Anthrapyridone compounds, water-based ink composition, and articles colored therewith
US6152969A · kind A · utility
32Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Feb 3, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B5/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the development of a coloring matter which has a moderately bluish magenta color and an excellent lightfastness and can provide a wide range of color tones in the visible range when used together with yellow and cyan inks. A water-base ink composition or the like is prepared by using a sulfonic acid derivative of an anthrapyridone compound represented by general formula (I) as a magenta dye, wherein R.sub.1 ' represents alkoxycarbonyl, carbonyl or benzoyl; R.sub.2 represents hydrogen or alkyl; and R.sub.3 and R.sub.4 represent each independently hydrogen, halogeno, alkyl or alkoxy. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.