| 摘要 |
<p>A quaternary ammonium salt of the following formula (1): ä(R<1>)a(R<2>)b(R<3>)c(R<4>OCH2CH2OCH2CH2)dNü<+>.A<-> Äwherein, R<1>, R<2> and R<3> may be mutually the same or different and represent an alkyl group having 1 to 4 carbon atoms or an alkyloxyethyl group of the formula (2): R<5>OCH2CH2- (wherein, R<5> represents a methyl group or ethyl group), R<4> represents a methyl group or ethyl group, and any two of R<1>, R<2> and R<3> 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 ÄN (SO2CF3)2 <-> Ü, tetrafluoroborate ion (BF4-) or hexafluorophosphate ion (PF6 <->).Ü.</p> |
