Photochromic compound and articles containing the same

Details Photochromic compound and articles containing the same Photochromic compound and articles containing the same

1987-05-14

1988-12-20

Thexton, Matthew A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

252586, 544 71, 350409, 350354, G02B 523, C07D26500

Patent

active

047922249

ABSTRACT:
Described are photochromic spiro (oxazolidine) substituted benzoxazine photochromic compounds and their use in plastic hosts to impart a photochromic response thereto. More particularly, there are described spiro (oxazolidine) pyrido benzoxazine and spiro (oxazolidine) naphthoxazine compounds and their use in substrates such as polymerizates of allyl digylcol carbonate.

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patent: 4215010 (1980-07-01), Hovey et al.
patent: 4287337 (1981-09-01), Guglielmetti et al.
patent: 4342668 (1982-08-01), Hovey et al.
patent: 4634767 (1987-01-01), Hoelscher et al.
Arnold & Paal, "Spektroskopische Strukturuntersuchungen An Heterozyklischen Spiroverbindungen", Tetrahedron vol. 27, pp. 1699-1713, 1971 (w/translation).
Organic Synthesis, vol. I., 2nd Ed., H. Gilman et al., John Wiley & Sons, pp. 411-413 (1941).
Journal of Organic Chemistry, vol. 28, pp. 2759-2752 (Oct. 1963).
Thesis; "Synthesis and Physico-Chemical Studies of New Oxygenated and Sulfurated Azaheterocyclic Spirochromenes with 5 or 6 Saturated Groups", by Michel Maguet, University of Bretagne Occidentale, submitted Jun. 27, 1980, Table of Contents, pp. 27-37, 65-68, 75-76, 79, 165-179 and 191-199. (w/translation).

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