Uv light-protective agent based on mixed inorganic-organic systems
AssigneeBASF SE
InventorsStephan Lehmann, Richard Riggs, Valerie Andre
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Abstract
The present invention relates to photoprotective preparations, in particular in the field of cosmetics, based on inorganic-organic mixed systems. The present invention relates in particular to photoprotective preparations comprising nanoparticles of at least one metal derivative, at least one photoprotective compound chemically bonded to these metal derivative nanoparticles, and at least one further organic UV photoprotective agent which is different from the photoprotective compound bonded to the metal derivative nanoparticles.
Claims7
1-6. (canceled)
A photoprotective preparation comprising
- nanoparticles of at least one metal derivative
- at least one structural unit chemically bonded to the nanoparticles of at least one metal derivative, selected from the group consisting of derivatives of triazine, derivatives of hydroxybenzophenone and derivatives of 4,4′diarylbutadiene.
The photoprotective preparation according to claim 1, comprising at least one further organic UV photoprotective agent different from the UV photoprotective agent bonded to the nanoparticles.
A photoprotective preparation comprising
- nanoparticles of at least one metal derivative,
- at least one organic UV photoprotective agent chemically bonded to the nanoparticles of at least one metal derivative and
- at least one further organic UV photoprotective agent which is different from the UV photoprotective agent bonded to the nanoparticles and different from octyl methoxycinnamate.
The photoprotective preparation according to claim 2, where the at least one further organic UV photoprotective agent is selected from the group consisting of 2-ethylhexyl 2-cyano-3,3-diphenylacrylate (CAS No. 6197-30-4), ethylhexyl salicylate (CAS No. 118-60-5), homosalate (CAS No. 118-56-9), dimethicodiethyl benzalmalonate (CAS No. 207574-74-1) and mixtures thereof.
The photoprotective preparation according to claim 1, further comprising dihydroxyacetone.
The photoprotective preparation according to claim 1, where the metal derivative is selected from the derivatives of titanium and/or zinc.
Dependencies are inferred from the claim text.