Optical Article Comprising an Anti-Smudge Coating

An optical article comprising an optically transparent substrate with a main surface and, covering the main surface, an anti-smudge coating itself at least partially covered by a temporary topcoat, the anti-smudge coating being the result of the hardening of a polymerisable composition comprising: 5...

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Bibliographische Detailangaben
Hauptverfasser:	BAUDE DOMINIQUE, JOUSSELIN CAROLINE
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMISTRY COMPOSITIONS BASED THEREON CONTACT LENSES 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 OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPECTACLES SPRAYING OR ATOMISING IN GENERAL SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	An optical article comprising an optically transparent substrate with a main surface and, covering the main surface, an anti-smudge coating itself at least partially covered by a temporary topcoat, the anti-smudge coating being the result of the hardening of a polymerisable composition comprising: 55% to 80% by weight, preferably to by weight, of a first component A selected among fluorinated compounds, of which only one end of the chain comprises at least one silanol group or silanol precursor and their mixtures, and 45% to 20% by weight of a second component B selected among linear fluorinated compounds, preferably perfluorinated compounds, of which both ends of the chain comprise at least one silanol group or silanol precursor and their mixtures, for 100% by weight of the first component A and the second component B. The first component A and the second component B together accounting for at least 50% by weight of the total weight of the coating. Application to ophthalmic lenses.