Azomethine compound and thermal transfer sheet using coloring matter of the azomethine compound
US8440589B2 · kind B2 · utility
2Cited by
3References
12Claims
0Family size
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Key dates
| Filing date | Mar 31, 2010 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Dec 10, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B55/009
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides an azomethine compound that can realize a good coupling reaction and, at the same time, can significantly reduce the production cost of the azomethine compound, the azomethine compound comprising a pyridine ring bonded through a nitrogen atom to a 1H-pyrazolo[1,5-b][1,2,4]triazole ring. The azomethine compound is represented by formula (M-I):wherein R1 represents a phenyl group or a naphthyl group optionally substituted by an alkyl group or a halogen; and R2 and R3 each independently represent a C2-4 (number of carbon atoms) alkyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.