COMPOSITIONS, COMPRISING MODIFIED TITANIUM DIOXIDE NANOPARTICLES AND USES THEREOF

    公开(公告)号:EP4234641A1

    公开(公告)日:2023-08-30

    申请号:EP22159029.2

    申请日:2022-02-25

    申请人: BASF SE

    IPC分类号: C09D5/00

    摘要: The present invention relates to compositions, comprising (A) titanium dioxide nanoparticles,
    (A1) which have volume average diameter (Dv50) in the range of from 1 to 10 nm, preferably 1 to 8 nm, more preferably 2 to 6 nm;
    (A2) which are modified with peroxo groups, and
    (A2) which optionally comprise surface modifying agents selected from the group consisting of phosphates, phosphonates, beta-diketones, tertiary amines, carboxylic acids and silanes, or combinations thereof; and
    (B) one, or more reactive (radically polymerizable) diluents, with the proviso that the composition comprises a reactive diluent having at least 2 ethylenically unsaturated groups in the molecule; and
    (C) an organic solvent, and the use of the compositions for coating surface relief micro- and nanostructures (e.g. holograms), manufacturing of optical waveguides, solar panels, light outcoupling layers for display and lighting devices and anti-reflection coatings. Coatings obtained from the coating composition have a high refractive index and holograms are bright and visible from any angle, when the coating compositions are applied to them.