Cosmetic screening emulsion comprising a UV-A screening agent and a UV-B screening agent and its use for skin protection against ultraviolet radiation
US5302376A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1991 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | May 7, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q17/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a cosmetic emulsion screening out UV radiation of wavelengths between 280 and 400 nm comprising in the oil phase, 2,4,6-tris[[p-(2'-ethylhexyl-1'-oxycarbonyl)anilino]-1,3,5-triazine and, in the aqueous phase, benzene-1,4-[bis(3-methylidenecamphormethylsulphonic)] acid, partially or completely neutralised, of formula: ##STR1## in which A designates a hydrogen atom, an alkali metal, a N(R).sub.4.sup.+ group, R designating a hydrogen atom or a C.sub.1 -C.sub.4 alkyl or hydroxyalkyl radical, or a M.sup.n+ /n group where M.sup.n+ is a polyvalent metal cation in which n is equal to 2 or 3 or 4, M.sup.n+ preferably designating Ca.sup.2+, Zn.sup.2+, Mg.sup.2+, Ba.sup.2+, Al.sup.3+ or Zr.sup.4+. The cosmetic screening emulsion according to the invention possesses an improved protection index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.