Organic photochromic materials with high refractive index, their preparation and articles formed from these materials

The invention relates to organic photochromic materials consisting of a polymer matrix of optical quality and of at least one dye that imparts photochromic properties to the matrix, the dye being selected from spirooxazines, spiropyrans and chromenes. The polymer constituting the matrix is a copolym...

Full description

Saved in:
Bibliographic Details
Main Authors Y. P. CHAN, D. HENRY, R. MEYRUEIX
Format Patent
LanguageEnglish
Published 14.01.1998
Edition6
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
Online AccessGet full text

Cover

More Information
Summary:The invention relates to organic photochromic materials consisting of a polymer matrix of optical quality and of at least one dye that imparts photochromic properties to the matrix, the dye being selected from spirooxazines, spiropyrans and chromenes. The polymer constituting the matrix is a copolymer of 30-95 wt.% ethoxylated bisphenol A dimethacrylate and 5-70 wt.% of a polyurethane oligomer having terminal di- or triacrylic or di- or trimethacrylic functionality. Such photochromic materials are most suitable for the production of ophthalmic and sun protection lenses.
Bibliography:Application Number: CN19951096930