Carbanilate compound for erythemal protection
US3965144A · kind A · utility
2Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1973 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Oct 10, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C271/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds are provided for reducing erythemal response which are photoreactive precursors to para-aminobenzoic acid or its physiologically acceptable esters. Upon exposure to ultraviolet radiation of greater than about 280nm, the compounds of this invention undergo a photoreactive degradation to provide a regulated amount of a sunscreen material which screens out ultraviolet radiation which could lead to erythema. The compounds are benzyl esters of p-carboxycarbanilic acid and the dermatological and physiological acceptable esters of the carboxy group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.