Photochromic compositions and light transmissible articles

Details Photochromic compositions and light transmissible articles Photochromic compositions and light transmissible articles

2007-07-10

2010-10-05

Choi, Ling-Siu (Department: 1796)

Compositions

Light transmission modifying compositions

Displaying color change

C252S582000, C359S326000, C549S331000, C549S381000

Reexamination Certificate

active

07807075

ABSTRACT:
The invention relates 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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