GB1346344A - Xa-ray screens - Google Patents
Xa-ray screensInfo
- Publication number
- GB1346344A GB1346344A GB1346344DA GB1346344A GB 1346344 A GB1346344 A GB 1346344A GB 1346344D A GB1346344D A GB 1346344DA GB 1346344 A GB1346344 A GB 1346344A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- layer
- coating
- fluorescent
- acetone
- 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
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 11
- 239000002904 solvent Substances 0.000 abstract 9
- 239000010410 layer Substances 0.000 abstract 8
- 239000011248 coating agent Substances 0.000 abstract 7
- 238000000576 coating method Methods 0.000 abstract 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 6
- 239000011230 binding agent Substances 0.000 abstract 4
- 238000009835 boiling Methods 0.000 abstract 4
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical group CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 abstract 4
- 239000000203 mixture Substances 0.000 abstract 4
- 239000000020 Nitrocellulose Substances 0.000 abstract 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 abstract 3
- 229920002301 cellulose acetate Polymers 0.000 abstract 3
- 229920001220 nitrocellulos Polymers 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 abstract 2
- 229910052791 calcium Inorganic materials 0.000 abstract 2
- 239000011575 calcium Substances 0.000 abstract 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 abstract 2
- 229940116333 ethyl lactate Drugs 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000004014 plasticizer Substances 0.000 abstract 2
- 229920000728 polyester Polymers 0.000 abstract 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 abstract 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 abstract 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 abstract 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 abstract 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 abstract 1
- 229920002284 Cellulose triacetate Polymers 0.000 abstract 1
- 239000005083 Zinc sulfide Substances 0.000 abstract 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 abstract 1
- 229920001727 cellulose butyrate Polymers 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- ZANNOFHADGWOLI-UHFFFAOYSA-N ethyl 2-hydroxyacetate Chemical compound CCOC(=O)CO ZANNOFHADGWOLI-UHFFFAOYSA-N 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 abstract 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000004926 polymethyl methacrylate Substances 0.000 abstract 1
- 229920002689 polyvinyl acetate Polymers 0.000 abstract 1
- 239000011118 polyvinyl acetate Substances 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000004408 titanium dioxide Substances 0.000 abstract 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Luminescent Compositions (AREA)
Abstract
1346344 Coated article ILFORD Ltd 21 June 1972 [23 June 1971] 29493/71 Heading B2E [Also in Division C4] An X-ray intensifying screen is produced by coating on to a dimensionally stable base a dispersion of a fluorescent metal salt in a low-boiling point organic coating solvent or solvent solution of a polymeric binder together with a high boiling solvent selected from those which have an evaporation rate on the ether scale above 35 but below 200, allowing or causing the coating solvent or solvents to evaporate, then coating on to the fluorescent layer while this layer is still moist and before the high-boiling solvent has evaporated a transparent film-forming polymeric material dissolved in a solvent and then drying the resulting screen. Preferably the transparent film-forming polymeric material is applied by spraying. Suitable fluorescent salts are calcium tungstate, zinc sulphide, barium sulphate, lead sulphate. Suitable polymeric binders are cellulose nitrate, cellulose triacetate, cellulose acetate/butyrate, polyvinyl butyral. Suitable polymers for the protective layer are cellulose acetate, cellulose nitrate or polymethyl methacrylate. The coating solvent may be acetone, or a mixture of acetone and ethyl acetate. Preferably the base is a polyester and a lightreflective layer comprising light-reflective particles in a polymeric binder may be first cast on to the base before the fluorescent layer is cast thereon. If the base support is transparent the fluorescent layer may be coated on to the other side of the support to the light-reflecting layer. The preferred high boiling point solvent is ethyl lactate. Preferably the weight of fluorescent salt compared with the binder is 40/1-25/1. In an Example a polyester base web coated with a subbing layer is coated with a reflective coating comprising titanium dioxide dispersed in polyvinyl acetate dissolved in an acetone/alcohol mixture, the coating dried and the composition comprising calcium tungstate, cellulose nitrate, acetone, ethyl acetate, ethyl lactate, dibutyl phthalate (plasticizer) then applied. While the resulting fluorescent layer is still moist there is sprayed thereon a composition comprising cellulose acetate, acetone, alcohol, toluene, methyl cellosolve (Trade Mark) acetate, methyl phthallyl ethyl glycollate (plasticizer). The coated web was then dried.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2949371 | 1971-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1346344A true GB1346344A (en) | 1974-02-06 |
Family
ID=10292426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1346344D Expired GB1346344A (en) | 1971-06-23 | 1971-06-23 | Xa-ray screens |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2230614A1 (en) |
| GB (1) | GB1346344A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188449A (en) * | 1977-08-04 | 1980-02-12 | Eastman Kodak Company | Phosphorescent screens |
| US4298650A (en) * | 1980-03-31 | 1981-11-03 | Eastman Kodak Company | Phosphorescent screens |
-
1971
- 1971-06-23 GB GB1346344D patent/GB1346344A/en not_active Expired
-
1972
- 1972-06-22 DE DE19722230614 patent/DE2230614A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2230614A1 (en) | 1972-12-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |