Patent ID: 6444745
Filing Date: 2002-09-03
Classification: A61K,A61Q,C08L

Abstract:
A silicone composition, comprising:(a) a polyethersiloxane block copolymer network, comprising: one or more polyether blocks, each comprising two or more structural units of the formula (I): â€”R1Oâ€”â€ƒâ€ƒ(I) wherein each R1 is independently a divalent hydrocarbon radical or R2, wherein R2 is a trivalent hydrocarbon radical, and one or more polysiloxane blocks, each comprising two or more structural units of the formula (II): â€”R32SiO2/2â€”â€ƒâ€ƒ(II) wherein each R3 is independently a monovalent hydrocarbon radical or R2, and wherein at least one polyether block of the copolymer network is bonded to at least one polysiloxane block of the copolymer network by a link according to formula (III): wherein the R2O unit of the structure of formula (III) is a unit of the at least one polyether block and the R2R3SiO2/2 unit of the structure of formula (III) is a unit of the at least one polysiloxane unit, and (b) a fluid within the network.