monomer unit or a potentially cationic monomer unit in the conditions of use and the unit is represented by formulae (I) or (II) wherein R1 is hydrogen or methyl, R2 is hydrogen, a branched or unbranched C1-4 alkyl, R3 and/or R4 are independently branched or unbranched C1-22 alkyl, C1-C4 alkylhydroxy, benzyl or R3 and R4 can be combined to form a five or six membered ring with the nitrogen, said ring containing one or more hetero atoms, Z

  • is the conjugate base of an acid, X is oxygen or —

    NR5, wherein R5 is as defined in R1 above, A is an alkylene group of 1 to 4 carbons, R6 and R7 are hydrogen, branched or unbranched C1-22 alkyl, benzyl or C1-C4 alkylhydroxy, n and m are 2, 3, 4 or greater;

    and the hydrophobic polymeric block (B) comprises siloxane monomer units, and ii.) a hydrophobic benefit agent.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×