Sealing glass paste for cathode ray tubes
US6183871A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/263
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.