GB233295A - Improvements in or relating to readily fusible glasses and enamels - Google Patents
Improvements in or relating to readily fusible glasses and enamelsInfo
- Publication number
- GB233295A GB233295A GB24392/24A GB2439224A GB233295A GB 233295 A GB233295 A GB 233295A GB 24392/24 A GB24392/24 A GB 24392/24A GB 2439224 A GB2439224 A GB 2439224A GB 233295 A GB233295 A GB 233295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enamels
- glasses
- oxides
- fused
- molecular composition
- 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
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)
- Laminated Bodies (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
233,295. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. fiir Elektrische Gl³hlampen). May 5, 1924, [Convention date]. Addition to 223,837. Enamels.-The glasses and enamels described in the parent Specification are made more resistant to chemical action by increasing the silica content, the boric acid content being decreased at the same time in order to maintain the low fusing-point. The alkaline or alkaline earth oxides, selected in accordance with the typical molecular composition given in the parent Specification, are preferably replaced more or less by other oxides, such as those of zinc, magnesium, calcium, barium, or lithium, which reduce the coefficient of expansion. The resultant glasses and enamels have the following molecular composition:-PbO, 1; Zn O (or Al2 O3, Ca O, Mg O, BaO), 0.04 to 0.15; Si O2, 0.3 to 0.6; Li2 O (or aNa2O, K2O), 0.04 to 0.15; B2 O3, 0.23 to 0.35; colouring oxide 0 to 0.1. For making the enamel opaque, fluorides such as cryolite or calcium fluoride can be fused. with the material, or refractory oxides and salts of metals may be added during the powdering of the fused material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE233295X | 1924-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB233295A true GB233295A (en) | 1925-05-14 |
Family
ID=5885362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24392/24A Expired GB233295A (en) | 1924-05-05 | 1924-10-14 | Improvements in or relating to readily fusible glasses and enamels |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB233295A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2425032A (en) * | 1944-08-24 | 1947-08-05 | Du Pont | Enamel for resistors |
| US2431980A (en) * | 1944-10-11 | 1947-12-02 | Corning Glass Works | Glass having low power factor |
| US2487119A (en) * | 1946-10-04 | 1949-11-08 | Metalloy Corp | Porcelain enamel compositions containing lithium manganite and/or lithium cobaltite |
| US2907665A (en) * | 1956-12-17 | 1959-10-06 | Cons Electrodynamics Corp | Vitreous enamel |
-
1924
- 1924-10-14 GB GB24392/24A patent/GB233295A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2425032A (en) * | 1944-08-24 | 1947-08-05 | Du Pont | Enamel for resistors |
| US2431980A (en) * | 1944-10-11 | 1947-12-02 | Corning Glass Works | Glass having low power factor |
| US2487119A (en) * | 1946-10-04 | 1949-11-08 | Metalloy Corp | Porcelain enamel compositions containing lithium manganite and/or lithium cobaltite |
| US2907665A (en) * | 1956-12-17 | 1959-10-06 | Cons Electrodynamics Corp | Vitreous enamel |
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