Patent ID: 9696460
Date: 2017-07-04
CPC Classifications: B01J,D06M,G02B,Y10T

Claim:
1. 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.