Inkjet ink compositions comprising polymeric dispersants having attached chromophore groups
US7947761B2 · kind B2 · utility
5Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an inkjet ink composition comprising a liquid vehicle, a pigment, and a polymeric dispersant. In one embodiment, the pigment comprises a colorant having the formula A-(B)x or is a carbon black pigment and the polymeric dispersant comprises a polymeric group and at least one group having the formula -A′-(B)y(C)z, wherein A and A′ are organic chromophore groups. In a second embodiment, the polymeric dispersant comprises a polymeric group and an organic chromophore group capable of interacting with the pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.