Amine-containing block polymers for pigmented ink jet inks
US5272201A · kind A · utility
154Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Feb 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/326
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous ink jet ink composition having improved dispersion stability comprises an aqueous carrier medium, a pigment having a pH value below 7.0, and an AB block polymer consisting of an A block comprising a hydrophobic polymer having at least one basic amine functional groups, and a B block comprising a hydrophilic polymer selected from the group consisting of nonionic polymers and polymers containing acidic functional groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.