ANTIOXIDANT AND BISAMINOPHENOL DERIVATIVE

摘要

The present invention provides antioxidants made of an aromatic hydroxyamine derivative having a structure represented by the general formula (I): wherein R¹, R² and R³ are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; X is a hydrogen atom or an OH group; Y is a hydrogen atom or an NHR¹ group; A is a direct bond, -O-, -NH-, -SO₂-, -CH₂- or -C(CH₃)₂-, and when an OH group and an NHR¹ group are introduced to a unilateral benzene ring, these groups are respectively bonded to adjacent positions of the benzene ring; and n is 0 or 1 with the proviso that when n is 0, R¹ is not a hydrogen atom, as well as bisaminophenol derivatives represented by the above general formula (I) wherein n is 1; R² and R³ are each a hydrogen atom; X is an OH group; Y is an NHR¹ group; A is -C(CH₃)₂-; and R¹ is isopropyl, isobutyl or isohexyl. The aromatic hydroxyamine derivatives having a structure represented by the general formula (I), in particular, the bisaminophenol derivatives as novel substances, exhibit an excellent oxidation-inhibiting property, and are usable as antioxidants or polymerization inhibitors.