Scratch-resistant and weather-resistant laminates based on polycarbonate
AssigneeBayer Aktiengesellschaft
InventorsWolfgang Cohnen, Frank Kleiner, Gerhard Kranz
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Abstract
The present invention relates to a clear and transparent, scratch-resistant and weather-resistant laminate of high impact strength, consisting of a polycarbonate layer which, on at least one of its surfaces, carries a polyacrylate coating which, on its outer surface, is coated with a scratch-resistant and weather-resistant covering of a hydroxylated fluoropolymer which is cross-linked with methylmelamine and/or polysilicic acid. The present invention also relates to a process for the production of said scratch-resistant laminate.
Claims19
A laminate comprising a polycarbonate layer which carries, on at least one of its surfaces, an uncrosslinked polyacrylate layer having a coating of a hydroxylated fluoropolymer crosslinked with methylmelamine, polysilicic acid or both on its outer surface.
A process for the production of a laminate comprising applying an uncrosslinked polyacrylate coating to a polycarbonate substrate and covering the polyacrylate layer with a hydroxylated fluoropolymer coating which is then crosslinked with methylmelamine, polysilicic acid or both.
A process for the production of a laminate comprising applying an uncrosslinked polyacrylate film to a polycarbonate substrate and covering the polyacrylate film with a hydroxylated fluoropolymer coating which is then crosslinked with at least one of methylmelamine and polysilicic acid.
A process for the production of a laminate comprising applying an uncrosslinked polyacrylate film, coated with a hydroxylated fluoropolymer crosslinked with methylmelamine, to a polycarbonate substrate, so that the fluoropolymer coating forms the outer surface of the laminate.
Dependencies are inferred from the claim text.