Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Patent
1996-03-08
1997-10-14
Bonner, Melissa
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
501 12, 501 54, 423335, 423338, 423339, C09K 1159, C03B 3514
Patent
active
056768826
ABSTRACT:
A fluorescent substance of which main component is comprised from 32 mol % to 35 mol % of silicon element and from 68 mol % to 65 mol % of oxygen element, and in which includes from 10 ppm to 1 wt % of silicon carbide and silicon nitride as an activator. And, a manufacturing method of the fluorescent substance by hydrolyzing silicon alkoxide by using alkali or acid catalyzer under the presence of carbon, and by heat treating the obtained precursor at the temperature of 500.degree. C. to 900.degree. C.
REFERENCES:
patent: Re32107 (1986-04-01), January
patent: 3999835 (1976-12-01), Newns et al.
patent: 5229336 (1993-07-01), Akiyama et al.
Sano Masahito
Yamada Nobusuke
Bonner Melissa
Research Development Company of Japan
Toso Company, Ltd.
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