Compositions and methods for imparting improved rheology on pigment based inks and paints
US7074267B2 · kind B2 · utility
4Cited by
9References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2003 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Apr 24, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0033
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pigment composition comprising an organic pigment and a combination of at least two normally water-soluble coloured compounds (dyes) of opposing charge, i.e. of at least one anionic and one cationic dye are provided. The compositions impart improved rheology on non-aqueous pigment based printing inks and paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.