JPS5678434A - Production of optical glass - Google Patents

Production of optical glass

Info

Publication number
JPS5678434A
JPS5678434A JP15440679A JP15440679A JPS5678434A JP S5678434 A JPS5678434 A JP S5678434A JP 15440679 A JP15440679 A JP 15440679A JP 15440679 A JP15440679 A JP 15440679A JP S5678434 A JPS5678434 A JP S5678434A
Authority
JP
Japan
Prior art keywords
methanol
optical glass
silica gel
metal alkoxide
light irradiation
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
JP15440679A
Other languages
Japanese (ja)
Inventor
Makoto Sato
Kenzo Susa
Iwao Matsuyama
Yasuo Suganuma
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15440679A priority Critical patent/JPS5678434A/en
Publication of JPS5678434A publication Critical patent/JPS5678434A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/12—Other methods of shaping glass by liquid-phase reaction processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Glass Compositions (AREA)
  • Colloid Chemistry (AREA)

Abstract

PURPOSE:A porous gel resulting from hydrolysis of a metal alkoxide is heat treated in a chlorine-containing atmosphere under light irradiation and sintered to produce an optical glass of low hydoxyl content. CONSTITUTION:A metal alkoxide such as Si(OCH3)4 is mixed with methanol, distilled off water under stirring, and gelation is effected in a thermmostat kept to 20 deg.C. Then, remaining water and methanol is evaporated at 70 deg.C to form a silica gel. The silica gel is placed in a glass making device and treated with chlorine gas at 800 deg.C under irradiation of light from, e.g., a mercury lamp. In comparison with the treatment without light irradiation, the time for dehydroxylation is shortened by about half.
JP15440679A 1979-11-30 1979-11-30 Production of optical glass Pending JPS5678434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15440679A JPS5678434A (en) 1979-11-30 1979-11-30 Production of optical glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15440679A JPS5678434A (en) 1979-11-30 1979-11-30 Production of optical glass

Publications (1)

Publication Number Publication Date
JPS5678434A true JPS5678434A (en) 1981-06-27

Family

ID=15583446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15440679A Pending JPS5678434A (en) 1979-11-30 1979-11-30 Production of optical glass

Country Status (1)

Country Link
JP (1) JPS5678434A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884741A (en) * 1981-11-13 1983-05-20 Sharp Corp Structure of nozzle of injection molding machine
US4704299A (en) * 1985-11-06 1987-11-03 Battelle Memorial Institute Process for low temperature curing of sol-gel thin films

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134721A (en) * 1978-04-11 1979-10-19 Nippon Telegraph & Telephone Manufacture of anhydrous glass parent material for optical fiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134721A (en) * 1978-04-11 1979-10-19 Nippon Telegraph & Telephone Manufacture of anhydrous glass parent material for optical fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884741A (en) * 1981-11-13 1983-05-20 Sharp Corp Structure of nozzle of injection molding machine
US4704299A (en) * 1985-11-06 1987-11-03 Battelle Memorial Institute Process for low temperature curing of sol-gel thin films

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