Diketopyrrolopyrrole compositions
US6066202A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | May 5, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Substance compositions, which comprise at least one diketopyrrolopyrrole from each of formulae ##STR1## R.sub.1 is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylthio, halogen or phenyl, PA0 R.sub.2 is a COX group, wherein PA0 X is NR.sub.4 R.sub.5 or a heterocyclic radical containing at least 2 N atoms, one of which N atoms forms an amide with the carbonyl group, PA0 R.sub.3 is hydrogen, halogen or C.sub.1 -C.sub.6 alkyl, Admixture of such a substance composition to diketopyrrolopyrrole pigments improves the rheological behaviour of the latter as well as the gloss of the colorations produced therewith to an unexpected degree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.