C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 493/04 (2006.01) C07D 307/00 (2006.01) C07D 307/77 (2006.01) C07D 311/00 (2006.01) C07D 333/00 (2006.01) C07D 333/76 (2006.01) C07D 495/04 (2006.01) C08F 20/10 (2006.01) C08F 24/00 (2006.01) C08K 5/15 (2006.01) C08L 37/00 (2006.01) C08L 41/00 (2006.01) G02B 5/23 (2006.01) G03C 1/72 (2006.01)
Patent
CA 2375867
The invention relates to novel benzopyran-type compounds having an aromatic heterocycle annelated in position 7,8 and a carbocycle annelated in position 5,6. These compounds have formula (I). These compounds (I) have interesting photochromic properties. The invention also relates to their preparation, to their applications as photochromes, as well as to the compositions and (co)polymer matrices containing them.
L'invention concerne des nouveaux composés de type benzopyrane présentant un hétérocycle aromatique annelé en position 7,8 et un carbocycle annelé en position 5,6. Ces composés correspondent à la formule (I) et présentent des propriétés photochromique intéressantes. L'invention concerne également leur préparation, leurs applications en tant que photochromes, ainsi que les compositions et les matrices (co)polymères les contenant.
Breyne Olivier
Chan You-Ping
Jean Patrick
Corning S.a.
Gowling Lafleur Henderson Llp
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