Patent ID: 6534069
Filing Date: 2003-03-18
Classification: A61K,A61Q

Abstract:
A hydroalcoholic composition comprising:a) a major amount of a hydroalcoholic solvent comprising a lower alcohol and water in a weight ratio of about 60:40 to about 75:25; and b) a thickener system present in an amount of about 0.5% by weight to about 8% by weight, based on the total weight of the composition; wherein the thickener system comprises at least one emulsifier in an amount of at least about 0.05% by weight, based on the total weight of the composition; wherein the emulsifier comprises: (i) at least one hydrophobic group selected from the group of: (A) an alkyl group of at least 16 carbon atoms; (B) an alkenyl group of at least 16 carbon atoms; and (C) an aralkyl or an aralkenyl group of at least 20 carbon atoms; and (ii) at least one hydrophilic group selected from the group of: (A) an ethylene oxide- and/or propylene oxide-containing group bonded to the hydrophobic group through an ether or ester bond and optionally terminated with a (C1-C36)alkyl ester, (C2-C36)alkenyl ester, or (C6-C36)alkaryl ester; (B) an alcohol group; (C) a polyhydric alcohol group; (D) an ester or ether group of a polyhydric alcohol or polyalkoxylated derivative thereof; (E) an ester or ether group of sorbitan or polyalkoxylated derivative thereof having 2-150 moles of alkylene oxide per mole of hydrophobic group; and (F) combinations thereof, wherein;the composition has a melt temperature of greater than about 35Â° C. when in the absence of an auxiliary thickener and a viscosity of at least about 4,000 centipoise at 23Â° C. when in the absence of an auxiliary thickener; wherein the viscosity is measured using a very low shear viscometer and T spindles with a heliopath adapter.