C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 407/04 (2006.01) C07D 405/04 (2006.01) C07D 405/14 (2006.01) C08K 5/00 (2006.01) C08K 5/1545 (2006.01) G02B 5/23 (2006.01) G02B 27/00 (2006.01) G02F 1/01 (2006.01) G02F 1/17 (2006.01)
Patent
CA 2164949
Described are novel reversible photochromic naphthopyran compounds, examples of which are compounds substituted at the 3 position of the pyran ring with (i) an aryl substituent and (ii) a phenyl substituent having a 5- or 6-member heterocyclic ring fused at the number 3 and 4 carbon atoms of the phenyl substituent. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.
L'invention se rapporte à des nouveaux composés photochromes réversibles du naphtopyranne, des exembles de ceux-ci étant des composés substitués en position 3 du cycle pyranne avec (i) un substituant aryle et (ii) un substituant phényle ayant additionné aux positions 3 et 4 de son cycle un noyau hétérocyclique à 5 ou 6 membres. L'invention se rapporte également à des matériaux hôtes organiques qui contiennent ces composés ou qui en sont recouverts. L'invention concerne enfin des articles tels que des lentilles ophtalmiques ou d'autres matériaux transparents en plastique incorporant ces nouveaux composés du naphtopyranne ou des combinaisons de ceux-ci avec des composés photochromes complémentaires, par exemple des composés du type spiro(indoline).
Borden Ladner Gervais Llp
Ppg Industries Inc.
Transitions Optical Inc.
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