| 摘要 |
A planar, multilayered, laser-optical recording material comprises (a) a dimensionally stable, optically clear base material composed of a plastics substance and having a structured surface, (b) a superposed intermediate layer which is insoluble in organic solvents and which acts as a diffusion barrier thereagainst, and superposed thereon (c) an amorphous, thermally alterable, dye-containing recording layer producible by application from a solution and drying, wherein said intermediate layer (b) (b1) is from 5 to 95 nm thick and, based on (b), consists of (b2) from 88 to 99.5% by weight of an oxide and/or hydrated oxide of one or more of the elements of the group consisting of titanium, zirconium, hafnium, thorium, vanadium, niobium, tantalum, tungsten, aluminum, gallium, indium, silicon, germanium and tin and of (b3) from 0.5 to 12% by weight of a hydrocarbyl and (b4) is producible by dissolving one or more alkoxides of one or more of the abovementioned elements in a polar liquid medium essentially comprising a C1-C6-alkanol, applying this solution to the surface of base material (a) and heat-treating the moist layer obtainable in this way in the presence of water at from 50 DEG to 120 DEG C. for from 5 minutes to 2 hours.
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