Sulphur derivatives of para-methoxycinnamic acid, processes for their production, dermo-pharmaceutical and cosmetic compositions containing them and applications
US4791217A · kind A · utility
4Cited by
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11Claims
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Key dates
| Filing date | Apr 9, 1986 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Apr 9, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B37/005
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Sulphur-containing derivatives of para-methoxycinnamic acid presenting a disulphur bridge and an amino-acid group, preparation process thereof. Applications as active ingredients in dermo-pharmaceutical and cosmetological preparations wherein they exert an activity of solar filters which substantially do not penetrate in the circulatory stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.