Compositions – Light transmission modifying compositions – Displaying color change
Patent
1982-03-22
1984-04-03
Kyle, Deborah L.
Compositions
Light transmission modifying compositions
Displaying color change
350354, G02B 523
Patent
active
044406720
ABSTRACT:
The organic photochromic composition of this invention comprises spiro [indoline-2,3'-[3H]-naphth [2,1-b] [1,4] oxazine] (SO) dye and an unconventional ultraviolet stabilizer. The ultraviolet stabilizer improves the light fatigue resistance of the SO dye and will not hinder the photocolorability of the photochromic composition.
REFERENCES:
patent: 3212898 (1965-10-01), Cerreta
patent: 3666352 (1972-05-01), Wagner et al.
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4342668 (1982-08-01), Hovey et al.
Flood, J., et al., "Quenching of Singlet Molecular Oxygen by Polyolefin Additives in Carbon Disulfide Solution," (1973).
Carlsson, D. J., et al., "Singlet Oxygen Quenching in the Liquid Phase by Metal (II) Chelates," Journal of the American Chemical Society, 12/13/72.
Carlsson, D. J., et al., "The Possible Importance of Singlet Oxygen Quenching Reactions in the Photostabilization of Polyolefins," Polymer Letters Edition, vol. II, pp. 61-65 (1973).
Furue, H., et al., "Deactivation of Single Oxygen by Polyolefin Stabilizers," Single Oxygen, pp. 316-319 (1978).
Scott, Gerald, "Mechanisms of Photodegration and Stabilization of Polyolefins," pp. 340-366.
American Optical Corporation
Kyle Deborah L.
LandOfFree
Photochromic composition resistant to fatigue does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photochromic composition resistant to fatigue, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photochromic composition resistant to fatigue will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-666446