Title:
PIGMENT-ATTACHED FLUOPHOR
Document Type and Number:
Japanese Patent JP2964852
Kind Code:
B2
Abstract:
PURPOSE: To provide the fluophor excellent in quality, useful for the fluorescent surface of color picture tubes, containing, as active ingredient, a water-soluble hemicellulose.
CONSTITUTION: The fluophor containing, as active ingredient, a water-soluble hemicellulose, e.g. derived from soybean. This fluophor can be obtained, for example, by the following processes: 5 pts.wt. of a water-soluble soybean hemicellulose is dissolved in 95 pts.wt. of water followed by adding 100 pts.wt.of an europium-activated yttrium oxysulfide fluophor to the resultant aqueous solution to effect its dispersion; the resultant fluophor dispersion is mixed with a dispersion of pigment prepared by dispersing 1 pt.wt. of cadmium thioselenate in a solution made by dissolving 5 pts.wt. of gelatin in 95 pts.wt. of warm water to immobilize the particles of a pigment-attached fluophor which are then dried.
Inventors:
TAKAHASHI TARO
MAEDA JUICHI
FURUTA HITOSHI
TOBE JUNKO
HATSUTORI MITSUO
MAEDA JUICHI
FURUTA HITOSHI
TOBE JUNKO
HATSUTORI MITSUO
Application Number:
JP23945293A
Publication Date:
October 18, 1999
Filing Date:
September 27, 1993
Export Citation:
Assignee:
FUJI SEIYU KK
International Classes:
C09K11/02; C09K11/08; H01J29/20; (IPC1-7): C09K11/02; C09K11/08
Domestic Patent References:
| JP553407A | ||||
| JP5581447A | ||||
| JP5378986A |