Phenolsulfonic acid aryl ester, developing agent, and heat-sensitive recording material
US9073376B2 · kind B2 · utility
1Cited by
1References
20Claims
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Key dates
| Filing date | Oct 31, 2012 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Oct 31, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C309/77
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a compound represented by the formula (1). The compound represented by the formula (1) is a developing agent superior in both color-developing sensitivity with low energy and image stability [in the following formula, wherein R1 is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group,
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.