Low temperature process for coating lamp envelopes

Details Low temperature process for coating lamp envelopes Low temperature process for coating lamp envelopes

C - Chemistry, Metallurgy

09

K

117/21

C09K 11/02 (2006.01) H01J 61/46 (2006.01)

Patent

CA 1045908

ABSTRACT OF THE DISCLOSURE A phosphor coating process which provides for lower temperature lehring (less than about 550°C) using a polyethylene oxide binder in combination with a relatively large amount (greater than about 1% of the phosphor weight) of finely-divided alumina as an adhesion promoter, The method provides about 30% savings of fuel for the lehring. The method can also be used to provide other coatings (such as pigments) and can be used to apply particles of which would be subject to oxidation and air at lehring tempera- tures, as the polyethylene oxide can be lehred away in a non-oxidized atmosphere.

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