Sealing glass paste for cathode ray tubes
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United States of America Patent
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Feb 6, 2001
Grant Date -
N/A
app pub date -
Jun 29, 1998
filing date -
Jun 30, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sealing glass paste which comprises at least one sealing glass frit powder and an aqueous binder which comprises an aqueous solution, dispersion or emulsion of a polymeric material and a water soluble oxidant which decomposes at a temperature of below 475.degree. C., the polymeric material burning out or decomposing at a temperature of below 475.degree. C., in the presence of the oxidant, to leave less than 2% of residues based on the total weight of the solids content of the binder. The sealing glass pastes may be used in the assembly of cathode ray tubes. The aqueous binder system which is used results in low carbonaceous residue levels after firing and does not contain volatile organic solvents. Furthermore, using this aqueous binder system sealing glass pastes can be prepared with sealing glasses which include PbO therein.
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