Recording material
US5071822A · kind A · utility
4Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C323/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a recording material employing an electron donating colorless dye and an electron accepting compound, an improvement being present in that said electron accepting compound is a compound represented by the formula: ##STR1## wherein Ar represents a phenyl group, a substituted phenyl group, a benzyl group, a substituted benzyl group, a naphthyl group or a substituted naphthyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.