JPS6487522A - Production of quartz glass - Google Patents

Production of quartz glass

Info

Publication number
JPS6487522A
JPS6487522A JP24668587A JP24668587A JPS6487522A JP S6487522 A JPS6487522 A JP S6487522A JP 24668587 A JP24668587 A JP 24668587A JP 24668587 A JP24668587 A JP 24668587A JP S6487522 A JPS6487522 A JP S6487522A
Authority
JP
Japan
Prior art keywords
soln
particles
spherical fine
silica particles
thereafter
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.)
Granted
Application number
JP24668587A
Other languages
Japanese (ja)
Other versions
JPH0735256B2 (en
Inventor
Takaaki Shimizu
Hideji Tanaka
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.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical 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 Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Priority to JP62246685A priority Critical patent/JPH0735256B2/en
Priority to US07/249,317 priority patent/US4883521A/en
Priority to EP88402420A priority patent/EP0310486B1/en
Priority to DE8888402420T priority patent/DE3869308D1/en
Publication of JPS6487522A publication Critical patent/JPS6487522A/en
Publication of JPH0735256B2 publication Critical patent/JPH0735256B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Glass Melting And Manufacturing (AREA)

Abstract

PURPOSE:To prevent cracking, foaming and opacification which are generated in the processes of drying, sintering and vitrification by concentrating spherical fine silica particles in silica sol liquid and settling them and bringing them to close-packed structure and thereafter allowing them to gel under rise in temp. CONSTITUTION:A soln. contg. spherical fine silica particles is obtained by hydrolyzing alkoxysilane under existence of a basic catalyst. The spherical fine silica particles are obtained by removing the residual catalyst from this soln. and regulating it to <=8pH. Further alcohol and water are removed from the liquid obtained by hydrolyzing alkoxysilane under existence of an acidic catalyst and thereby the concn. of silica is enhanced. The above-mentioned spherical fine silica particles are added to the soln. enhanced in the concn. of silica under icing and this mixture is agitated and the fine particles are redispersed by regulating pH to 2-6 and thereafter fine particles are settled. Then this settled substance is allowed to gel and thereafter vitrified by drying and sintering it.
JP62246685A 1987-09-30 1987-09-30 Quartz glass manufacturing method Expired - Lifetime JPH0735256B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62246685A JPH0735256B2 (en) 1987-09-30 1987-09-30 Quartz glass manufacturing method
US07/249,317 US4883521A (en) 1987-09-30 1988-09-26 Method for the preparation of silica glass
EP88402420A EP0310486B1 (en) 1987-09-30 1988-09-26 A method for the preparation of silica glass
DE8888402420T DE3869308D1 (en) 1987-09-30 1988-09-26 METHOD FOR PRODUCING PEBBLE GLASS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246685A JPH0735256B2 (en) 1987-09-30 1987-09-30 Quartz glass manufacturing method

Publications (2)

Publication Number Publication Date
JPS6487522A true JPS6487522A (en) 1989-03-31
JPH0735256B2 JPH0735256B2 (en) 1995-04-19

Family

ID=17152099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246685A Expired - Lifetime JPH0735256B2 (en) 1987-09-30 1987-09-30 Quartz glass manufacturing method

Country Status (1)

Country Link
JP (1) JPH0735256B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131833A (en) * 1983-12-16 1985-07-13 Seiko Epson Corp Manufacture of quartz glass
JPS61186227A (en) * 1985-02-13 1986-08-19 Seiko Epson Corp Production of quartz glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131833A (en) * 1983-12-16 1985-07-13 Seiko Epson Corp Manufacture of quartz glass
JPS61186227A (en) * 1985-02-13 1986-08-19 Seiko Epson Corp Production of quartz glass

Also Published As

Publication number Publication date
JPH0735256B2 (en) 1995-04-19

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