Anti-UV nanoparticles
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsOlivier Poncelet, Olivier Renard
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Abstract
The invention relates to nanoparticles having a core that is fully or partially formed by at least one UV-absorbing organic compound in crystallized form and coated with an outer layer formed by at least one hydrophilic polymer, said UV-absorbing organic compound(s) and hydrophilic polymer(s) being associated in a weight ratio of organic compound(s) to hydrophilic polymer(s) varying between 0.2 and 0.4.
Claims15
A nanoparticle comprising a core consisting of one or more UV-absorbing organic compound(s), in crystalline form, the core is coated with an outer layer formed of one or more hydrophilic polymer(s), said UV-absorbing organic compound(s) and hydrophilic polymer(s) being combined in an organic compound(s)/hydrophilic polymer(s) ratio by weight varying from 0.2 to 0.4, wherein said hydrophilic polymer(s) comprises at least one of a polyvinyl alcohol having a molecular weight ranging from 25,000 to 100,000 g/mole, a polyacrylic acid having a molecular weight ranging from 100,000 to 600,000 g/mole, or a combination thereof.
Dependencies are inferred from the claim text.