Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1997-01-03
1999-12-14
Eisenchenk, Chris
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
427 64, 427 66, 427 67, 427214, 427215, 427217, 427221, 427226, 4273722, B32B 516, B05D 722, B05D 506
Patent
active
060014776
ABSTRACT:
A method for providing an adherent, continuous, conformal, non-particulate coating of a compound of a metal or metalloid on the surface of individual phosphor particles. The method involves wetting each of the individual particles with a polymer solution including a polymer in a solvent base, the polymer being capable of chelating ions of the metal or metalloid. The particles then are dried to produce a continuous coating of the polymer on each of the individual particles. The polymer-coated phosphor particles are suspended in a solution containing ions of the metal or metalloid and having a pH of at least 9 to produce chelation of the metal or metalloid ions by the polymer coating, to produce the adherent, continuous, conformal, non-particulate, metal- or metalloid-compound coating on the particle surfaces. Also described are a method for improving lumen maintenance of a lamp, a coated phosphor powder, and a phosphor-coating composition for coating an inner surface of a lamp envelope.
REFERENCES:
patent: 4265950 (1981-05-01), Graff
patent: 4340512 (1982-07-01), Schreurs
patent: 4710674 (1987-12-01), Sigai
patent: 5113118 (1992-05-01), Sigai et al.
patent: 5196229 (1993-03-01), Chau
patent: 5382452 (1995-01-01), Bruno et al.
patent: 5417886 (1995-05-01), Tateiwa et al.
patent: 5433888 (1995-07-01), Okada et al.
patent: 5695685 (1997-12-01), Chau et al.
Chau Chung Nin
Salvi Paul W.
Silloway Tracy V.
Clark Robert F.
Eisenchenk Chris
Osram Sylvania Inc.
Zeman Mary K
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