GB548896A - Improvements in or relating to glass compositions - Google Patents
Improvements in or relating to glass compositionsInfo
- Publication number
- GB548896A GB548896A GB828941A GB828941A GB548896A GB 548896 A GB548896 A GB 548896A GB 828941 A GB828941 A GB 828941A GB 828941 A GB828941 A GB 828941A GB 548896 A GB548896 A GB 548896A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- per cent
- oxide
- glass
- fluorine
- 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.)
- Expired
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
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
- C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
Abstract
548,896. Glass manufacture. JACKSON, L. MELLERSH- (Hartford-Empire Co.). July 1, 1941, No. 8289. [Class 56] A clear transparent soda-lime glass is composed of 74.5-80 per cent. of silica, 1.5-6.0 per cent. of R 2 O 3 , 2.0-10.0 per cent. of RO, 10.0-14.5 per cent. of alkali, and 0.15-0.8 per cent. of fluorine. In this composition the term R 2 O 3 includes certain mixed oxides, principally alumina with relatively small amounts of iron oxide, zirconium oxide, and titanium oxide present as impurities. The term RO includes bivalent oxides, particularly lime, magnesia, zinc oxide, and barium oxide. Part of the alkali may be replaced by boric oxide, and colouring media may be added if required. A suitable batch consists of 1,000 parts by weight of sand, 300 parts of soda ash, 160 parts of dolomite, 150 parts of felspar, 10 parts of saltcake, 2 parts of nitre, 1 part of arsenic, and 15 parts of fluorspar. Compositions of a number of glasses, and a method of analyzing glass for fluorine, are given in the Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB828941A GB548896A (en) | 1941-07-01 | 1941-07-01 | Improvements in or relating to glass compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB828941A GB548896A (en) | 1941-07-01 | 1941-07-01 | Improvements in or relating to glass compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548896A true GB548896A (en) | 1942-10-28 |
Family
ID=9849661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB828941A Expired GB548896A (en) | 1941-07-01 | 1941-07-01 | Improvements in or relating to glass compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB548896A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0757020A1 (en) * | 1995-02-10 | 1997-02-05 | Asahi Glass Company Ltd. | Scratch-resistant glass |
-
1941
- 1941-07-01 GB GB828941A patent/GB548896A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0757020A1 (en) * | 1995-02-10 | 1997-02-05 | Asahi Glass Company Ltd. | Scratch-resistant glass |
| EP0757020A4 (en) * | 1995-02-10 | 1998-11-25 | Asahi Glass Co Ltd | Scratch-resistant glass |
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