Fluorescent diketopyrrolopyrroles
US7906039B2 · kind B2 · utility
1Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2009 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Jan 14, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to fluorescent diketopyrrolopyrrole of the formula Ia process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilization and high in luminance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.