| abstract |
[PROBLEMS] This invention provides a novel compound which can be preferably used as a surfactant, and a method for producing a fluorine-containing polymer, a surfactant and an aqueous dispersion of a fluorine-containing polymer using the novel compound. [MEANS FOR SOLVING PROBLEMS] A fluoroalkyl carboxylic acid derivative is disclosed which is represented by the following general formula (i): Rf1(OCH2CF2CF2)n1OCX1X2CF2(Rf2)n2COOM (i) (wherein Rf1 represents a straight or branched chain fluoroalkyl group having 1-20 carbon atoms, which fluoroalkyl group may have 1-5 oxygen atoms in the main chain; Rf2 represents a straight or branched chain fluoroalkylene group having 1-25 carbon atoms, which fluoroalkylene group may have 1-5 oxygen atoms in the main chain; n1 is an integer of 0-3; n2 is 0 or 1; X1 and X2 may be the same or different, and represent hydrogen atoms or fluorine atoms; and M represents NH4 or a monovalent metal element). |