Micellar-based ink compositions
US5484475A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Aug 29, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an ink composition consisting essentially of water, a colorant, an organic component miscible with water, and micelles which comprise an ethoxylated alcohol. Also disclosed is a process for preparing an aqueous ink composition which comprises (a) admixing an ethoxylated alcohol with a water-miscible organic liquid at a temperature at or above the melting point of the ethoxylated alcohol to prepare a saturated solution of the ethoxylated alcohol in the organic liquid; (b) cooling the solution thus formed, thereby obtaining a solid solution with a melting point of from about 30.degree. to about 80.degree. C.; (c) admixing the saturated solution thus prepared with a mixture containing water and a water soluble dye at a temperature equal to or higher than the melting point of the ethoxylated alcohol solution, thereby resulting in an ink composition containing micelles which comprise the ethoxylated alcohol. Further disclosed is an ink jet printing process which comprises incorporating into an ink jet printing apparatus an ink composition which comprises water, a colorant, an organic component miscible with water, and micelles which comprise an ethoxylated alcohol, and caus…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.