Moulding composition for preparation of precision optics

Solvent-free casting composition (A) comprises at least a partially-fluorinated acrylate (35-75 wt.%), at least a non-fluorinated acrylate (24.9-60 wt.%) and at least one photoinitator (0.1-5 wt.%). Independent claims are included for: (1) a transparent molded article comprising a laminar substrate...

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Bibliographic Details
Main Authors KLENKE, MARTIN, BENTHIEN, THOMAS
Format Patent
LanguageEnglish
French
German
Published 12.09.2007
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Solvent-free casting composition (A) comprises at least a partially-fluorinated acrylate (35-75 wt.%), at least a non-fluorinated acrylate (24.9-60 wt.%) and at least one photoinitator (0.1-5 wt.%). Independent claims are included for: (1) a transparent molded article comprising a laminar substrate and a layer (with thickness of 3-300 Pm), where the layer is provided on the main surface of the substrate and has a surface structure with the diffractive surface elements with maximum structure size of 100 nm by lacking formation; and (2) a pressure-free method for preparing the molded article comprising allocating the negative mold with end formation of surfaces elements; bringing (A) into the negative mold in a quantity, which exceeds the end formation of the surfaces elements; applying (A) on the free-surface of the substrate, polymerizing (A) and the layer containing (A) with the substrate for preparing the molded article; and extracting the obtained molded article from the negative mold.
Bibliography:Application Number: EP20050101887