Patent ID: 6355724
Filing Date: 2002-03-12
Classification: A61K,A61Q,C08K

Abstract:
A silicone gel composition comprising:(a) a low molecular weight volatile organosilicone fluid selected from the group consisting of decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and alkylmethylsiloxanes having the general formula RRâ€²Si (OSiMe3)2, wherein Me is methyl, and R is a monovalent aliphatic or aromatic hydrocarbon substituent with from 2 to 8 carbon atoms, Râ€² is methyl or Me3SiOâ€”, and combinations thereof, and (b) an elastomeric-like silicone matrix produced by platinum catalyzed hydrosilylation curing of four functional oligomeric silicones, having the following compositions: (1) a vinyl terminated polydimethylsiloxane having the general formula ViMe 2SiO (Me2SiO)aSiMe2Vi, (2) a hydride terminated polydimethylsiloxane having the general formula HMe22Si (Me2SiO)bSiMe2H, (3) a vinyl functional MviMQ organosilicone: resin having the general formula (ViMe2SiOÂ½)c (Me3SiOÂ½)d(SiO2)e, and (4) a hydride functional crosslinking agent having the general formula HMe2SiO (HMe2SiORSiO) fSiMe2H; wherein Me is methyl, Vi is vinyl, M is Me3SiOÂ½â€”, Mvi is ViMe2SiOÂ½, Q is SiO2, each R is independently a monovalent aliphatic or aromatic hydrocarbon substituent having 2 to 8 carbons, a is in the range of 1 to about 200, b is in the range of 1 to about 200, c and d are in the range of 3 to about 10, e is in the range of about 10 to about 20, and f is in the range of 1 to 3.