Ink jet printing ink
US5876491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Ink compositions comprising an aqueous medium containing: PA1 (1) at least one water-soluble dye; PA1 (2) at least one cyclic ester or amide of the formula: ##STR1## wherein m is a whole number from 3 to 5 and X represents --O-- or --N(R)-- in which R represents hydrogen, alkyl or substituted alkyl; PA1 (3) at least one hydroxy compound selected from polyhydroxy compounds having at least four hydroxy groups, optionally substituted cycloalkanols, cyclohexane dimethanol, benzyl alcohol, benzene dimethanol, phenol and polyhydroxybenzenes, and PA1 (4) at least one water-soluble organic solvent selected from alkanediols, alkanetriols, ether glycols and thioether glycols and suitable for use in inkjet printing processes for coloration of substrates such as paper or overhead projector slides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.