Photochromic compound and articles containing the same

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

1989-06-12

1990-06-05

Thexton, Matthew A.

Compositions

Light transmission modifying compositions

Displaying color change

544 70, 544 71, 350354, G02B 523

Patent

active

049312197

ABSTRACT:
Described are spiro (benzidoline) pyrido benzoxazine and spiro (benzindoline) naphthoxazine photochromic compounds and their use in plastic hosts to impact a photochromic response thereto.

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patent: 4342668 (1982-08-01), Hovey et al.
patent: 4637698 (1987-01-01), Kwak et al.
patent: 4719296 (1988-01-01), Irie
Kholmanskii, "Kinetics of Photochromic Transformations", Khim. Vys. Enorg. 9(5), 4734, 1975.
Galbershtan, "Synthesis and Spectral . . . ", Khim Geterotsikl. Soedin, 1976, No. 6, 815-816.
Chu, "Photochromism of Spiroindolinonaph Thoxazine I", Can. J. Chem, 61, 1983, pp. 300-305.
Techniques of Chemistry, vol. III, Photochromism Glenn H. Brown, Editor, 1971, pp. 48-55, 98-105.
Platonova, "Study of the Photochromic", Zh. Fiz. Khim 54(3), 799, 1980.
Kholmanskii, "Mechanism of Intramolecular", Dokl. Akad. Nauk. SSSR, 239(4), 908-11, [Phys. Chem.], 1978.

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