Compositions – Light transmission modifying compositions – Displaying color change
Patent
1991-09-04
1995-05-09
Tucker, Philip
Compositions
Light transmission modifying compositions
Displaying color change
252589, G02B 523
Patent
active
054137403
ABSTRACT:
A photochromic plastic has been discovered which is useful in the manufacture of protective eyeglasses. The photochromic plastic comprises a host polymer material and a dopant. The plastic exhibits photochromic properties due to excited state absorption which occurs when the material is exposed to UV light. The eyeglasses function as protection against radiation from the sun as well as from industrial and other sources. The dynamic range and response time of this novel photochromic plastic may be tailored in accordance with the particular use or application desired.
REFERENCES:
patent: 3635544 (1972-01-01), Stamm et al.
patent: 3716489 (1973-02-01), DeLapp
patent: 3725292 (1973-04-01), Gerhardt
patent: 5017698 (1991-05-01), Machida et al.
Alger, Mark S. M., Polymer Science Dictionary, p. 339, Elsevier (1989).
Bell, S. et al., Trans Faraday Soc., "Absorption Spectra of Silyl Compounds in the Vacuum Ultra-Violet," 62:3005-3010 (1966).
Brown, John F. et al., J. Am. Chem. Soc., "Inteamolecular Interactions between Nonbonded Chromophores. The Spectra of Some Phenylsilanes and Siloxanes," 86:1406-1409 (1964).
Burgoyne, Edward E., et al., "2-Methyl Trifluoroacetate," J. Am. Chem. Soc., 72:3276-3277 (1950).
C. Eaborn, "Organosilicon Compounds. Part VI. The Kinetics of the Acid-catalysed Cleavage of p-Methoxyphenyltrimethylsilane," J. Chem. Soc., Part VI:3148-3153 (1953).
C. Eaborn, Organosilicon Compounds, 466-473 (Butterworths Scientific Publications, London 1960).
Nagy, J., et al., "Investigations on the Bond Structure of Alkylphenoxy-Silanes Using Ultraviolet Spectrophotometric Methods," J. Organometal. Chem., 9:57-65 (1967).
Yitzhak Apeloig, "Theoretical Aspects of Organosilicon Compounds" 57-69 in The Chemistry of Organic Silicon Compounds, (Ed. Patai, S., et al. John Wiley & Sons 1989).
Brian G. Ramsey, "Electronic Transitions in Organometalloids," 123-134, in Organometallic Chemistry, (Ed. Maitilis, P. M., et al. Academic Press (1969).
William R. McBride, "Optical Materials for Transmission Filters in the Middle Ultraviolet," J. Opt. Soc. Am., 53:519 (TD14) (1963).
Williams R. McBride, "Composite Narrow-band Filters for the Near and Middle Ultraviolet," J. Opt. Soc. Am., 53:1352 (FC11) (1963).
Smith, A. Lee, et al., "Spectroscopic Techniques for Indentification of Organosilicon Compounds", Analytical Chem. 31(7):1174-1179 (1959).
D. R. Anderson, "Infrared, Raman and Ultraviolet Spectroscopy," 247-341 in Analysis of Silicones,(Ed., A. Lee Smith, John Wiley & Sons 1974) vol. 41.
Alfred Stock, Hybrides of Boron and Silicon, 20-41 (Cornell University Press 1933).
Yorkgitis, E. M., et al., "Siloxane-Modified Epoxy Resins," 79-82, 108-109 in Epoxy Resins and Composites, (Ed. K. Dusek Springer-Verlag 1986).
Analysis of Silicones, 328-330, 340, 341, (Ed. A. Lee Smith, Second Edition 1981) (John Wiley & Sons).
William R. Dawson et al. "An Eye Protective Panel for Flash-Blindness Protection Using Triplet State Photochromism" vol. 8, No. 5, Applied Optics, May 1969.
Trustee of Boston University
Tucker Philip
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