[go: up one dir, main page]

JPS5489984A - Fluorescent substance treating method - Google Patents

Fluorescent substance treating method

Info

Publication number
JPS5489984A
JPS5489984A JP15650577A JP15650577A JPS5489984A JP S5489984 A JPS5489984 A JP S5489984A JP 15650577 A JP15650577 A JP 15650577A JP 15650577 A JP15650577 A JP 15650577A JP S5489984 A JPS5489984 A JP S5489984A
Authority
JP
Japan
Prior art keywords
fluorescent substance
water
substance
alcohol
required diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15650577A
Other languages
Japanese (ja)
Inventor
Norio Shinoda
Osamu Yasutome
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15650577A priority Critical patent/JPS5489984A/en
Publication of JPS5489984A publication Critical patent/JPS5489984A/en
Pending legal-status Critical Current

Links

Landscapes

  • Luminescent Compositions (AREA)

Abstract

PURPOSE: To easily obtain a desired fluorescent substance without forming secondary particles by fractionating a fluorescent substance of a required diameter by water elutriation and evaporating the water in the presence of alcohol to dry the substance.
CONSTITUTION: A fluorescent substance of various diameters calcined and pulverized, e.g. self-activated zinc oxide is charged into an aq. soln. of a dispersant such as sodium hexametaphosphate, optionally stirred well, and subjected to water elutriation to fractionate some substance of a required diameter. After adding alcohol such as ethanol, the substance is heated to 100W130°C to evaporate the water and alcohol, thus obtaining the desired very dry fluorescent substance of the required diameter contg. no water and forming no secondary particles.
COPYRIGHT: (C)1979,JPO&Japio
JP15650577A 1977-12-27 1977-12-27 Fluorescent substance treating method Pending JPS5489984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15650577A JPS5489984A (en) 1977-12-27 1977-12-27 Fluorescent substance treating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15650577A JPS5489984A (en) 1977-12-27 1977-12-27 Fluorescent substance treating method

Publications (1)

Publication Number Publication Date
JPS5489984A true JPS5489984A (en) 1979-07-17

Family

ID=15629220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15650577A Pending JPS5489984A (en) 1977-12-27 1977-12-27 Fluorescent substance treating method

Country Status (1)

Country Link
JP (1) JPS5489984A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002249769A (en) * 1996-09-20 2002-09-06 Siemens Ag Wavelength conversion casting material, method for producing the same, and light emitting device
CN105154061A (en) * 2015-10-01 2015-12-16 上海洞舟实业有限公司 Transparent damp-proof film wrapping method for electroluminescence powder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002249769A (en) * 1996-09-20 2002-09-06 Siemens Ag Wavelength conversion casting material, method for producing the same, and light emitting device
JP2008103756A (en) * 1996-09-20 2008-05-01 Siemens Ag Casting material, manufacturing method thereof, and light emitting device
JP2009071336A (en) * 1996-09-20 2009-04-02 Siemens Ag LED chip
JP2012238909A (en) * 1996-09-20 2012-12-06 Osram Ag Casting material, method of manufacturing the same, and light emitting element
CN105154061A (en) * 2015-10-01 2015-12-16 上海洞舟实业有限公司 Transparent damp-proof film wrapping method for electroluminescence powder

Similar Documents

Publication Publication Date Title
ES526783A0 (en) PROCEDURE FOR OBTAINING A POLYMERIC POWDER FOR ENTERIC COATING OF PHARMACEUTICAL DOSAGE FORMS
JPS5489984A (en) Fluorescent substance treating method
JPS5224200A (en) Method for production of spherical ferrite powder
JPS5234986A (en) Preparation of water-soluble monascus pigment
JPS5248284A (en) Method of treatment of clinker ash from solid fuel furnace
JPS54123250A (en) Calucium-based water treating agent
JPS5320659A (en) Method of treating waste water containing heavy metal
JPS534463A (en) Color receiving tube
JPS5734014A (en) Production of cordierite composition powder
JPS52118661A (en) Preparation of heat pipe
JPS51120723A (en) Objective lens for deplicating
JPS5656283A (en) Treatment of sludge or sewage
JPS57133191A (en) Fuel for gas cutting
JPS5557510A (en) Preparation of improved oil foundation
JPS5272099A (en) Tentative treatment method for radioactive solid waste
JPS51117473A (en) Crush-dehydoration equipment for waste including solid objects
JPS51125960A (en) Treating method of exhaust gas collection water
JPS568658A (en) Preparation of gelatinized rice (alpha-rice) enriched with calcium
JPS5234985A (en) Preparation of water-soluble monascus pigment
JPS51138736A (en) Preparation of an aqueous dispersion of polyolefin composition
JPS5582183A (en) Fluorescent material with pigment
JPS534705A (en) Wet process treatment of blast furnace secondary ash
JPS5241456A (en) Method for treating waste water containing polyvinyl alcohol
JPS5436075A (en) Method of treating waste water by way of combustion
JPS5759807A (en) Carcinostatic agent