GB733142A - Vitreous enamel - Google Patents

Vitreous enamel

Info

Publication number
GB733142A
GB733142A GB21127/50A GB2112750A GB733142A GB 733142 A GB733142 A GB 733142A GB 21127/50 A GB21127/50 A GB 21127/50A GB 2112750 A GB2112750 A GB 2112750A GB 733142 A GB733142 A GB 733142A
Authority
GB
United Kingdom
Prior art keywords
cao
per cent
tio
pbo
sio
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
Application number
GB21127/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WMF Group GmbH
Original Assignee
WMF Group GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WMF Group GmbH filed Critical WMF Group GmbH
Publication of GB733142A publication Critical patent/GB733142A/en
Expired legal-status Critical Current

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
    • 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

733,142. Enamels. WURTTEMBERGISCHE METALLWARENFABRIK. Aug. 25, 1950 [Sept. 15, 1949; March 29, 1950], No. 21127/50. Drawings to Specification. Class 56. A vitreous enamel, for use as an electrical insulator at elevated temperatures, consisting of 20-40 per cent SiO 2 , 40-65 per cent PbO and/or BaO, and up to 25 per cent of one or more of B 2 O 3 , CaO, Al 2 O 3 and TiO 2 , with or without auxiliary substances colouring oxides, clouding agents or the like, the maximum proportions of B 2 O 3 , CaO, Al 2 O 8 and TiO 2 being 5, 6, 6 and 15 per cent respectively, and any alkali oxides occurring only as impurities. The expansion coefficient of the enamel is readily varied by varying the proportion of titanium oxide present. The weight percentage compositions of two examples are follows : (1) PbO 47.5, CaO 4.2, Al 2 O 3 6.0, SiO 2 36.6, B 2 O 3 4.6, Cr 2 O 3 , or other colouring oxides 1.1; (2) PbO 46.30, BaO 13.25, CaO 2.90, Al 2 O 3 0.53, SiO 2 25.00, B 2 O 3 4.85, TiO 2 6.66, Cr 2 O 3 , or other colouring oxides, 0.51. A graphic representation showing the electric conductivity in terms of the reciprocal of ohms per centimetre over a temperature range from about 20-500‹ C. are given for both known enamels and the enamels according to the invention.
GB21127/50A 1949-09-15 1950-08-25 Vitreous enamel Expired GB733142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE733142X 1949-09-15

Publications (1)

Publication Number Publication Date
GB733142A true GB733142A (en) 1955-07-06

Family

ID=6640346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21127/50A Expired GB733142A (en) 1949-09-15 1950-08-25 Vitreous enamel

Country Status (2)

Country Link
FR (1) FR1024135A (en)
GB (1) GB733142A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053077A (en) * 1988-06-30 1991-10-01 Crompton Design Manufacturing Limited Fire resistant paint or coating using frits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053077A (en) * 1988-06-30 1991-10-01 Crompton Design Manufacturing Limited Fire resistant paint or coating using frits

Also Published As

Publication number Publication date
FR1024135A (en) 1953-03-27

Similar Documents

Publication Publication Date Title
GB855900A (en) Lanthanum borosilicate glass
GB774248A (en) Glass compositions
GB1101675A (en) Glass composition
GB743322A (en) Electrically-heated appliance, in particular a vessel for cooking, roasting or baking
GB629049A (en) Improved manufacture of soft glass having wide working range
US2584974A (en) Optical glass
US2688560A (en) Eye-protective ophthalmic glass
GB1118513A (en) Glass compositions
GB855944A (en) Glass composition and method of making it
GB619971A (en) Improved manufacture of optical glass
GB625466A (en) Improvements relating to glass compositions
GB531146A (en) Improvements in and relating to glazes and enamels
GB733142A (en) Vitreous enamel
GB634548A (en) Improvements relating to glass compositions
GB589202A (en) Improved glass composition
GB670241A (en) Improvements in and relating to electric discharge tubes
GB710064A (en) Improvements in and relating to silicon enamel pigments
GB940706A (en) A crystalline or vitreous-crystalline devitrified glass having a negative or very low and positive thermal expansion coefficient
US2474636A (en) Vitreous enamel opacification and process
GB826306A (en) Opaque enamels
GB618656A (en) Improved manufacture of optical glass
GB620092A (en) Improvements in and relating to glasses having a low coefficient of expansion
GB574275A (en) Improvements in glasses containing lead
GB728808A (en) Ultra-violet transmitting glass
GB724374A (en) Glass-like composition and method for making the same