JPS56109836A - Glass composition for bulb - Google Patents

Glass composition for bulb

Info

Publication number
JPS56109836A
JPS56109836A JP1237280A JP1237280A JPS56109836A JP S56109836 A JPS56109836 A JP S56109836A JP 1237280 A JP1237280 A JP 1237280A JP 1237280 A JP1237280 A JP 1237280A JP S56109836 A JPS56109836 A JP S56109836A
Authority
JP
Japan
Prior art keywords
bulb
pbo
composition
glass composition
glass
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
JP1237280A
Other languages
Japanese (ja)
Inventor
Akira Hayamizu
Osamu Sakamoto
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP1237280A priority Critical patent/JPS56109836A/en
Publication of JPS56109836A publication Critical patent/JPS56109836A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

PURPOSE: To obtain a glass composition suitable for a bulb such as a circular fluorescent lamp by blending a specified amount of SiO2, Al2O3, Na2O+K2O, PbO, CaO+MgO, SrO, etc. and reducing the content of PbO.
CONSTITUTION: This glass composition consists of, by wt., 55W70% SiO2, 0.5W 4% Al2O3, 13W19% Na2O+K2O, 3W19% PbO, 0W3% CaO+MgO, 0W2.5% BaO, 3W10% SrO, 0W3% B2O3, 0W2% Li2O, 0W0.5% Sb2O3 and 0W0.5% As2O3. The content of PbO in this composition is specified to the 3W19% range where the composition holds characteristics as a bulb without lowering the workability. Using the composition glass for a bulb with superior bendability, softening point, thermal expansion coefft., weather resistance, etc. is obtd.
COPYRIGHT: (C)1981,JPO&Japio
JP1237280A 1980-02-06 1980-02-06 Glass composition for bulb Pending JPS56109836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1237280A JPS56109836A (en) 1980-02-06 1980-02-06 Glass composition for bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1237280A JPS56109836A (en) 1980-02-06 1980-02-06 Glass composition for bulb

Publications (1)

Publication Number Publication Date
JPS56109836A true JPS56109836A (en) 1981-08-31

Family

ID=11803428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1237280A Pending JPS56109836A (en) 1980-02-06 1980-02-06 Glass composition for bulb

Country Status (1)

Country Link
JP (1) JPS56109836A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657392A1 (en) * 1993-12-08 1995-06-14 Koninklijke Philips Electronics N.V. Glass for a cone of a display tube, display tube envelope comprising a cone of such a glass and method of manufacturing a cone from such a glass
US6528444B1 (en) * 1998-02-10 2003-03-04 Matsushita Electric Industrial Co., Ltd. Glass composition, stem and bulb for lamps
WO2006073703A1 (en) * 2004-12-30 2006-07-13 Owens Corning Intellectual Capital, Llc. Low boron glass composition for loose-fill and acoustical fiberglass insulation
CN101935163A (en) * 2010-08-03 2011-01-05 长兴康宁玻璃有限公司 Glass tube of novel high-efficiency energy-saving lamp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657392A1 (en) * 1993-12-08 1995-06-14 Koninklijke Philips Electronics N.V. Glass for a cone of a display tube, display tube envelope comprising a cone of such a glass and method of manufacturing a cone from such a glass
BE1007861A3 (en) * 1993-12-08 1995-11-07 Koninkl Philips Electronics Nv GLASS FOR THE CONE OF A TUBE, TUBE envelope with a CONE FROM SUCH GLASS AND METHOD FOR THE MANUFACTURE OF A CONE FROM SUCH GLASS.
US6528444B1 (en) * 1998-02-10 2003-03-04 Matsushita Electric Industrial Co., Ltd. Glass composition, stem and bulb for lamps
WO2006073703A1 (en) * 2004-12-30 2006-07-13 Owens Corning Intellectual Capital, Llc. Low boron glass composition for loose-fill and acoustical fiberglass insulation
US7648929B2 (en) 2004-12-30 2010-01-19 Owens Corning Intellectual Capital, Llc Low boron glass composition for loose-fill fiberglass insulation
CN101935163A (en) * 2010-08-03 2011-01-05 长兴康宁玻璃有限公司 Glass tube of novel high-efficiency energy-saving lamp

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