Compositions – Organic luminescent material containing compositions – With inorganic luminescent material
Patent
1977-06-30
1980-06-17
Edmundson, F. C.
Compositions
Organic luminescent material containing compositions
With inorganic luminescent material
25230116, 25230135, 25230136, C09K 1102, C09K 1110
Patent
active
042083001
ABSTRACT:
The present invention has for its object to eliminate the expense of the installation and maintenance of a continuous lighting system for roadways, staircases, doorways and the like by using the light remanence obtained from a photo-luminescent material covering the obstacles or structures to be lighted. The invention provides a material having permanent physical, mechanical and chemical properties which cannot be changed by rubbing or wear; in the textile field, the material may constitute the fabric fibres or a standard fabric can be coated with the material. The material products are photo-luminsecent in their mass and are of the type comprising a synthetic binding agent having a spectral response from the U.V. to close to the I.R., crystalline fillers or charges with a high coefficient of light transmission over the same spectral field and one or more phosphorescent substances, at least one substance absorbing energy from low wavelengths of light and re-emitting this energy at the level of the absorption spectrum of one of the phosphorescent substances, and at least one fluorescent substance selected so as to give a remanent color which can be different from that of the phosphorescent substance.
REFERENCES:
patent: 868779 (1907-10-01), Hammer
patent: 1096644 (1914-05-01), Saubermann
patent: 3518205 (1970-06-01), Vukasovich
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