Modified pigments and process for preparing modified pigments
US6916367B2 · kind B2 · utility
16Cited by
31References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 9, 2003 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | May 9, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/88
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Processes for preparing modified pigments are described. In one embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiol reagent comprising at least one —SH group and at least two ionic or ionizable groups. In a second embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiopolymer comprising at least one —H group. Modified pigments are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.