Dispersant compositions improving the heat stability of transparent pigments
US6471765B2 · kind B2 · utility
1Cited by
4References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0033
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to compositions comprising a sulfonated diketopyrrolopyrrole and a Mannich-type substituted dihydroquinacridone to produce colored materials having improved stability at high temperatures. The instant compositions can be used for pigmenting polymeric materials, such as color filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.