Fluorescent diketopyrrolopyrroles
US7749404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2006 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Mar 1, 2028 |
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 diketopyrrolopyrroles (“DPPs”) of the formulaA1 and A2 independently from each other stand forcharacterized in that that at least two adjacent substituents R5 to R11 form an aromatic or aliphatic fused ring system, or at least one substituent R5 to R11 is cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, a hydroxyl group, a mercapto group, alkylthio, an aryl thioether group, a heterocyclic group, halogen, haloalkyl, haloalkenyl, haloalkynyl, a cyano group, an aldehyde group, a carbonyl group, a carboxyl group, an ester group, a carbamoyl group, a nitro group, a silyl group, a siloxanyl group, a substituted or unsubstituted vinyl, arylamino or diarylamino group; a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, or for the preparation of polymeric ink particles, toners, dye lasers and electroluminescent devices.The fluorescent diketopyrrolopyrroles (“DPPs”) of the formula I exhibit a high lightfastness, a high heat stability, especially in plastics. A luminescent device comprising a DPP compound of formula I is hi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.