1,4-diketo-3,6-diarylpyrolo3,4-c! pyrrole
US5785750A · kind A · utility
4Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/004
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pyrrolopyrrole derivatives of the formula (I) ##STR1## wherein QA is a quinacridone radical are disclosed. The inventive pyrrolopyrrole derivatives show excellent rheology enhancing properties for pigment dispersions, especially those containing quinacridones, DPPs and their solid solution pigments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.