GB1441900A - Methods of coating discharge lamp envelopes - Google Patents

Methods of coating discharge lamp envelopes

Info

Publication number
GB1441900A
GB1441900A GB2284875A GB2284875A GB1441900A GB 1441900 A GB1441900 A GB 1441900A GB 2284875 A GB2284875 A GB 2284875A GB 2284875 A GB2284875 A GB 2284875A GB 1441900 A GB1441900 A GB 1441900A
Authority
GB
United Kingdom
Prior art keywords
spectrum
composition
particles
alumina
modifying
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.)
Expired
Application number
GB2284875A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1441900A publication Critical patent/GB1441900A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/46—Devices characterised by the binder or other non-luminescent constituent of the luminescent material, e.g. for obtaining desired pouring or drying properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Paper (AREA)
  • Paints Or Removers (AREA)

Abstract

1441900 Uses of luminescence WESTING- HOUSE ELECTRIC CORP 23 May 1975 [12 June 1974] 22848/75 Heading C4S [Also in Division B2] Discharge lamp envelopes are provided with a spectrum-modifying (e.g. U.V.-fluorescent) coating by preparing a composition comprising spectrum-modifying particles, alumina particles in a weight ratio to the spectrum-modifying particles of 0.01 to 0.04: 1, and an aqueous solution of polyethylene oxide having a viscosity of 20 to 200 centipoises, coating the envelope with the composition, and lehring at 400‹ to 550‹ C. The spectrum-modifying particles may be a halophosphate phosphor, one silicate, calcium tungstate phosphor, or a mixed cadmium sulphide/cadmium selenide phosphor. The alumina is preferably a fumed alumina of about 300 Šngstr÷m units particle size, or may be precipitated alumina of 600 Šngstr÷m units particles. It is preferably dispersed in water before addition to the composition preferably together with a flexibilizer (e.g. glycerol or triethanol amine). Wetting agents and antifoaming agents may also be present in the composition. The polyethylene oxide concentration is about 0À8 to 1À0% wt./volume. Lehring may be performed in air, or if necessary, in an inert atmosphere such as nitrogen.
GB2284875A 1974-06-12 1975-05-23 Methods of coating discharge lamp envelopes Expired GB1441900A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47880774A 1974-06-12 1974-06-12

Publications (1)

Publication Number Publication Date
GB1441900A true GB1441900A (en) 1976-07-07

Family

ID=23901431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2284875A Expired GB1441900A (en) 1974-06-12 1975-05-23 Methods of coating discharge lamp envelopes

Country Status (7)

Country Link
JP (1) JPS518782A (en)
CA (1) CA1045908A (en)
DE (1) DE2526281A1 (en)
GB (1) GB1441900A (en)
MY (1) MY7700180A (en)
NL (1) NL7506340A (en)
PL (1) PL96170B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308186A (en) 1980-07-07 1981-12-29 North American Philips Corporation Reflector coating composition for fluorescent lamps
US4308297A (en) 1979-03-12 1981-12-29 Mitsubishi Denki Kabushiki Kaisha Method of manufacturing fluorescent lamps

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5858277A (en) * 1992-12-23 1999-01-12 Osram Sylvania Inc. Aqueous phosphor coating suspension for lamps
DE4305520C1 (en) * 1993-02-17 1994-06-01 Prolux Maschinenbau Gmbh Aq. suspension for coating inside of complex lamp discharge vessel - contains water-soluble adduct of polyethylene oxide and ammonium polyacrylate as binder, giving good thixotropic flow, drying and dispersion
DE4309408A1 (en) * 1993-03-19 1994-09-22 Prolux Maschinenbau Gmbh Suspension for the internal coating of glass vessels, especially lamp discharge vessels of complicated geometric shape, and method for the interior coating of the glass vessels
US8622053B2 (en) 2009-03-16 2014-01-07 Planika Sp. Z O.O. Burner and method of its operation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308297A (en) 1979-03-12 1981-12-29 Mitsubishi Denki Kabushiki Kaisha Method of manufacturing fluorescent lamps
US4362123A (en) 1979-03-12 1982-12-07 Mitsubishi Denki Kabushiki Kaisha Apparatus for manufacturing fluorescent lamps
US4308186A (en) 1980-07-07 1981-12-29 North American Philips Corporation Reflector coating composition for fluorescent lamps

Also Published As

Publication number Publication date
MY7700180A (en) 1977-12-31
PL96170B1 (en) 1977-12-31
NL7506340A (en) 1975-12-16
JPS518782A (en) 1976-01-23
DE2526281A1 (en) 1976-01-02
JPS53871B2 (en) 1978-01-12
CA1045908A (en) 1979-01-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee