| 摘要 |
The present invention provides a charge control agent containing, as an active substance(s), one or two or more hydantoin derivatives represented by the following formula (1):
wherein R 1 and R 2 , which may be identical to or different from each other, represent a hydrogen atom, a linear or branched alkyl group having 1 to 8 carbon atoms which may have a substituent,etc.; R 3 represents a hydrogen atom, etc.; R 4 , to R 8 , which may be identical to or different from each other, represent a hydrogen atom, a chlorine atom, a linear or branched alkyl group having 1 to 8 carbon atoms which may have a substituent, a linear or branched alkyloxy group having 1 to 8 carbon atoms which may have a substituent, etc.,; R 3 , to R 8 may be joined to each other to form a ring; and V, W, X, Y and Z represent a carbon atom or a nitrogen atom, and 0 to 3 of V, W, X, Y and Z are nitrogen atoms which have no substituent of R 4 to R 8 . |
