PHOTOCHROMIC COMPOSITIONS AND ARTICLES COMPRISING SILOXANE, ALKYLENE OR SUBSTITUTED ALKYLENE OLIGOMERS
This invention relates to a polymerizable composition for forming a photochromic article having a glass transition temperature of at least 50° C. on curing the composition comprising: (a) a polymerizable composition comprising a monomer component; and (c) a photochromic dye monomer comprising a phot...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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