US 10,175,578 B2  41  42  ethy lundecy !amine,  N,N-dimethy ldodecy !amine,  methy 1  dioctadecylamine, N,N-dibutylaniline, N,N-dihexylaniline,  2,6-diisopropylaniline, and 2,4,6-tri(t-butyl)aniline.  In addition, as the preferable basic compound represented  by General Formula (BS-1), an alkyl group in which at least  one R is substituted with a hydroxy group is exemplified.  Specific examples thereof include triethanolamine and N,N› dihydroxyethylaniline.  Moreover, the alkyl group as R may have an oxygen atom  in the alkyl chain. That is, an oxyalkylene chain may be  formed. As the oxyalkylene chain. ----CH$_{2}$CH$_{2}$ 0- is pref› erable. Specific examples thereof include tris(methoxy› ethoxyethyl)amine and a compound disclosed after line 60  of colunm 3 in the specification of U.S. Pat. No. 6,040,112.  Examples of the basic compound represented by General  Formula (BS-1) include the following ones.  (2) Compound Having Nitrogen-Containing Heterocyclic  Structure  The nitrogen-containing heterocycle may have aromatic  properties, or may not have aromatic properties. The nitro- gen-containing heterocycle may have a plurality of nitrogen  atoms. Furthermore, the nitrogen-containing heterocycle  may contain heteroatoms other than the nitrogen atom.  Specific examples thereof include a compound having an  imidazole structure (2-phenylbenzimidazole, 2,4,5-triph› enylimidazole and the like), a compound having a piperidine  structure [N-hydroxyethylpiperidine, bis(l ,2,2,6,6-pentam› ethyl-4-piperidyl)sebacate, and the like], a compound hav› ing a pyridine structure (4-dimethylaminopyridine and the  like), and a compound having an antipyrine structure (anti› pyrine, hydroxyantipyrine, and the like).  Furthermore, a compound having two or more ring struc› tures is suitably used. Specific examples thereof include  1,5-diazabicyclo[ 4.3.0]non-5-ene  and  1,8-diazabicyclo  [5.4.0]undeca-7-ene.  (3) Ammonium Salt  An ammonium salt can also be appropriately used as the  basic compound. Examples of the anion of the animonium  salt include halide, sulfonate, borate, and phosphate. Among  these, halide and sulfonate are particularly preferable.  As the halide, chloride, bromide, or iodide is particularly  preferable.  [o/’--....../OH  /0~  N~o/’--....../OH  [o/’--....../OH  HO/’--......,/O~N~ 0 [o/’--....../OH  /O~N~O~OH  ro~  /O~N~O~  [o/’--....../OH  ~O~N~O~  rO~OH  /O~N~ 0 rO~OH  /O~N~O~OH  [o/’--....../OH  ’---o~N~o/’--....../OH  [o/’--....../ 0 ~oH  /O~N~o/’--....../o~OH  [s/’--....../s’--..  /s~N~ 8 /’--....../s’--..  [s/’--....../SH  /  S~N~S/’--......,/  SH  [s/’--....../SH  HO~  \_o  o  ~  I\  I\  ~N  O  O  ~o  o  HO__/  \  ro/’-...../OH  N~ 0 /’-.....,/0H  [o/’--....../ 0 ~oH  HO~N~o/’--....../o~OH  fO,,,,........._,o-.......,/’-OH  ~N-.......,/’-0,,,,........._,o-.......,/’-OH 