| 摘要 |
A compound of Formula (1) and salts thereof: wherein: R1 and R2 are independently H or optionally substituted C1-4alkyl; R3 is optionally substituted aryl or optionally substituted heteroaryl; X and Y are independently an acetyl group, an acetate ester group, a carbonamide group, a sulfoxide group, a sulfone group, a phosphonate group, a nitro group, a nitrile group, an isonitrile group, a quaternary amine, a carbonyl group (other than a carboxylic acid), a polyhaloalkyl group or a halogen atom; a+b=0 to 4; and n=1 to 6. Also ink-jet compositions, processes and cartridges and printed material.
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