Liquid inks comprising treated colorant particles
US6828358B2 · kind B2 · utility
8Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2001 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Feb 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1355
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process of making a liquid ink comprising the steps of:(a) dissolving a polymer comprising units derived from at least a nitrogen-containing polymerizable monomer in a solvent with a Kauri-Butanol number greater than 30 to form a polymer solution;(b) dispersing colorant pigment particles in said polymer solution to form a colorant pigment dispersion;(c) removing at least some of said solvent from said colorant pigment dispersion to form treated colorant pigment particles; and(d) dispersing said treated colorant pigment particles in an organosol containing a carrier liquid having a Kauri-Butanol number less than 30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.