GB282768A - - Google Patents
Info
- Publication number
- GB282768A GB282768A GB34873/27A GB3487327A GB282768A GB 282768 A GB282768 A GB 282768A GB 34873/27 A GB34873/27 A GB 34873/27A GB 3487327 A GB3487327 A GB 3487327A GB 282768 A GB282768 A GB 282768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxide
- parts
- silica
- proportion
- aluminium
- 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
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
282,768. Trenzen, C. Dec. 31, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Production of metal. - A glass which resists attack by boiling water, and is particularly intended for making laboratory ware contains a high proportion of silica, preferably about 75 per cent, together with boric oxide, aluminium oxide. and zinc oxide. The proportion by weight of alkaline earth oxide to silica is about 1 to 7.1, the proportion of sodium oxide to silica is about 1 to 6.52, and of sodium oxide to potassium oxide is about 5 to 1. The proportion of boron trioxide to silica is about 1 to 300, and to zinc oxide about 1 to 1.2. The proportions of boron trioxide and aluminium oxide are about equal. A batch for making a glass having the proportions given above comprises 72 parts by weight of silica, 0.625 parts of borax, 18 parts of pure calcined soda, 3 parts of pure carbonate of potash, 1.5 parts of sodium nitrate, 0.25 parts of oxide of aluminium, 0.3 parts of oxide of zinc, and 18 parts of pure carbonate of lime.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE282768T | 1926-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB282768A true GB282768A (en) | 1928-04-26 |
Family
ID=31893828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34873/27A Expired GB282768A (en) | 1926-12-31 | 1927-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB282768A (en) |
-
1927
- 1927-12-23 GB GB34873/27A patent/GB282768A/en not_active Expired
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