Binder with barrier properties

A binder with barrier properties comprising:

• i. 5 to 45% by weight of at least one compound containing at least one radiation-curable reactive functional group flowable at 20° C. to 80° C. and selected from the group consisting of (meth)acrylic acid homopolymers, (meth)acrylic acid copolymers, polyester(meth)acrylates, epoxy(meth)acrylates and polyurethane(meth)acrylates as component (A);
• ii. 10 to 60% by weight of at least one compound containing at least one radiation-curable reactive functional group and at least one COOH group selected from the group consisting of polyether-polyol-based acid-modified (meth)acrylates, acylated carboxylic-acid-terminated polyesters, and acid-modified polybutadienes as component (B);
• iii. 30 to 40% by weight of amorphous silicon dioxide having a mean particle size between 10 and 25 nm as component (C);
• iv. 0.3 to 40% by weight of at least one organosilicon compound selected from the group consisting of 3-aminopropyl trimethoxysilane, 3-aminopropyl dimethoxysilane, 3-aminopropyl triethoxysilane, 3-aminopropyl dimethoxyphenyl silane and 3-aminopropyl diethoxysilane, 3-aminopropyl trimethoxysilane, and bis-(3-triethoxysilylpropyl)-amine as component (D);
• v. 0 to 12% by weight of at least one metal compound corresponding to formula (V)
• MRx9 (V)
• in which
• M=Ge, Sn, Pb, Ti, Zr, B, or Al;
• x=3 or 4;
• R9=halogen, hydroxyl, alkoxy, or alkoxycarboxyl group, wherein the R9 groups may the same or different, as component (E);
• vi. 0.1 to 5% by weight of at least one photoinitiator as component (F);
• vii. 0 to 50% by weight of one or more additives selected from the group consisting of plasticizers, catalysts, stabilizers, dispersants, antioxidants, dyes, fillers and agents for influencing the fluidity of the dispersion of component (C) in component (A), (B) or (D), as component (G);
• the sum total of the above-mentioned components being 100% by weight.