JPS5632347A - Glass for tungsten halogen electric bulb - Google Patents

Glass for tungsten halogen electric bulb

Info

Publication number
JPS5632347A
JPS5632347A JP10861779A JP10861779A JPS5632347A JP S5632347 A JPS5632347 A JP S5632347A JP 10861779 A JP10861779 A JP 10861779A JP 10861779 A JP10861779 A JP 10861779A JP S5632347 A JPS5632347 A JP S5632347A
Authority
JP
Japan
Prior art keywords
electric bulb
tungsten halogen
glass
halogen electric
specified
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
JP10861779A
Other languages
Japanese (ja)
Inventor
Yoshio Suzuki
Yoshinori Kokubu
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 JP10861779A priority Critical patent/JPS5632347A/en
Publication of JPS5632347A publication Critical patent/JPS5632347A/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
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass

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 provide glass suitable for use as a material for a tungsten halogen electric bulb for a car head lamp, consisting essentially of SiO2, Al 2O3, CaO, SrO and MgO in a specified ratio, and having a specified thermal expansion coefficient and a specified strain point.
CONSTITUTION: This glass for a tungsten halogen electric bulb has a composition consisting of, by wt., 56W65% SiO2, 14W18% Al2O3, 6W10.5% CaO, 5W16% SrO, 1W5% MgO, 0W5% BaO, 0W1% P2O5, 0W1% CeO2, 0W1% TiO2 and 0W1% As2O3+Sb2O3, and it has ≥700°C strain point and about 41W48×10-7°C-1 thermal expansion coefficient at 0W300°C.
COPYRIGHT: (C)1981,JPO&Japio
JP10861779A 1979-08-28 1979-08-28 Glass for tungsten halogen electric bulb Pending JPS5632347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10861779A JPS5632347A (en) 1979-08-28 1979-08-28 Glass for tungsten halogen electric bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10861779A JPS5632347A (en) 1979-08-28 1979-08-28 Glass for tungsten halogen electric bulb

Publications (1)

Publication Number Publication Date
JPS5632347A true JPS5632347A (en) 1981-04-01

Family

ID=14489329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10861779A Pending JPS5632347A (en) 1979-08-28 1979-08-28 Glass for tungsten halogen electric bulb

Country Status (1)

Country Link
JP (1) JPS5632347A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017521A (en) * 1986-09-26 1991-05-21 Pilkington Plc Borosilicate glass compositions incorporating cerium oxide
US5244847A (en) * 1991-04-26 1993-09-14 Asahi Glass Company Ltd. Alkali free glass
US7390761B2 (en) * 2002-02-01 2008-06-24 Schott Ag Alkaline-earth aluminosilicate glass and use thereof
JP2012121738A (en) * 2010-12-06 2012-06-28 Nippon Electric Glass Co Ltd Non-alkali glass

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5017521A (en) * 1986-09-26 1991-05-21 Pilkington Plc Borosilicate glass compositions incorporating cerium oxide
US5244847A (en) * 1991-04-26 1993-09-14 Asahi Glass Company Ltd. Alkali free glass
US7390761B2 (en) * 2002-02-01 2008-06-24 Schott Ag Alkaline-earth aluminosilicate glass and use thereof
JP2012121738A (en) * 2010-12-06 2012-06-28 Nippon Electric Glass Co Ltd Non-alkali glass

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