Fluoran derivatives and recording material using same
US4535348A · kind A · utility
6Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1982 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Jul 6, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D493/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Fluoran derivatives having an arylamino group at 2-position of the fluoran skeleton thereof and a halogen atom at 3-position of the flouran skeleton thereof, useful as a dye precursor in recording materials such as heat-sensitive, pressure-sensitive, energizable heat-sensitive, and light-sensitive recording sheets and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.