Ink jet ink compositions
US5017644A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | May 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is an ink jet ink composition comprising a liquid vehicle such as water or ethanol, a dye, and a linear N-hydroxyl substituted polyethyleneimine polymer. In a preferred embodiment, the linear N-hydroxyl substituted polyethyleneimine polymer is selected from the group consisting of linear poly(N-hydroxyethylethyleneimine), linear poly(N-hydroxypropylethyleneimine), and linear poly(N-hydroxymethylethyleneimine). Also disclosed is a process for generating images with the disclosed inks in ink jet printing processes, including continuous stream ink jet printing processes. Further, a process for preparing the linear N-hydroxyl substituted polyethyleneimine polymers included in the inks of the present invention is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.