GB625474A - Improvements in the manufacture of lead silicate frits and enamel fluxes - Google Patents
Improvements in the manufacture of lead silicate frits and enamel fluxesInfo
- Publication number
- GB625474A GB625474A GB690947A GB690947A GB625474A GB 625474 A GB625474 A GB 625474A GB 690947 A GB690947 A GB 690947A GB 690947 A GB690947 A GB 690947A GB 625474 A GB625474 A GB 625474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silicate
- coated
- podmore
- disintegrated
- frit
- 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
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
-
- 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
- C03C4/00—Compositions for glass with special properties
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
625,474. Coated enamels &c. PODMORE & SONS, Ltd., W., and PODMORE, H. L. March 12, 1947, No. 6909. [Class 56] Finely ground particles of lead silicate frits and enamel fluxes are coated with a thin layer of a material which is impervious to and insoluble in weak acid solution. Alkali or organo silicates may be used, e.g. a coating may consist of silica gel formed by the hydrolysis of an alkali silicate, or of ethoxy polymers formed by the condensation of ethyl silicate or ethyl silicate cellulose nitrate lacquer. In one example the frit is wet ground so that 95 per cent passes a 200 B.S.S., deflocculated, the particles of less than .01 mm. diameter removed and the remainder dried and disintegrated. The powder is then mixed with a partly hydrolysed solution of ethyl silicate in aqueous ethyl alcohol, such that a gel is formed soon after the surplus liquid is filtered off. The coated frit is air dried, at not more than 200‹C, and disintegrated. The resultant is not attacked by gastric juices and the danger of lead poisoning among enamelling operatives is thereby reduced. When two separate coatings are applied in this way a more effective product is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB690947A GB625474A (en) | 1947-03-12 | 1947-03-12 | Improvements in the manufacture of lead silicate frits and enamel fluxes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB690947A GB625474A (en) | 1947-03-12 | 1947-03-12 | Improvements in the manufacture of lead silicate frits and enamel fluxes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB625474A true GB625474A (en) | 1949-06-28 |
Family
ID=9823043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB690947A Expired GB625474A (en) | 1947-03-12 | 1947-03-12 | Improvements in the manufacture of lead silicate frits and enamel fluxes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB625474A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119338A (en) * | 1982-05-03 | 1983-11-16 | Sig Schweiz Industrieges | Diverting streams of objects in a processing path |
-
1947
- 1947-03-12 GB GB690947A patent/GB625474A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2119338A (en) * | 1982-05-03 | 1983-11-16 | Sig Schweiz Industrieges | Diverting streams of objects in a processing path |
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