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Machine translation
1. (WO1998014443) NOVEL SUBSTITUTED NAPHTHOPYRANS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/014443    International Application No.:    PCT/US1996/015843
Publication Date: 09.04.1998 International Filing Date: 02.10.1996
Chapter 2 Demand Filed:    29.04.1998    
IPC:
C07D 311/92 (2006.01), C08K 5/1545 (2006.01), G02B 5/23 (2006.01)
Applicants: PPG INDUSTRIES, INC. [US/US]; One PPG Place, Pittsburgh, PA 15272 (US)
Inventors: KNOWLES, David, B.; (US).
VAN GEMERT, Barry; (US).
KUMAR, Anil; (US)
Agent: STEIN, Irwin, M.; PPG Industries, Inc., One PPG Place, Pittsburgh, PA 15272 (US)
Priority Data:
Title (EN) NOVEL SUBSTITUTED NAPHTHOPYRANS
(FR) NOUVEAUX NAPHTOPYRANES SUBSTITUES
Abstract: front page image
(EN)Described are novel reversible photochromic 2H-naphtho[1,2-b]pyran compounds, examples of which are compounds having certain substituents at the number 5 carbon atom of the naphtho portion of the naphthopyran and at the 2-position of the pyran ring. Certain substituents may also be present at the number 6, 7, 8, 9 or 10 carbon atoms of the naphtho portion of the naphthopyran. 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.
(FR)L'invention concerne de nouveaux composés photochromes réversibles du 2H-naphto[1,2-b]pyrane, parmi lesquels des composés portant certains substituants au niveau de l'atome de carbone 5 de la partie naphto du naphtopyrane et de la position 2 du cycle pyrane. Certains substituants peuvent également être présents au niveau des atomes de carbone 6, 7, 8, 9 ou 10 de la partie naphto. L'invention concerne également des matériaux hôtes organiques qui contiennent lesdits composés ou qui en sont revêtus. Elle concerne enfin des articles tels que des verres correcteurs ou d'autres articles transparents qui contiennent les nouveaux composés du naphtopyrane ou leurs combinaisons avec des composés photochromes complémentaires, tels que des composés de type spiro(indoline).
Designated States: AU, CN, JP, KR, MX.
Publication Language: English (EN)
Filing Language: English (EN)