COMPOSITION FOR COATING OF OPTICAL SUBSTRATES AND THE USE THEREOF

Black coatings on optical substrates, compositions for producing such coatings and the use of the compositions for edge-blackening and stray light control. The present coatings comprise a film formed by a cured polymer mixed with nanoparticles and black pigment, wherein the film has a refractive ind...

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Bibliographische Detailangaben
Hauptverfasser:	POUTANEN, Mikko, HEIKKINEN, Jarkko, MASUDA, Noriyuki, JÄÄSKELÄINEN, Juha
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Black coatings on optical substrates, compositions for producing such coatings and the use of the compositions for edge-blackening and stray light control. The present coatings comprise a film formed by a cured polymer mixed with nanoparticles and black pigment, wherein the film has a refractive index of more than 1.6. The present compositions comprise 5 to 100 parts by weight of a curable polymer; 5 to 100 parts by weight of nanoparticles; and 0.1 to 20 parts by weight of black pigment, and the nanoparticles and black pigment are mixed with the curable polymer. The present compositions exhibit RI values which match that of high-RI glass substrates while providing efficient edge-blackening properties.