IMPRESSION COMPOSITION

• Main Author: KLENKE, MARTIN
• Format: Patent
• Language: English; French; German
• Published: 15.02.2012
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PHYSICS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

Transparent molded part (I) comprises a sheet-like substrate and, provided on a major surface of the substrate, a layer having a layer thickness of 3-300 mu m and consisting of a solvent-free polymerized composition containing 35-75 wt.% of at least one partially fluorinated acrylate, 24.9-60 wt.% of at least one non-fluorinated acrylate, and 0.1-5 wt.% of at least one photoinitiator, where the layer has a surface structure with diffractive surface elements having a maximum structural size of defects of such surface elements of up to 100 nm on the surface facing away from the substrate. Transparent molded part (I) comprises a sheet-like substrate and, provided on a major surface of the substrate, a layer having a layer thickness of 3-300 mu m and consisting of a solvent-free polymerized composition containing 35-75 wt.% of at least one partially fluorinated acrylate, 24.9-60 wt.% of at least one non-fluorinated acrylate, and 0.1-5 wt.% of at least one photoinitiator, where the layer has a surface structure with diffractive surface elements having a maximum structural size of defects of such surface elements of up to 100 nm on the surface facing away from the substrate, and the composition contains luminescent pigments. Independent claims are included for: (1) pressureless process for the preparation of (I) comprising: providing a negative casting mold with shapings of surface elements; introducing the impression composition into the negative casting mold in an amount exceeding the shapings of the surface elements; applying a substrate to the exposed surface of the impression composition; polymerizing the impression composition to bond the layer of the impression composition with the substrate for preparing a molded part; and removing the finished molded part from the negative casting mold; and (2) impression composition comprising: 35-75 wt.% of least one partially fluorinated acrylate; 24.9-60 wt.% of at least one non-fluorinated acrylate; and 0.1-5 wt.% of at least one photoinitiator, where the composition contains luminescent pigments.