Quaternary ammonium salts

Abstract

A quatemary ammonium salt of the following formula (1): {(R1)a(R2)b(R3)c(R4OCH2CH2OCH2CH2)dN}+.A−  (1) [wherein, R1, R2 and R3 may be mutually the same or different and represent an alkyl group having 1 to 4 carbon atoms or analkyloxyethyl group of the formula (2): R5OCH2CH2—  (2) (wherein, R5 represents a methyl group or ethyl group), R4 represents a methyl group or ethyl group, and any two of R1, R2 and R3 may mutually bond at the end to form an alkylene chain, a, b and c represent an integer of 0 to 3, d represents an integer of 1 to 4, the sum of a, b and c is 3 or less, the sum of a, b, c and d is 4, and A− represents a bis(trifluoromethylsulfonyl)imidate ion [N(SO2CF3)2−], tetrafluoroborate ion (BF4−) or hexafluorophosphate ion (PF6−)].

Dependencies are inferred from the claim text.