Azo dye compound
US7629459B2 · kind B2 · utility
1Cited by
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1Claims
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Inventors
Key dates
| Filing date | Nov 17, 2005 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Oct 22, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound represented by formula (I):Formula (I)wherein Z1 is atoms necessary for forming an aromatic ring; Z2 is atoms necessary for forming an aromatic hetero ring; V1 and V2 each are a substituent, and at least one of V1 and V2 is a hydroxyl, primary- or secondary- or tertiary-amino, acylamino, or sulfonamido group; r is 1 to 4; s is 1 to 4; the ring formed by Z1 or Z2 may have a substituent other than V1 or V2; M1 is a counter ion; m1 is the number necessary for neutralizing charge; and X1 and X2 each are a carbon or hetero atom, and at least one of X1 and X2 is a hetero atom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.