Cosmetic composition containing hydroxylated chalcone derivatives and its use for protecting the skin and the hair against luminous radiations, new hydroxylated chalcone derivatives employed and process for their preparation
US4867964A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Cosmetic composition containing hydroxylated chalcone derivatives and its use for protecting the skin and the hair against luminous radiations, new hydroxylated chalcone derivatives employed and process for their preparation. The invention relates to a cosmetic composition for protecting the skin and the hair against UV rays comprising, in a cosmetically acceptable substrate, at least one derivative of 2-hydroxychalcone of formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of each other, a hydrogen atom, a straight- or branched-chain C.sub.1 -C.sub.12 alkyl group, a straight- or branched-chain C.sub.1 -C.sub.12 alkyl group or a straight- or branched-chain C.sub.2 -C.sub.20 acyloxy group. The invention also relates to new derivatives of 2-hydroxychalcone and the process for their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.