GB1418093A - Glasses having a low coefficient of thermal expansion - Google Patents
Glasses having a low coefficient of thermal expansionInfo
- Publication number
- GB1418093A GB1418093A GB2086673A GB2086673A GB1418093A GB 1418093 A GB1418093 A GB 1418093A GB 2086673 A GB2086673 A GB 2086673A GB 2086673 A GB2086673 A GB 2086673A GB 1418093 A GB1418093 A GB 1418093A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thermal expansion
- weight
- glasses
- low coefficient
- bao
- 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
- C03C4/00—Compositions for glass with special properties
- C03C4/005—Compositions for glass with special properties for opaline glass
-
- 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
-
- 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
-
- 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
- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/04—Opaque glass, glaze or enamel
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
1418093 Borosilicate opal glass SOC DES VERRERIES INDUSTRIELLES REUNIES DU LOING 2 May 1973 [3 May 1972] 20866/73 Addition to 1000062 Heading C1M A borosilicate opal glass which is opaque or strongly opalescent has a coefficient of thermal expansion from 25 to 40 x 10<SP>-7</SP> per ‹C. between 0‹ and 300‹ C. and consists essentially of the following constituents (per cent by weight): 70-76 SiO 2 , 11À5-13À5 B 2 O 3 , 7À5-10 ZnO, 2À2-3À3 BaO, and 1À7-2À05 Na 2 O. Other components may be present in total up to about 3% by weight, e.g. 0À8% TiO, 0À08-0À09% ZrO 2 , 0À02-0À03% Fe 2 O 3 , 0À05-0À5% Al 2 O 3 . Comparative-examples disclose specific compositions containing, in per cent by weight: 71À8-73À8 SiO 2 , 12-14À3 B 2 O 3 , 7À15-10À6 ZnO, 0-3À7 BaO, 0-0À95 Li 2 O, 1À9-3À2% Na 2 O, 0-0À8 TiO 2 , 0-0À05 Al 2 O 3 , 0-1À35 ZrO 2 and 0-0À04 Fe 2 O 3 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7215605A FR2182653B2 (en) | 1972-05-03 | 1972-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1418093A true GB1418093A (en) | 1975-12-17 |
Family
ID=9097876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2086673A Expired GB1418093A (en) | 1972-05-03 | 1973-05-02 | Glasses having a low coefficient of thermal expansion |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE798559R (en) |
| DE (1) | DE2321805A1 (en) |
| FR (1) | FR2182653B2 (en) |
| GB (1) | GB1418093A (en) |
| IT (1) | IT1205869B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL274292A (en) * | 1961-02-03 |
-
1972
- 1972-05-03 FR FR7215605A patent/FR2182653B2/fr not_active Expired
-
1973
- 1973-04-20 BE BE130289A patent/BE798559R/en active
- 1973-04-30 DE DE19732321805 patent/DE2321805A1/en active Pending
- 1973-05-02 GB GB2086673A patent/GB1418093A/en not_active Expired
- 1973-05-25 IT IT2462573A patent/IT1205869B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2182653A2 (en) | 1973-12-14 |
| FR2182653B2 (en) | 1978-10-20 |
| IT1205869B (en) | 1989-03-31 |
| BE798559R (en) | 1973-10-22 |
| DE2321805A1 (en) | 1973-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 694A | Case decided by the comptroller (rule 94(3)/1968) | ||
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |