Photochromic compositions, preparation thereof and articles...

Details Photochromic compositions, preparation thereof and articles... Photochromic compositions, preparation thereof and articles...

2007-08-28

2007-08-28

Anthony, Joseph D. (Department: 1714)

Compositions

Light transmission modifying compositions

Displaying color change

C252S589000, C252S582000, C252S182110, C524S590000, C524S589000, C524S094000, C524S095000, C524S104000, C524S110000

Reexamination Certificate

active

10393849

ABSTRACT:
The present invention relates to novel cross-linkable or crosslinked photochromic compositions, articles made from or coated with the compositions and method of making the compositions. The compositions contain (i) at least one segmented or non-segmented polyurethane-type or polyurethane-urea-type linear polymer having at least one non-terminal moiety that comprises at least one unsaturated group; and (ii) an effective amount of at least one photochromic organic compound, advantageously selected from spiroxazines, chromenes, spiropyrans fulgides and fulgimides.

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