IE44592L - Photochromic glass. - Google Patents
Photochromic glass.Info
- Publication number
- IE44592L IE44592L IE770195A IE19577A IE44592L IE 44592 L IE44592 L IE 44592L IE 770195 A IE770195 A IE 770195A IE 19577 A IE19577 A IE 19577A IE 44592 L IE44592 L IE 44592L
- Authority
- IE
- Ireland
- Prior art keywords
- glass
- less
- weight
- content
- li2o
- Prior art date
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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- 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
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% 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
- C03C4/04—Compositions for glass with special properties for photosensitive glass
- C03C4/06—Compositions for glass with special properties for photosensitive glass for phototropic or photochromic glass
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)
- Eyeglasses (AREA)
Abstract
Fast-response alumino-phosphate photochromic glasses having silver halide crystals dispersed throughout the glass comprise, in weight percentages: SiO2 8.5 to 25% Al2O3 13 to 36.5% P2O5 7.5 to 33.5% B2O3 7 to 28% R2O 7 to 20.5% where R2O represents at least one of Na2O, K2O and Li2O, the maximum content of Li2O being 5%; the amount of SiO2 is not less than 16% when the B2O3 content is less than 8%; and the silver content of the glass, expressed as Ag2O, is not less than 0.05% by weight. Such glasses in which Al2O3 is the largest constituent are preferred for ophthalmic purposes, but it is also possible for either B2O3 or P2O5 to be the largest constituent. The glass can also contain 1% to 21% by weight R'O where R'O represents MgO, CaO, SrO or BaO. The refractive index can be corrected by nD = 1.523.
[CA1092876A]
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3814/76A GB1515642A (en) | 1976-01-30 | 1976-01-30 | Photochromic glasses |
| GB1441576 | 1976-04-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE44592L true IE44592L (en) | 1977-07-30 |
| IE44592B1 IE44592B1 (en) | 1982-01-27 |
Family
ID=26238614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE195/77A IE44592B1 (en) | 1976-01-30 | 1977-01-31 | Improvements relating to photochromic glasses |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS52110715A (en) |
| AR (1) | AR214873A1 (en) |
| AU (1) | AU509106B2 (en) |
| BR (1) | BR7700546A (en) |
| CA (1) | CA1092876A (en) |
| CS (1) | CS205067B2 (en) |
| DD (1) | DD128804A5 (en) |
| DE (1) | DE2703916A1 (en) |
| DK (1) | DK39477A (en) |
| ES (1) | ES455485A1 (en) |
| FR (1) | FR2357495A1 (en) |
| HK (1) | HK7079A (en) |
| IE (1) | IE44592B1 (en) |
| IL (1) | IL51352A (en) |
| IN (1) | IN145716B (en) |
| IT (1) | IT1082725B (en) |
| LU (1) | LU76671A1 (en) |
| MX (1) | MX3963E (en) |
| NL (1) | NL7700902A (en) |
| NZ (1) | NZ183180A (en) |
| PH (1) | PH14228A (en) |
| SE (1) | SE414166B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190451A (en) * | 1978-03-17 | 1980-02-26 | Corning Glass Works | Photochromic glass |
| BR8004828A (en) * | 1979-08-09 | 1981-02-10 | Pilkington Brothers Ltd | PROCESS TO PRODUCE A PHOTOCHROMIC GLASS AND PHOTOCHROMIC GLASS OBTAINED |
| KR20180095559A (en) | 2015-12-17 | 2018-08-27 | 코닝 인코포레이티드 | Ion exchangeable glass with fast diffusion |
| GB2589762B (en) * | 2018-06-29 | 2023-03-08 | Univ Manitoba | Increased molybdenum and sulfur solubility in aluminoborosilicate glasses with added phosphorus |
| CN112979161A (en) * | 2021-03-10 | 2021-06-18 | 昆明理工大学 | Preparation method and application of tungsten phosphate glass based on photochromic effect |
-
1977
- 1977-01-25 CA CA270,457A patent/CA1092876A/en not_active Expired
- 1977-01-26 AU AU21647/77A patent/AU509106B2/en not_active Expired
- 1977-01-26 NZ NZ183180A patent/NZ183180A/en unknown
- 1977-01-28 IN IN116/CAL/77A patent/IN145716B/en unknown
- 1977-01-28 IT IT67194/77A patent/IT1082725B/en active
- 1977-01-28 NL NL7700902A patent/NL7700902A/en not_active Application Discontinuation
- 1977-01-28 BR BR7700546A patent/BR7700546A/en unknown
- 1977-01-28 DD DD7700197137A patent/DD128804A5/en unknown
- 1977-01-28 FR FR7702367A patent/FR2357495A1/en active Granted
- 1977-01-28 PH PH19394A patent/PH14228A/en unknown
- 1977-01-28 IL IL51352A patent/IL51352A/en unknown
- 1977-01-29 ES ES455485A patent/ES455485A1/en not_active Expired
- 1977-01-31 IE IE195/77A patent/IE44592B1/en unknown
- 1977-01-31 CS CS77625A patent/CS205067B2/en unknown
- 1977-01-31 SE SE7700997A patent/SE414166B/en unknown
- 1977-01-31 DE DE19772703916 patent/DE2703916A1/en not_active Ceased
- 1977-01-31 MX MX776963U patent/MX3963E/en unknown
- 1977-01-31 LU LU76671A patent/LU76671A1/xx unknown
- 1977-01-31 DK DK39477A patent/DK39477A/en not_active Application Discontinuation
- 1977-01-31 AR AR266376A patent/AR214873A1/en active
- 1977-01-31 JP JP884877A patent/JPS52110715A/en active Granted
-
1979
- 1979-02-08 HK HK70/79A patent/HK7079A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DD128804A5 (en) | 1977-12-14 |
| JPS52110715A (en) | 1977-09-17 |
| SE7700997L (en) | 1977-07-31 |
| NZ183180A (en) | 1979-03-16 |
| AR214873A1 (en) | 1979-08-15 |
| MX3963E (en) | 1981-10-16 |
| NL7700902A (en) | 1977-08-02 |
| IE44592B1 (en) | 1982-01-27 |
| CS205067B2 (en) | 1981-04-30 |
| BR7700546A (en) | 1977-10-04 |
| SE414166B (en) | 1980-07-14 |
| FR2357495A1 (en) | 1978-02-03 |
| PH14228A (en) | 1981-04-09 |
| CA1092876A (en) | 1981-01-06 |
| IT1082725B (en) | 1985-05-21 |
| DK39477A (en) | 1977-07-31 |
| LU76671A1 (en) | 1977-06-27 |
| ES455485A1 (en) | 1978-06-01 |
| DE2703916A1 (en) | 1977-08-04 |
| JPS569465B2 (en) | 1981-03-02 |
| AU2164777A (en) | 1978-08-03 |
| AU509106B2 (en) | 1980-04-17 |
| FR2357495B1 (en) | 1982-04-16 |
| IL51352A0 (en) | 1977-03-31 |
| HK7079A (en) | 1979-02-16 |
| IL51352A (en) | 1981-07-31 |
| IN145716B (en) | 1978-12-02 |
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