Azo dye compound
US7220857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B37/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound represented by formula (I):Formula (I)wherein Z1 and Z2 each are atoms necessary for forming an aromatic ring; V1 and V2 each are a substituent W1 or W2; when at least one V1 is W1, at least one V2 is W2, or when at least one V1 is W2, at least one V2 is W1; r is 1 to 4; s is 1 to 4; M1 is a counter ion; m1 is the number necessary for neutralizing charge; W1 is a hydroxyl, primary- or secondary- or tertiary-amino, acylamino, or sulfonamido group; W2 is a nitro, cyano, alkoxycarbonyl, aryloxycarbonyl, alkyl- or aryl-sulfonyl, carbamoyl, sulfamoyl, alkenyl, alkynyl, aryl, heterocyclic, sulfo, carboxyl, heterocyclic oxy, ammonio, alkyl- or aryl-sulfinyl, alkyl- or aryl-sulfonyl, acyl, or aryl- or heterocyclic-azo group; and the aromatic ring may have a substituent other than V1 and V2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.