367  US 9,323,150 B2  368  -continued  The composition of the present invention may further com› prise a basic compound. It is preferred for the basic com- pound to be a compound whose basicity is stronger than that  of phenol. This basic compound is preferably an organic basic  compound, more preferably a nitrogen-atom-containing  basic compound.  Useful nitrogen-atom-containing basic compounds are not  particularly limited. For example, use can be made of the  compounds of categories (1) to (7) below.  (1) Compounds of general formula (BS-1) below  In general formula (BS-1 ), each of Rs independently rep› resents a hydrogen atom or an organic group, provided that in  no event all the three Rs are hydrogen atoms. As the organic  group, there can be mentioned a linear or branched alkyl  group, a cycloalkyl group (monocyclic or polycyclic), an aryl  group and an aralkyl group.  The numberof carbon atoms of the alkyl group represented  by R is not particularly limited. However, it is generally in the  range of 1 to 20, preferably 1 to 12.  The number of carbon atoms of the cycloalkyl group rep- resented by R is not particularly limited. However, it is gen› erally in the range of3 to 20, preferably 5 to 15.  The number of carbon atoms of the aryl group represented  by R is not particularly limited. However, it is generally in the  range of 6 to 20, preferably 6 to 10. In particular, a phenyl  group, a naphthyl group and the like can be mentioned.  The number of carbon atoms of the aralkyl group repre› sented by R is not particularly limited. However, it is gener- ally in the range of 7 to 20, preferably 7 to 11. In particular, a  benzyl group and the like can be mentioned.  In the alkyl group, cycloalkyl group, aryl group and aralkyl  group represented by R, a hydrogen atom thereof may be  replaced by a substituent. As the substituent, there can be  mentioned, for example, an alkyl group, a cycloalkyl group,  an aryl group, an aralkyl group, a hydroxyl group, a carboxyl  group, an alkoxy group, an aryloxy group, an alkylcarbony› loxy group, an alkyloxycarbonyl group or the like.  The compounds represented by general formula (BS-1) in  which the at least two Rs are the organic groups are preferred.  Specific examples of the compounds of general formula  (BS-1) include tri-n-butylamine, tri-n-pentylamine, tri-n-oc› tylamine, tri-n-decylamine, triisodecylamine, dicyclohexyl› methylamine, tetradecylamine, pentadecylamine, hexadecy- !amine,  octadecylamine,  didecylamine,  methyloctadecylamine, dimethylundecylamine, N,N-dim› ethy ldodecy !amine, methy ldioctadecy !amine, N,N-dibuty !a› niline, N,N-dihexylaniline, 2,6-diisopropylaniline, 2,4,6-tri  (t-butyl)aniline and the like.  The compounds represented by general formula (BS-1) in  which at least one of Rs is a hydroxy lated alkyl group are also  preferred. Specific examples of the compounds include tri› ethanolamine, N,N-dihydroxyethylaniline and the like.  With respect to the alkyl group represented by R, an oxy- gen atom may be present in the alkyl chain to thereby form an  oxyalkylene chain. The oxyalkylene chain preferably con› sists of-CH$_{2}$CH$_{2}$ 0-. As particular examples thereof, there  can be mentioned tris(methoxyethoxyethyl)amine, com› pounds shown in column 3 line 60 et seq. of U.S. Pat. No.  6,040,112 and the like.  Specific examples of the basic compounds of general for› mula (BS-1) are shown below.  (PB-13)  (PB-14)  f\  0  0  o  o  )Y~  IT  Q  0  (CF2)3-~-N  0  (PB-15)  OH  O  0  ~#  .,,..s  0  (PB-16)  OH  O  0  ~#  .,,..s  0  (PB-17)  (PB-18)  [Basic Compound]  (BS-1)  R  I  R-N-R 