Black trisazo dyes, their preparation and their use
US10259942B2 · kind B2 · utility
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2References
19Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 11, 2015 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Nov 11, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/328
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides trisazo dyes of formula (V), wherein A, M and R1, R2, R3, R4 are as defined in the specification, processes for their preparation, recording liquids and liquid dye preparations containing them and their use in inks as well as processes for applying them and printed articles comprising them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.