发明授权
US5888286A Bisazo ink-jet dyes 失效
双偶氮喷墨染料

Bisazo ink-jet dyes
摘要:
A bisazo dye of Formula (1) and salts thereof: ##STR1## wherein: R.sub.1 and R.sub.2 each independently is H, optionally substituted C.sub.1-4 -alkyl or optionally substituted aryl;R.sub.3 is --NH.sub.2 ;R.sub.4 is OC.sub.1-4 -alkyl;each R.sub.5 independently is --COOH or --SO.sub.3 H; andn is 1,2, or 3.Also claimed are inks containing the dye, a process of ink jet printing using the inks and substrates coloured by the inks.
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