Patent ID: 11958978
Assignee: CANON KABUSHIKI KAISHA
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A coloring compound comprising a structure represented by formula (1-1) or formula (1-2):, where:
R1 and R2 each independently represents an unsubstituted alkyl group;
R3 and R4 each independently represents a hydrogen atom or an unsubstituted alkyl group;
R5 and R6 each independently represents a hydrogen atom or an unsubstituted alkyl group having 1 to 4 carbon atoms;
R7 and R8 each independently represents an unsubstituted alkyl group having 1 to 4 carbon atoms;
R9 represents a halogen atom, a nitro group, a sulfo group, a sulfonic acid ester group, a sulfonamide group, a sulfonic acid salt group, a benzenesulfonyl group, a trifluoromethylsulfonyl group, or a perfluoroalkyl group;
R10 represents a hydrogen atom, a halogen atom, a nitro group, a sulfo group, a sulfonic acid ester group, a sulfonamide group, a sulfonic acid salt group, a benzenesulfonyl group, a trifluoromethylsulfonyl group, or a perfluoroalkyl group; and
X− represents an anion,
wherein in R1 to R4, the unsubstituted alkyl group is an n-butyl group, a 2-ethylhexyl group, or an octyl group;, where:
R1 and R2 each independently represents an unsubstituted alkyl group;
R3 and R4 each independently represents a hydrogen atom or an unsubstituted alkyl group;
R5 and R6 each independently represents a hydrogen atom or an unsubstituted alkyl group having 1 to 4 carbon atoms;
R7 and R8 each independently represent an unsubstituted alkyl group having 1 to 4 carbon atoms;
R9′ represents —SO3−; and
R10′ represents a hydrogen atom, a halogen atom, a nitro group, a sulfo group, a sulfonic acid ester group, a sulfonamide group, a sulfonic acid salt group, a benzenesulfonyl group, a trifluoromethylsulfonyl group, or a perfluoroalkyl group,
wherein in R1 to R4, the unsubstituted alkyl group is an n-butyl group, a 2-ethylhexyl group, or an octyl group.