Removable imbibition composition of photochromic compound and epoxy and polyol kinetic enhancing additives
AssigneeTransitions Optical, Inc.
InventorsMichael S. Misura, Anil Kumar
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Abstract
Described are imbibition compositions that incorporate kinetic enhancing additive(s) into photochromic polymeric host material. Kinetic enhancing additives include organic polyol(s), epoxy-containing compound(s) or a mixture thereof that improves the performance of organic photochromic compounds in the polymeric host as determined in the Photochromic Performance Test. Also described is a process for incorporating kinetic enhancing additives into polymeric substrates prior to, after and/or with organic photochromic compounds and the resulting photochromic articles produced by such a process.
Claims16
A removable imbibition composition comprising:
- (a) a photochromic performance improving amount of kinetic enhancing additive(s) comprising polyols or a mixture of polyols and epoxy-containing compounds;
- and
- (b) photochromic compound(s),
- wherein upon the application of the composition to the surface of an organic polymeric article, the kinetic enhancing additive(s) and photochromic compound(s) are transferred into the polymeric article and the residual imbibition coating(s) formed from the composition(s) is removed from the polymeric article.
Dependencies are inferred from the claim text.