C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 493/04 (2006.01) C07D 491/04 (2006.01) C08K 5/15 (2006.01) G02B 5/23 (2006.01)
Patent
CA 2389764
The invention relates to novel compounds of the naphthopyran type with a fused heterocycle in the 5,6-position. These compounds have formula (I) or (II). These compounds (I) or (II) have valuable photochromic properties. The invention further relates to their preparation, to their applications as photochromic substances and to the compositions and matrices comprising them.
L'invention concerne des composés du type naphtopyrane ayant un hétérocycle condensé en position 5,6. Ces composés répondent à la formule (I) ou (II) et présentent des propriétés photochromiques précieuses. L'invention concerne en outre leur préparation, leurs applications comme substances photochromiques, ainsi que les compositions et les matrices contenant ces composés.
Breyne Olivier
Chan You-Ping
Jean Patrick
Corning S.a.
Gowling Lafleur Henderson Llp
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