JPS5617939A - Manufacture of porous glass - Google Patents

Manufacture of porous glass

Info

Publication number
JPS5617939A
JPS5617939A JP9465379A JP9465379A JPS5617939A JP S5617939 A JPS5617939 A JP S5617939A JP 9465379 A JP9465379 A JP 9465379A JP 9465379 A JP9465379 A JP 9465379A JP S5617939 A JPS5617939 A JP S5617939A
Authority
JP
Japan
Prior art keywords
glass
phase
soln
elute
soft
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
JP9465379A
Other languages
Japanese (ja)
Inventor
Shiro Kurosaki
Minoru Watanabe
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP9465379A priority Critical patent/JPS5617939A/en
Publication of JPS5617939A publication Critical patent/JPS5617939A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To manufacture porous glass having a uniform micropore distribution by dipping phase separated glass having soft phase easy to elute and hard phase free from elution in a hot aqueous soln. contg. a specified component to elute the soft phase. CONSTITUTION:A glass block having a uniform composition such as Na2O-K2O- B2O-3- SiO2 is prepared and phase separated into the above-mentioned soft and hard phases by heat treatment. Phase separated glass 13 is placed on holder 12 of container 11 made of quartz glass or the like. Eluting soln. 14 contg. one of C6 monosaccharides such as sorbitol, dextrose, invert sugar, fructose and mannitol or a complex of boric acid with an alpha-diol type polyol such as glycerol is poured into container 11 inlet 14'. To soln. 14 may be added an alkali such as NH4OH or Na2CO3. The soln. 14 is then heated to about 95 deg.C with heater 18 to elute the soft phase. Thus, porous glass is obtd.
JP9465379A 1979-07-24 1979-07-24 Manufacture of porous glass Pending JPS5617939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9465379A JPS5617939A (en) 1979-07-24 1979-07-24 Manufacture of porous glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9465379A JPS5617939A (en) 1979-07-24 1979-07-24 Manufacture of porous glass

Publications (1)

Publication Number Publication Date
JPS5617939A true JPS5617939A (en) 1981-02-20

Family

ID=14116207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9465379A Pending JPS5617939A (en) 1979-07-24 1979-07-24 Manufacture of porous glass

Country Status (1)

Country Link
JP (1) JPS5617939A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898777A (en) * 1989-01-24 1990-02-06 Infrared Fiber Systems High-strength fluoride glass fibers and process of making
CN103118999A (en) * 2010-09-30 2013-05-22 佳能株式会社 Method for producing porous glass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898777A (en) * 1989-01-24 1990-02-06 Infrared Fiber Systems High-strength fluoride glass fibers and process of making
CN103118999A (en) * 2010-09-30 2013-05-22 佳能株式会社 Method for producing porous glass

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