C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 491/052 (2006.01) C07D 221/00 (2006.01) C07D 221/18 (2006.01) C07D 311/00 (2006.01) C08G 73/06 (2006.01) C08K 5/3415 (2006.01) G02B 5/23 (2006.01) G02C 7/10 (2006.01) G03C 1/73 (2006.01)
Patent
CA 2375857
The invention relates to novel naphthopyran-type compounds having a lactam- type 6-membered ring annelated in position C5-C6. 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 de nouveaux composés du type naphtopyranes comportant un noyau du type lactame à 6 éléments annelé en position C¿5?-C¿6?. Ces composés, qui sont représentés par la formule (I), ont des propriétés photochomiques intéressantes. L'invention concerne également leur préparation, leurs applications comme photochromes, ainsi que les compositions et les matrices (co)polymères les renfermant.
Corning S.a.
Gowling Lafleur Henderson Llp
LandOfFree
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