Thermosensitive recording material
US5246906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C311/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A thermosensitive recording material capable of recording thereon colored images having high resistances to oily substances, plasticizers, moisture, and heat and an excellent storage persistency over a long time, comprises a thermosensitive colored image-forming layer formed on a sheet substrate and comprising a colorless dye precursor, a color developing agent, and a binder, the color developing agent comprising at least one compound of the formula (I): ##STR1## wherein X is an O or S atom, R.sup.1 is an unsaturated aromatic group or a substituted phenyl group having a lower alkyl or halogen atom and R.sup.2 and R.sup.3 are respectively a hydrogen atom, alkyl, aralkyl, substituted alkyl having an aryloxy, unsubstituted aromatic group, or substituted aromatic group having at least one substituent selected from alkyl, aryl, aralkyl, alkyloxy, alkyloxycarbonyl, aryloxycarbonyl, aralkyloxycarbonyl, and arylsulfonyl groups, and halogen atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.