Patent ID: 7745661

Claim:
A process for producing a tricarboxylic acid tris(alkyl-substituted cyclohexylamide) represented by General Formula (3): wherein R 1 is a C 3 to C 10 trivalent saturated aliphatic hydrocarbon group, a C 5 to C 15 trivalent saturated alicyclic hydrocarbon group, or a C 6 to C 15 trivalent aromatic hydrocarbon group, and R 2 and R 3 are the same or different and are each a hydrogen atom or a C 1 to C 4 linear or branched alkyl group, the process comprising the step of subjecting a tricarboxylic acid represented by the following General Formula (1): wherein R 1 has the same meaning as R 1 in General Formula (3), and an alkyl-substituted cyclohexylamine represented by the following General Formula (2): wherein R 2 and R 3 have the same meanings as R 2 and R 3 in General Formula (3) to an amidation reaction (a) in the presence of a boric acid compound and a phenol compound, or (b) in the presence of a boric acid ester obtained by the dehydration condensation of a boric acid compound and a phenol compound, to obtain a crude tricarboxylic acid tris(alkyl-substituted cyclohexylamide).