Patent ID: 7371715

Claim:
An emulsion composition, comprising: an optically isotropic surfactant phase comprising a nonionic surfactant (hereinafter the phase being referred to as The surfactant phase) in an amount of 10% or more by mass, wherein said surfactant phase is present as droplets ranging from 0.1 to 10 μm in an aqueous solution phase, and an aqueous solution phase comprising an electrolytic salt (hereinafter the phase being referred to as the aqueous solution phase), the amount of the salt being such an amount that the aqueous solution phase is incompatible with the surfactant phase, wherein the water content of the entire composition is 20% or more by mass and the electrolytic salt content is from 4 to 32% by mass, wherein the surfactant phase and the aqueous solution phase are stabilized with an emulsifier polymer selected from the group consisting of: (1) a copolymer containing an ester of a polyalkylene glycol and a vinyl monomer having a carboxyl group or a salt thereof; and (meth)acrylic acid or a salt thereof (hereinafter being referred to as emulsifier polymer (1)); (2) a copolymer containing an ether of polyalkylene glycol having a reactive unsaturated group; and (meth)acrylic acid or a salt thereof (hereinafter being referred to as emulsifier polymer (2)); and (3) a copolymer containing (meth)acrylic acid esters having a saturated alkyl or aralkyl group having 9 to 30 carbon atoms; and (meth)acrylic acid or a salt thereof (hereinafter being referred to as emulsifier polymer (3)).