Process for producing pigment-coated phosphors
US4219587A · kind A · utility
14Cited by
2References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pigment-coated phosphors which may be used in the production of a cathode-ray tube of a high contrast for a color television receiver can be produced by adding a pigment and an anionic polymer emulsion to an aqueous suspension of a phosphor and then making the system neutral or weakly acidic or adding a cationic polymer emulsion or carrying out both of these steps so that the phosphor and the pigment may be coated with the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.