Sparingly soluble isoinodoline colorants
US4356123A · kind A · utility
2Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1980 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Mar 7, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sparingly soluble isoindoline colorants of the formula ##STR1## where R is carbamyl, N-C.sub.1 -C.sub.4 -alkylcarbamyl or N-phenylcarbamyl and Q is a group of the formula ##STR2## where A is 1,3- or 1,4-phenylene and the ring B is 1,2-phenylene, 1,2-naphthylene or 2,3-naphthylene and R has the above means, and where the phenyl radicals in R, A and B independently of one another may be unsubstituted or substituted by groups which do not confer solubility. The colorants I may be used as pigments and for coloring finishes, printing inks and plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.