Photochromic bis-naphthopyran compounds and methods for...

Details Photochromic bis-naphthopyran compounds and methods for... Photochromic bis-naphthopyran compounds and methods for...

C - Chemistry, Metallurgy

07

D

C07D 409/14 (2006.01) C07D 409/04 (2006.01) G02B 5/23 (2006.01)

Patent

CA 2459866

The invention provides photochromic bis-naphthopyran compounds of formula (I), as well as methods for their manufacture and their use. The bis-naphthopyran compounds of the invention exhibit a wide range of color, i.e., from pink to purple to blue gray, upon activation by a source of UV light. Additionally, the bis-naphthopyran compounds of the present invention exhibit broad coloration ability, fast response as to both color change on activation and return to original color, and good fatigue-resistance.

L'invention porte sur des composés photochromes de bis-naphthopyran de formule (I) et sur leurs procédés de fabrication et d'utilisation. Lesdits composés, qui peuvent une grande variété de colorations, soit du rose au violet au bleu gris, lorsqu'activés par une source d'UV, présentent une large capacité de coloration et une réponse rapide en ce qui concerne les changements de couleur suite à une activation ou le retour à la couleur initiale, ainsi qu'une bonne résistance à la fatigue.

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