| abstract |
An object of the present invention is to provide a fluorine-containing phosphoric acid derivative in which particles made of a fluorine-containing polymer are obtained with a small particle size by being present during emulsion polymerization. SOLUTION: The following general formula (i) Rf- (CH 2) n -PO ( OM) 2 (i) (Wherein, M represents NH 4 , Li, Na, K or H. n represents an integer of 1 to 3. Rf represents an alkyl group having 1 or more carbon atoms and having 1 or more fluorine atoms. A surfactant comprising a fluorine-containing phosphoric acid derivative represented by the following formula: [Selection diagram] None |