Pigmented ink jet inks
US6558460B1 · kind B1 · utility
12Cited by
16References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2000 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/326
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pigmented aqueous ink jet ink composition is provided which comprises a sarcosinate compound of the formula:R—CO—NMe—CH2—COOMIn which R is a ballasting group comprising at least ten carbon atoms and M is hydrogen, an alkali metal cation, an ammonium cation or a substituted ammonium cation.Preferably the ink is prepared by dispersing the pigment in the presence of the sarcosinate compound in water, together with optional co-solvents or other components, and then diluting this dispersion to form the ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.