Patent ID: 7858819

Claim:
A tris(formylphenyl) expressed by General Formula (1): wherein Y represents a hydrogen atom or —R 2 COOR 3 group, R 2 represents a monocyclic or condensed cyclic aromatic hydrocarbon group with a carbon atom number of 6 to 15 or an aliphatic hydrocarbon group with a carbon atom number of 1 to 8 that may have in its main chain a monocyclic or condensed cyclic aromatic hydrocarbon group with a carbon atom number of 6 to 15, and R 3 represents a hydrogen atom or alkyl group with a carbon atom number of 1 to 6; R 1 s may be the same or different and respectively represent a hydrogen atom, alkyl group with a carbon atom number of 1 to 8 or alkoxyl group with a carbon atom number of 1 to 8; R B and R C may be the same or different, where R A , R B and R C respectively represent a hydrogen atom or alkyl group with a carbon atom number of 1 to 6 and n and m are respectively an integer of 0 or 1 to 3.