C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 311/94 (2006.01) C07D 311/00 (2006.01) C07D 311/92 (2006.01) C07D 311/96 (2006.01) C07D 335/04 (2006.01) C07D 471/00 (2006.01) C07D 493/04 (2006.01) C08G 65/02 (2006.01) C08G 85/00 (2006.01) C08K 5/15 (2006.01) C08K 5/1545 (2006.01) C08L 101/00 (2006.01) G02B 1/00 (2006.01) G02B 5/23 (2006.01) G02C 7/10 (2006.01) C07B 61/00 (2006.01)
Patent
CA 2351548
The invention relates to novel naphthopyrans having a cyclic group annelated in position 6, 7. These naphthopyrans have formula (I). These compounds (I) have advantageous photochromic properties. The invention also covers the method of preparing these naphthopyrans, as well as their applications as photochromes : compositions and (co)polymers matrices comprising them.
L'invention concerne de nouveaux composés naphtopyranes renfermant un groupe cyclique accolé en position 6, 7, de formule (I). Ces composés (I) possèdent des propriétés photochromiques intéressantes. L'invention concerne également un procédé permettant de préparer lesdits composés (I), ainsi que leurs applications comme photochromes et des compositions et matrices (co)polymères les contenant.
Chan You-Ping
Jean Patrick C.
Corning Incorporated
Gowling Lafleur Henderson Llp
LandOfFree
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