(Benzofuran) naphthopyrans, the compositions and (co)polymer mat

Details (Benzofuran) naphthopyrans, the compositions and (co)polymer mat (Benzofuran) naphthopyrans, the compositions and (co)polymer mat

1997-12-03

2000-01-25

Dentz, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

252582, 252586, 351163, 525925, 549331, C07D49304

Patent

active

060180595

ABSTRACT:
The present invention has for subjects novel compounds of the [benzofuran]naphthopyran type as well as the compositions and (co)polymer matrices containing them. Said compounds possess interesting photochromic properties.

REFERENCES:
patent: 5527911 (1996-06-01), Guglielmetti et al.
patent: 5631720 (1997-05-01), Guglielmetti et al.
patent: 5645767 (1997-07-01), Van Gemert
patent: 5651923 (1997-07-01), Kumar et al.
patent: 5723072 (1998-03-01), Kumar
Patterson et al, The Ring Index, American Chem. Soc., p. 835, 1960.

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