JPS6487522A - Production of quartz glass - Google Patents
Production of quartz glassInfo
- 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
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.
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)
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 |
-
1987
- 1987-09-30 JP JP62246685A patent/JPH0735256B2/en not_active Expired - Lifetime
Patent Citations (2)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment |
Free format text: PAYMENT UNTIL: 20080419 Year of fee payment: 13 |