Polycylic dyes
US5084580A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1989 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Sep 21, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of the Formula VII: ##STR1## wherein; X.sup.1 and X.sup.2 are each independently selected from H, cyano, alkyl, alkoxy, aryl, carbamoyl, sulphamoyl, COOH and carboxylic acid ester; PA1 Z.sup.1 and Z.sup.2 are both --O--; PA1 R.sup.1 and R.sup.2 are each independently selected from H, or an optionally substituted alkyl, alkenyl, cycloalkyl, aryl and aralkyl group; or PA1 R.sup.1 and R.sup.2 together with the N atom to which they are attached, form a heterocycle; PA1 R.sup.4, R.sup.5, R.sup.7 and R.sup.8 are each independently selected from E, halogen, or an optionally substituted alkyl, alkenyl and alkoxy group or PA1 R.sup.1 and R.sup.4 or R.sup.2 and R.sup.5 together with the N atom and the two carbon atoms in Ring B to which they are attached form a heterocycle fused to Ring B; or PA1 R.sup.1 and R.sup.7 or R.sup.2 and R.sup.8 together with the N atom and the two carbon atoms in Ring A to which they are attached form a heterocycle fused to Ring A; or PA2 R.sup.6 is selected from H, halogen, or an optionally substituted alkyl or alkoxy group and a group NR.sup.1 R.sup.2 in which each of R.sup.1 and R.sup.2 are independently as hereinbefore described, and where R.sup.6 is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.