Heat-sensitive transfer sheet containing blue dyestuff
US5567470A · kind A · utility
4Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1995 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Aug 18, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0046
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A blue dyestuff represented by the formula (2) ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is independently a hydrogen atom, halogen atom, nitro group, hydroxy group, alkyl group which may have a substituent, alkoxy group, alkylsulfonylamino group or alkylcarbonylamino group, and each of R.sub.4 and R.sub.5 is independently an alkyl group which may have a substituent, and a heat-sensitive transfer sheet containing the above-mentioned dyestuff.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.