Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 24, 2007
Patent Application Number
11121293
Date Filed
May 3, 2005
Patent Primary Examiner
Patent abstract
The invention related to a photochromic polymeric composition comprising a polymer matrix and a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendant oligomer group to provide a rate of fade of the photochromic polymeric composition which is significantly changed when compared with the corresponding composition comprising the photochromic compound without said pendent oligomer. The invention also relates to a photochromic compound which is an adduct comprising a photochromic moiety and at least one pendent oligomer.
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