Spirooxazine photochromic compounds

Details Spirooxazine photochromic compounds Spirooxazine photochromic compounds

1989-05-26

1991-05-21

Raymond, Richard L.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D49820

Patent

active

050176986

ABSTRACT:
Disclosed herein is a photochromic compound comprising a spirooxazine compound represented by the following general formula (I): ##STR1## wherein R.sup.1 means an alkyl, allyl or alkoxyalkyl group, or a substituted or unsubstituted aralkyl or aryloxyalkyl group, R.sup.2 and R.sup.3 individually denote a substituted or unsubstituted alkyl group, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 stand individually for a hydrogen or halogen atom, or an alkyl, alkoxy, hydroxy, alkoxyalkyl, or substituted or unsubstituted amino group. A photochromic composition comprising the photochromic compound and a phenol derivative, fluorine-containing alcohol or hindered amine type light stabilizer is also disclosed.

REFERENCES:
patent: 4634767 (1987-01-01), Hoelscher et al.
patent: 4637698 (1987-01-01), Kwak et al.
patent: 4719296 (1988-01-01), Irie et al.
Publication No. WO 87/00524 (Optische Werke G. Rodenstock), 1-1987.

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