Aqueous ink composition for ink-jet recording
US4631085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1985 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Oct 22, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous ink composition for ink-jet recording comprising an aqueous solution of a water-soluble dye of formula (I) and a humectant dissolved in water: ##STR1## wherein R.sup.1 represents ##STR2## wherein R.sup.4 represents an alkyl group or a hydroxyalkyl group; R.sup.2 represents hydrogen, an alkyl group, an acetyl group, an unsubstituted or substituted benzoyl group, an unsubstituted or substituted benzenesulfonyl group, or a substituted 1,3,5-triazine ring; R.sup.3 represents hydrogen, an alkyl group, an alkoxy group, halogen or a sulfonic acid group; M represents hydrogen ion, an alkali metal cation, amine cation or an ammonium ion; and n is an integer of 1, 2 or 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.