| abstract |
An object of the present invention is to provide hydrophilic / hydrophobic anisotropic plate-like particles in which one surface and the other surface have different hydrophilicity / hydrophobicity, a method for producing the same, an emulsifier comprising the same, and an emulsification aid. Provide the agent. SOLUTION: A plate-like particle of an acrylic polymer, and when the contact angle with water at 20 ° C. is measured on one side A and the other side B of the plate-like particle, These are hydrophilic / hydrophobic anisotropic plate-like particles having a contact angle difference of 15 degrees or more. Specifically, it is a plate-like particle of an acrylic copolymer or an acrylic copolymer mixture in which hydrophilic groups are arranged on one surface and hydrophobic groups are arranged on the other surface. An acrylic copolymer or an acrylic copolymer mixture is dissolved in a solvent, and the solution is spread on a liquid surface immiscible with the solvent to form a thin film. Then, the thin film is taken out, and then the solvent is removed from the thin film. Is removed and pulverized to produce. [Selection] Figure 1 |