Black dye composition and black ink composition
US7387667B1 · kind B1 · utility
6Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2007 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Sep 13, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/328
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a black dye composition, comprising: wherein R1, R2, R3, and R4 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention is suitable for paper ink-jet printing, and exhibits the properties of good light-fastness, high color strength, solubility, and fine fluency of ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.