Removable imbibition composition of photochromic compound and epoxy and polyol kinetic enhancing additives
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United States of America Patent
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Mar 30, 2004
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app pub date -
Jun 14, 2002
filing date -
Nov 28, 2000
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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.
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