Method of imparting impact resistance to a plastic ophthalmic lens, compositions for use therein and a lens prepared thereby

A method is disclosed for imparting impact resistance to a plastic ophthalmic lens. The method consists of applying a coating of a multifunctional acrylate in a solvent mixture to the back surface of the lens, and curing the multifunctional acrylate to form an impact resistance imparting coat. The m...

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Hauptverfasser: SIDNEY S WHITE, HOA T DANG, KELLY BENJAMIN, ROBERT A VALERI, SHEILA M TATMAN, JULIE S BERZON
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creator SIDNEY S WHITE
HOA T DANG
KELLY BENJAMIN
ROBERT A VALERI
SHEILA M TATMAN
JULIE S BERZON
description A method is disclosed for imparting impact resistance to a plastic ophthalmic lens. The method consists of applying a coating of a multifunctional acrylate in a solvent mixture to the back surface of the lens, and curing the multifunctional acrylate to form an impact resistance imparting coat. The multifunctional acrylate preferably has at least about 40%, by weight, of a difunctional acrylate. The multifunctional acrylate preferably has a glass transition temperature less than about 60 DEG C. Lenses with an impact resistance imparting coat on the back, and an abrasion resistant coat on at least the front of the lens, are also disclosed.
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subjects ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CONTACT LENSES
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PHYSICS
POLISHES
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
USE OF MATERIALS THEREFOR
WOODSTAINS
title Method of imparting impact resistance to a plastic ophthalmic lens, compositions for use therein and a lens prepared thereby
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