Diketopyrrolopyrrole pigment with high chroma
US5492564A · kind A · utility
11Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Mar 23, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0014
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The pigment form of the diketopyrrolopyrrole pigment of formula ##STR1## having high saturation, characterised by a chroma C*.sub.ab of at least 45 in the CIELAB system when incorporated in a plasticised PVC pressed sheet. This pigment has superior opacity and an unexpectedly high chroma.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.