GB533361A - Improvements in and relating to heat resisting glass - Google Patents
Improvements in and relating to heat resisting glassInfo
- Publication number
- GB533361A GB533361A GB2312239A GB2312239A GB533361A GB 533361 A GB533361 A GB 533361A GB 2312239 A GB2312239 A GB 2312239A GB 2312239 A GB2312239 A GB 2312239A GB 533361 A GB533361 A GB 533361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- oxide
- relating
- resisting glass
- baryta
- 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
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
-
- 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
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
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)
- Ceramic Engineering (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
533,361. Glass manufacture. BRITISH THOMSON-HOUSTON CO., Ltd., and STANWORTH, J. E. Aug. 10, 1939, No. 23122. [Class 56] Heat-resisting glass, suitable for the envelopes of high-pressure mercury discharge lamps, is made from a batch containing 20-28 per cent. of alumina, 4-5 per cent. of boric oxide and phosphoric oxide together, and 14-16 per cent. lime, baryta, and magnesia together, the whole or the greater part of the remainder consisting of silica. The proportion of phosphoric oxide is not more than 2 per cent. and of lime is not less than 5 per cent. and not greater than 12 per cent., the proportion of, either baryta or magnesia not being more than 8 per cent. A small percentage of arsenic oxide, antimony oxide, or other refining agent may replace a portion of the silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2312239A GB533361A (en) | 1939-08-10 | 1939-08-10 | Improvements in and relating to heat resisting glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2312239A GB533361A (en) | 1939-08-10 | 1939-08-10 | Improvements in and relating to heat resisting glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB533361A true GB533361A (en) | 1941-02-12 |
Family
ID=10190459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2312239A Expired GB533361A (en) | 1939-08-10 | 1939-08-10 | Improvements in and relating to heat resisting glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB533361A (en) |
-
1939
- 1939-08-10 GB GB2312239A patent/GB533361A/en not_active Expired
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