Patent ID: 6703008
Filing Date: 2004-03-09
Classification: A61K,A61P,A61Q

Abstract:
An aerosol hair spray composition comprising:A) from about 0.1% to about 10% by weight of said composition, of a first silicone-grafted copolymer comprising a vinyl polymeric backbone and a polysiloxane macromer grafted to said vinyl polymeric backbone, i) wherein said first silicone-grafted copolymer is formed from the copolymerization of randomly repeating hydrophilic monomer units, herein designated A, hydrophobic monomer units, herein designated B, and at least one polysiloxane macromer, a) wherein said vinyl polymeric backbone comprises from about 10% to about 50%, by weight of said first silicone-grafted copolymer, of copolymerizable hydrophilic A monomers, b) wherein said vinyl polymeric backbone comprises from 0% to about 85%, by weight of said first silicone-grafted copolymer, of copolymerizable hydrophobic B monomers, c) wherein said first silicone-grafted copolymer comprises from about 5% to about 50%, by weight of said first silicone-grafted copolymer, of polysiloxane macromers, ii) wherein said polysiloxane macromer has a weight average molecular weight from about 500 to about 50,000; and iii) wherein said first silicone-grafted copolymer has a weight average molecular weight from about 10,000 to about 500,000, B) from about 0.1% to about 5% by weight of said composition, of a second silicone-grafted copolymer, comprising a vinyl polymeric backbone and a polysiloxane macromer grafted to said vinyl polymeric backbone, i) wherein said second silicone-grafted copolymer is formed from the copolymerization of randomly repeating hydrophobic monomer units, herein designated B and at least one polysiloxane macromer, a) wherein said vinyl polymeric backbone comprises from 60% to about 90%, by weight of said second silicone-grafted copolymer, of copolymerizable hydrophobic B monomers, b) wherein said second silicone-grafted copolymer comprises from about 10% to about 40%, by weight of said second silicone-grafted copolymer, of polysiloxane macromers, ii) wherein said polysiloxane macromer has a weight average molecular weight from about 5,000 to about 50,000, iii) wherein said second silicone-grafted copolymer has a weight average molecular weight from about 300,000 to about 5,000,000, and iv) wherein said first silicone-grafted copolymer is present, relative to said second silicone-grafted copolymer, by weight, in a ratio from about 2:1 to about 26:1; C) a neutralizing system, i) wherein said neutralizing system comprises as least one base selected from the group consisting of an organic base, an inorganic base, and mixtures thereof, ii) wherein said neutralizing system is added at a level sufficient to neutralize from about 30% to about 95% of the acid groups on said first silicone-grafted copolymer; D) from about 20% to about 50% by weight of said composition, of a propellant and E) the balance comprising a carrier, i) wherein said carrier is suitable for solubilizing said first and said second silicone-grafted copolymers, and wherein said carrier is suitable for application to hair andwherein said composition contains less than about 3% by weight of water.