Disclosed are the following ether compound, and the use of the same. In formula (1), n represents 0 or 1, m represents an integer of 0-2, Y represents -O-, -S-, -C (=O) -O- and -O- C (=O) -, X1 and X2 represent a hydrogen atom or a fluorine atom, and R represents a 1-20 carbon number aliphatic hydrocarbon group substituted with at least one fluorine atom. Therein, if m is 0 the carbon number of R is 3-20. Also, R can intermediate an oxygen atom, a sulphur atom and a carbonyl group in a bond.
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