| abstract |
An α-gel generation composition consisting of: (A) From 20 to 80% by mass of a mixture containing one or more higher alcohols having 16 or more carbon atoms and a non-ionic surfactant with an HLB value of 7 to 17 in the molar ratio of 3: 2 to 5: 1, and (B) 20 to 80% by mass of a mixture containing one or more water-soluble solvents with a value of IOB (inorganic-organic equilibrium) 1.5 to 3.5 and water in the mass ratio of 4: 6 to 8: 2: in which the non-ionic surfactant is one or more surfactants selected from the group consisting of alkyl polyoxyethylene ethers, acid esters polyethylene glycol fatty acids, polyoxyethylene hydrogenated castor oil, and polyoxyethylene glyceryl fatty acid esters; wherein the water soluble solvent having the IOB value of 1.5 to 3.5 is one or more water soluble solvents selected from the group consisting of dipropylene glycol, isoprenoglycol, 1,3-butanediol, 1,4- butanediol, and propylene glycol; wherein the composition is a liquid consisting of a bicontinuous microemulsion phase or a dispersed bicontinuous microemulsion phase of lamellar liquid crystal of 50 to 80 ° C and a solid at room temperature. and in which the composition generates an α gel by adding water after the formation of the liquid by heating from 50 to 80 ° C. |