Patent ID: 8735577

Claim:
A 1,3,5-triazine compound represented by the following formula (1): wherein: R 1 , R 2 , and R 3 each independently represents a hydrogen atom or a methyl group; X represents a carbon atom or a nitrogen atom; Ar 1 represents a group selected from a phenyl group, a p-tolyl group, a m-tolyl group, a 4-butylphenyl group, a 4-tert-butylphenyl group, a 4-biphenylyl group, a 3-biphenylyl group, a 1-naphthyl group, a 4-methylnaphthalen-1-yl group, a 4-tert-butylnaphthalen-1-yl group, a 5-methylnaphthalen-1-yl group, a 5-tert-butylnaphthalen-1-yl group, a 2-naphthyl group, a 6-methylnaphthalen-2-yl group, a 6-tert-butylnaphthalen-2-yl group, a 7-methylaphthalene-2-yl group, and a 7-tert-butylnaphthalen-2-yl group; and Ar 2 represents a group selected from a pyrazyl group, which may have an alkyl substituent or substituents, each having 1 to 4 carbon atoms; a 2-pyrimidyl group, which may have an alkyl substituent or substituents, each having 1 to 4 carbon atoms; a 2-quinoxalyl group, which may have an alkyl substituent or substituents, each having 1 to 4 carbon atoms; a quinazolyl group, which may have an alkyl substituent or substituents, each having 1 to 4 carbon atoms; a quinolyl group, which may have an alkyl substituent or substituents, each having 1 to 4 carbon atoms; and an isoquinolyl group, which may have an alkyl substituent or substituents, each having 1 to 4 carbon atoms.