| 摘要 |
The disclosed method comprises applying a transparent coating composition to a plastics substrate, the composition comprising;30% to 60% by weight of a nanoparticles (B), 15% to 40% by weight, of urethane (meth)acrylates (A1) having 3 to 5 (meth)/acrylate groups per molecule, 0% to less than 10% by weight of urethane (meth)acrylates (A2) having more than 5 (meth)/acrylate groups per molecule, 0% to less than 10% by weight of urethane (meth)acrylates (A3) having less than 3 (meth)/acrylate groups per molecule, 55% to 80% by weight of compounds (C1) having 4 (meth)/acrylate groups per molecule, 0% to 15% by weight of compounds (C2) having 2 (meth)/acrylate groups per molecule, and 0% to 15% by weight of compounds (C3) having 3 (meth)/acrylate groups per molecule, the sum of the weight fractions of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3) being in each case 100% by weight. |
| 主权项 |
1. A method of coating a plastic substrates comprising applying a transparent coating composition to the plastic substrate, the transparent coating composition comprising at least one radiation-curable urethane (meth)acrylate (A), nanoparticles (B), reactive diluents (C), and, optionally, solvents to the plastics substrate, said the transparent coating composition further comprising
(i) 30% to 60% by weight, based on the total weight of components (A1), (A2), (A3), (B), (C1), (C2), and (C3), of nanoparticles (B), (ii) 15% to 40% by weight, based on the total weight of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3), of one or more urethane (meth)acrylates (A1) having on average 3 to 5 acrylate and/or methacrylate groups per molecule, (iii) 0% to less than 10% by weight, based on the total weight of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3), of one or more urethane (meth)acrylates (A2) having on average more than 5 acrylate and/or methacrylate groups per molecule, (iv) 0% to less than 10% by weight, based on the total weight of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3), of one or more urethane (meth)acrylates (A3) having on average less than 3 acrylate and/or methacrylate groups per molecule, (v) 55% to 80% by weight, based on the total weight of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3), of one or more monomeric and/or oligomeric compounds (C1), different from components (A1), (A2), and (A3), and having 4 acrylate and/or methacrylate groups per molecule, (vi) 0% to 15% by weight, based on the total weight of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3), of one or more monomeric and/or oligomeric compounds (C2), different from components (A1), (A2), and (A3), and having 2 acrylate and/or methacrylate groups per molecule, (vii) 0% to 15% by weight, based on the total weight of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3), of one or more monomeric and/or oligomeric compounds (C3), different from components (A1), (A2), and (A3), and having 3 acrylate and/or methacrylate groups per molecule, the sum of the weight fractions of film-forming components (A1), (A2), (A3), (C1), (C2), and (C3) being 100% by weight, wherein components (A1), (A2) and (A3) are weight fractions of the at least one radiation-curable urethane (meth)acrylate) (A) and components (C1), (C2), and (C3) are weight fractions of the reactive diluents (C). |
