Patent ID: 7737628

Claim:
An aromatic amine represented by the following general formula (1): wherein, A 1 to A 4 each independently represents a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 5 to 20 ring carbon atoms, or a substituted or unsubstituted cycloalkyl group having 5 to 12 ring carbon atoms a, b, c and d each independently represents an integer of 0 to 5; when a, b, c and d each are 2 or greater, A 1 to A 4 may be the same with or different from each other, and may bond with each other to form a saturated or unsaturated ring; wherein at least two of a, b, c and d are integers of 1 or greater, and, at least two of A 1 to A 4 are substituted or unsubstituted cycloalkyl groups having 5 to 12 ring carbon atoms.