Ink containing propylene oxide/ethylene oxide block copolymers for ink jet recording
US5382283A · kind A · utility
26Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1992 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Nov 6, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink for ink jet recording contains a dye and water, a water soluble organic solvent which dissolves the dye, and 0.8 to 5 weight percent of propylene oxide/ethylene oxide block copolymer which has an average molecular weight from 1000 to 5000 and whose content of ethylene oxide group is in the range from 5 to 60 weight percent based on the average molecular weight of the block copolymer. The ink has a surface tension of 30-40 dyne/cm and a viscosity of 1-10 centipoise. An ink jet ink of this invention can be a combination of three colors, e.g., cyan, magenta and yellow, or four colors (adding black to these colors).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.