Colorant dispersion of recording ink, and recording ink using the same
US8247473B2 · kind B2 · utility
5Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2009 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Aug 19, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/0023
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a colorant dispersion for a recording ink containing at least a dispersant, a colorant, and water, wherein the dispersant is a polycarboxylic acid dispersant containing units represented by formulae (1) to (3): where R1, R2, and R4 are selected from a hydrogen atom and CH3; R3 is selected from a hydrogen atom and a C1-C3 alkyl group; R5 represents a C1-C3 alkyl group; AO and BO represent a C2-C3 oxyalkylene group; M is selected from alkali metal, alkali earth metal, ammonium, and organic amine; m represents an integer of 1 to 30; and n represents an integer of 5 to 50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.