| 摘要 |
Compounds of Formula (1) and salts thereof:wherein:Ar1 is substituted aryl wherein at least one substituent is -COOH;R1 is H or optionally substituted alkyl;L is substituted phenyl carrying at least one substituent at the 2-position, or optionally substituted naphthyl.Also claimed are compositions comprising a compound of the Formula (1) and a water-soluble magenta dye, liquid compositions, especially inks, containing a compound of Formula (1), an ink jet printing process using the inks, a substrate printed with the inks, and an ink jet printer cartridge and an ink jet printer containing the inks.
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