Patent ID: 8178584

Claim:
A process for preparing a water-in-oil emulsified composition, wherein the method comprises (1) dissolving under heat the following components (A), (B), and (C): (A) a sphingosine represented by the following formula (1): wherein, R 1 represents a linear, branched or cyclic, saturated or unsaturated C 4-30 hydrocarbon group which may be substituted by a hydroxyl, carbonyl or amino group; Y represents a methylene group, a methine group or an oxygen atom; X 1 , X 2 and X 3 each independently represents a hydrogen atom, a hydroxyl group or acetoxy group, X 4 represents a hydrogen atom, an acetyl group or glyceryl group, or forms an oxo group together with the adjacent oxygen atom wherein, when Y represents a methine group, either X 1 or X 2 represents a hydrogen atom and the other one does not exist, and when X 4 forms an oxo group, X 3 does not exist; R 2 and R 3 each independently represents a hydrogen atom, a hydroxyl group, a hydroxymethyl group or an acetoxymethyl group; R each independently represents a hydrogen atom or an amidino group, or a linear or branched, saturated or unsaturated hydrocarbon group having 1 to 8 carbon atoms in total and optionally having a substituent selected from hydroxyl, hydroxyalkoxy, alkoxy and acetoxy groups; a stands for 2 or 3; and a dashed line indicates a saturated bond or unsaturated bond, (B) at least one C 12-30 fatty acid; and (C) an oil component, thereby forming a solution, whereby a sphingosine salt with components (A) and (B) is formed, wherein component (A) is present in an amount of 0.005 to 3 wt % based on the weight of the composition, and component (B) is present in an amount of from 0.3 to 5 moles per mole of component (A), (2) adding water to the solution, and then (3) emulsifying with the sphingosine salt in the absence of a surfactant.