Tris(formylphenyl) and novel polynuclear phenol derived therefrom

1. 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.

2. The tris(formylphenyl) according to claim 1 , expressed as a tris(formylphenol) according to General Formula (2):

wherein R 1 , R A , R B , R C , n and m are the same as the items represented by the corresponding symbols in General Formula (1).

3. The tris(formylphenyl) according to claim 1 , wherein General Formula (2) is represented by General Formula (3):

wherein R A , R B , R C , R 1 and m are the same as the items represented by the corresponding symbols in General Formula (1); R 1 ′ is the same as R 1 in General Formula (1) and represents 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.

4. The tris(formylphenyl) according to claim 3 , wherein General Formula (3) is represented by General Formula (4):

wherein R A , R B and R 1 are the same as the items represented by the corresponding symbols in General Formula (1), and R 1 ′ is the same as R 1 in General Formula (1).

5. The tris(formylphenyl) according to claim 4 , wherein General Formula (4) is represented by General Formula (5):

wherein R 1 is the same as the item represented by the corresponding symbol in General Formula (1).

6. The tris(formylphenyl) according to claim 1 , expressed as a tris(4-ether-3-formylphenyl) according to General Formula (6):

wherein R 1 , R A and R B are the same as the items represented by the corresponding symbols in General Formula (1), and R 1 ′ is the same as R 1 in General Formula (1); R 2 and R 3 are the same as the items represented by the corresponding symbols in General Formula (1), where R 2 is 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; R 3 is a hydrogen atom or alkyl group with a carbon atom number of 1 to 6.

7. The tris(formylphenyl) according to claim 6 , wherein General Formula (6) is represented by General Formula (7):

wherein R 1 R 2 and R 3 are the same as the items represented by the corresponding symbols in General Formula (6).

8. A polynuclear phenol expressed by General Formula (8):

wherein R A and R B respectively represent a hydrogen atom or an alkyl group with a carbon atom number from 1 to 6; R 1 and R 1 ′ may be the same or different and respectively represent a hydrogen atom, an alkyl group with a carbon atom number from 1 to 8, or an alkoxyl group with a carbon atom number from 1 to 8; 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; R 3 represents a hydrogen atom or primary or secondary alkyl group with a carbon atom number of 1 to 6; X represents a hydroxyphenyl group expressed by General Formula (9) specified below:

wherein R represents 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, while a indicates an integer of 1 to 3 and b indicates an integer of 0 to 4, where 1≦a+b≦5 and if b is 2 or more, Rs may be the same or different.

9. The polynuclear phenol according to claim 8 , wherein General Formula (9) is represented by General Formula (10):

wherein R 4 , R 5 and R 6 are the same as R in General Formula (9).

10. The polynuclear phenol according to claim 8 , expressed by General Formula (11):

wherein R 1 , R 1 ′, R A , R B and X are the same as the items represented by the corresponding symbols in the aforementioned General Formula (8).

11. The polynuclear phenol according to claim 10 , wherein General Formula (11) is represented by General Formula (12):

wherein R 1 and X are the same as the items represented by the corresponding symbols in the aforementioned General Formula (11).

12. The polynuclear phenol according to claim 8 , expressed by General Formula (13):

wherein R 1 , R 1 ′, R 2 , R 3 , R A , R B and X are the same as the items represented by the corresponding symbols in General Formula (8).

13. The polynuclear phenol according to claim 12 , wherein General Formula (13) is represented by General Formula (14):

wherein R 1 , R 2 , R 3 and X are the same as the items represented by the corresponding symbols in General Formula (8).