CURABLE PHOTOCHROMIC COMPOSITIONS INCLUDING ISOCYANATE AND IMINE FUNCTIONAL COMPONENTS

The present invention relates to, a curable photochromic composition that includes: (a) a photochromic compound; (b) a polyisocyanate including at least two isocyanate groups; and (c) a reactive component having at least two reactive groups that are each reactive with the isocyanate groups of the po...

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Bibliographische Detailangaben
Hauptverfasser:	RAMAIAHGARI, Reddy, KUMAR, Anil
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to, a curable photochromic composition that includes: (a) a photochromic compound; (b) a polyisocyanate including at least two isocyanate groups; and (c) a reactive component having at least two reactive groups that are each reactive with the isocyanate groups of the polyisocyanate. Each reactive group of the reactive component is independently selected from primary amine and imine, provided that at least one reactive group of the reactive component is selected from imine. The curable photochromic composition further includes (d) a non-reactive component that is free of functional groups that are reactive with the polyisocyanate and said reactive component. The present invention also relates to an article that includes: a substrate; and a photochromic layer over at least one surface of the substrate, where the photochromic layer is formed from the curable photochromic composition of the present invention. La présente invention concerne une composition photochromique durcissable comprenant : (a) un composé photochromique ; (b) un polyisocyanate comprenant au moins deux groupes isocyanate ; et (c) un composant réactif ayant au moins deux groupes réactifs qui sont chacun réactifs avec les groupes isocyanate du polyisocyanate. Chaque groupe réactif du composant réactif est indépendamment choisi parmi l'amine primaire et l'imine, à condition qu'au moins un groupe réactif du composant réactif soit choisi parmi l'imine. La composition photochromique durcissable comprend en outre (d) un composant non réactif exempt de groupes fonctionnels réactifs avec le polyisocyanate et ledit composant réactif. La présente invention concerne également un article comprenant : un substrat ; et une couche photochromique sur au moins une surface du substrat, la couche photochromique étant constituée de la composition photochromique durcissable de la présente invention.