Metal free acid dyes, methods for the production thereof and their use
US8979947B2 · kind B2 · utility
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7References
8Claims
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Key dates
| Filing date | Nov 24, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Nov 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/926
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to dyes of the formula (I) in which R1 to R10, D1 and D2 are defined as given in claim 1, a process for preparing them, and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.