Pigment compositions of diketopyrrolopyrroles
US5738719A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pigment composition, comprising PA1 a) 80-99.8 mol % of a diketopyrrolopyrrole of formula ##STR1## wherein A and B are each independently of the other a ##STR2## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, chloro, bromo, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.8 alkoxy, C.sub.2 -C.sub.19 alkoxycarbonyl, C.sub.2 -C.sub.19 alkylcarbamoyl, C.sub.1 -C.sub.18 alkylmercapto, C.sub.1 -C.sub.18 alkylamino, C.sub.5 -C.sub.6 cycloalkyl, G is a direct bond or --O--, --S--, --SO--, --SO.sub.2 -- or --NR.sub.5 --, R.sub.3 and R.sub.4 are each independently of the other hydrogen, chloro, bromo, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.18 alkoxy or C.sub.1 -C.sub.18 alkylamino, and R.sub.5 is hydrogen or C.sub.1 -C.sub.6 alkyl, and PA1 b) 20-0.2 mol % of a diketopyrrolopyrrole of formula ##STR3## wherein one of R.sub.6 or R.sub.7 is hydrogen and the other is --CN. Such pigment compositions are distinguished by excellent resistance to recrystallisation and heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.