Photochromic Composition with Polyol and Poly(anhydride)

Provided is a curable photochromic coating composition including (a) a polyol component, (b) a poly(anhydride) having at least three cyclic anhydride groups, (c) a secondary crosslinker, and (d) a photochromic material. The polyol component includes (i) a first polyol having two hydroxyl groups and...

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Bibliographische Detailangaben
Hauptverfasser:	Kumar, Anil, Veldkamp, Brad S, Reddy, Ramaiahgari
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS 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 USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Provided is a curable photochromic coating composition including (a) a polyol component, (b) a poly(anhydride) having at least three cyclic anhydride groups, (c) a secondary crosslinker, and (d) a photochromic material. The polyol component includes (i) a first polyol having two hydroxyl groups and a hydroxyl equivalent weight of at least 15,000 g/mol and (ii) a second polyol different from the first polyol having at least three hydroxyl groups and a hydroxyl equivalent weight of at least 300 g/mol. The secondary crosslinker is selected from a poly(carbodiimide), an oxazoline-functional material, or mixtures thereof. The present invention also provides an optical article prepared from the curable photochromic coating composition.