| 摘要 |
The present invention relates to a surfactant represented by Formula (I): [Formula 1] wherein Rf represents a fluoroalkyl group which may have an ether bond; Rh represents an alkyl group; r represents 1 or 0; when r=0, Z1 and Z2 represent (CH2)n1—(X1)p1— and —(X2)q1—, respectively; and when r=1, Z1 and Z2 represent (CH2Y)p2—CH2— and —(CH2Y)q2—, respectively, wherein X1 and X2 may be the same or different and each represents a divalent linking group, p1 represents 0 or 1, q1 represents 0 or 1, n1 represents an integer of 1-10; Y represents O, S or NR, wherein R represents a hydrogen atom, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, or t-butyl; p2 and q2 each represent 0 or 1 but are not 0 at the same time; and M represents a hydrogen atom, alkali metal, ½ alkaline earth metal or ammonium.
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