Patent ID: 7994316

Claim:
A 1,3,5-triazine compound which is represented by formula (1): wherein Ar 1 represents a phenyl group, naphthylphenyl group, biphenylyl grow or naphthyl group, which may be substituted with an alkyl group having from 1 to 6 carbon atom(s), R 1 and R 2 represent a hydrogen atom or a methyl group, R 3 represents an alkyl group having from 1 to 4 carbon atom(s), m is an integer of from 0 to 2, wherein R 3 may be the same or different from each other when m is 2; X represents a 1,3-phenylene group, 1,4-phenylene group, 1,4-naphthylene group, 1,5-naphthylene group, 2,6-naphthylene group, 2,4-pyridylene group, 2,5-pyridylene group or 2,6-pyridylene group, which may be substituted with an alkyl group having from 1 to 4 carbon atom(s), p is 1 or 2, wherein X may be the same or different from each other when p is 2; Ar 2 represents a phenyl group, 1-naphthyl group, 2-naphthyl group, 2-pyridyl group, 3-pyridyl group or 4-pyridyl group, which may be substituted with at least one alkyl group having from 1 to 6 carbon atom(s), with the proviso that at least one pyridine ring is contained in the substituent group —(X) p —Ar 2 ; a and b are 1 or 2 wherein a+b is 3, Ar 1 may be the same or different from each other when a is 2, and R 1 , R 2 , R 3 , m, X, p and Ar 2 may be the same or different from one another when b is 2.