| 摘要 |
<p>A compound of formula (1): Pc-SO2-NH-CH2CH2-NH-CH2CH2NH-SO2-Pc wherein each Pc is independently an optionally substituted phthalocyanine groups provided that at most one of the groups represented by Pc carries a substituent of formula SO2NH2. Also claimed are inks comprising these compounds, ink jet printer cartridges containing these inks, their use in ink jet printing and substrates printed with these compounds and/or inks.</p> |
