GB829428A - Improvements in flint glass - Google Patents
Improvements in flint glassInfo
- Publication number
- GB829428A GB829428A GB3090056A GB3090056A GB829428A GB 829428 A GB829428 A GB 829428A GB 3090056 A GB3090056 A GB 3090056A GB 3090056 A GB3090056 A GB 3090056A GB 829428 A GB829428 A GB 829428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mol
- per cent
- glass
- oct
- added
- 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
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/21—Silica-free oxide glass compositions containing phosphorus containing titanium, zirconium, vanadium, tungsten or molybdenum
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
829,428. Glass compositions. ZEISSSTIFTUNG, C., [trading as JENAER GLASWERK SCHOTT & GEN.]. Oct. 10, 1956 [Oct. 11, 1955], No. 30900/56. Class 56. A transparent flint glass substantially free from fluorine and which has a low optical refraction and high dispersion, contains phos. phorus pentoxide and aluminium oxide, titanium oxide and at least two oxides selected from the oxides of sodium, potassium and magnesium, wherein the molecular ratio between phosphorus pentoxide is within the range 10 : 1 to 2: 1, the amount of aluminium oxide not exceeding 8À5 mol. per cent. P 2 O 5 bonded to one or more metal oxides preferably of Na, K and Mg is added to the frit and up to 5 mol. per cent of K 2 TiF 6 added as fluxing agent. The glass may contain up to 12 mol. per cent of ZnO and conventional melt additives such as SiO 2 and B 2 O 3 to increase stability. A number of examples are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEJ10760A DE1003926B (en) | 1955-10-11 | 1955-10-11 | Practically fluorine-free flint glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB829428A true GB829428A (en) | 1960-03-02 |
Family
ID=7198932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3090056A Expired GB829428A (en) | 1955-10-11 | 1956-10-10 | Improvements in flint glass |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE551665A (en) |
| DE (1) | DE1003926B (en) |
| FR (1) | FR1158141A (en) |
| GB (1) | GB829428A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3490928A (en) * | 1967-01-23 | 1970-01-20 | Bausch & Lomb | Titanium phosphate superflint glass |
-
0
- BE BE551665D patent/BE551665A/xx unknown
-
1955
- 1955-10-11 DE DEJ10760A patent/DE1003926B/en active Pending
-
1956
- 1956-10-05 FR FR1158141D patent/FR1158141A/en not_active Expired
- 1956-10-10 GB GB3090056A patent/GB829428A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1158141A (en) | 1958-06-06 |
| DE1003926B (en) | 1957-03-07 |
| BE551665A (en) |
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