| abstract |
(57) [Summary] [Structure] An amide obtained by the reaction of a fatty acid (A), a diamine (B) having a primary or secondary amino group and a tertiary nitrogen in the molecule, and a quaternizing agent (C). A betaine-type amphoteric surfactant, wherein at least a part of the above fatty acids (A) has an OH group, or a fatty acid having an OH group and a fatty acid having no OH group are condensed 2 An emulsified composition characterized by a water-in-oil emulsion comprising an emulsifier component of an amidobetaine-type amphoteric surfactant which is an oligomeric fatty acid of a monomer or higher, and an oil phase component and an aqueous phase component. [Effect] It is possible to obtain a stable W / O type emulsion which is not inferior to an emulsion using a conventionally widely used surfactant, and is difficult to emulsify until now. Stable W / even for polar oils An O-type emulsion was obtained, and elongation and stickiness were improved in the feeling of use, and various feelings could be appropriately prepared. |