PRODUCTION METHOD FOR PHOTOCHROMIC OPTICAL MATERIAL

The process for producing photochromic optical materials of the present invention includes a step (i) of reacting at least one polymerizable monomer (A) having two or more ethylene-based unsaturated groups with at least one polythiol (B) having two or more mercapto groups to obtain a prepolymer; a s...

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Bibliographische Detailangaben
1. Verfasser:	RYU, Akinori
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The process for producing photochromic optical materials of the present invention includes a step (i) of reacting at least one polymerizable monomer (A) having two or more ethylene-based unsaturated groups with at least one polythiol (B) having two or more mercapto groups to obtain a prepolymer; a step (ii) of mixing the prepolymer and a photochromic compound (C) to obtain a polymerizable composition; and a step (iii) of polymerizing the polymerizable composition, wherein, before the reaction of the step (i), the molar number of the mercapto groups included in the polythiol (B) is smaller than the molar number of the ethylene-based unsaturated groups included in the polymerizable monomer (A).