GB669392A - Process for coating vitreous surfaces with powdered luminescent materials - Google Patents
Process for coating vitreous surfaces with powdered luminescent materialsInfo
- Publication number
- GB669392A GB669392A GB935648A GB935648A GB669392A GB 669392 A GB669392 A GB 669392A GB 935648 A GB935648 A GB 935648A GB 935648 A GB935648 A GB 935648A GB 669392 A GB669392 A GB 669392A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- soluble
- luminescent materials
- luminescent
- coating
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
669,392. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd., ANDERSON, J. T., and WARD, H. F. April 29, 1949 [April 2, 1948], No. 9356/48. Class 39 (i). Process for coating a vitreous surface, e.g. a fluorescent lamp tube, with powdered luminescent material comprises coating the surface with a suspension of the material in a water solution of an organic material (other than ammonium alginate) which is capable of giving at least moderately viscous solutions and which, when heated to a decomposition temperature, leaves only a small or no residual ash, and thereafter heating the coating so formed to a temperature at which decomposition takes place. The water-soluble organic material may consist of water-soluble starch or a watersoluble cellulose such as methyl cellulose or glycoll cellulose or the water-soluble variety of " Cellophas " or a salt of alginic acid (other than ammonium alginate) such as triethanolamine alginate. A wetting agent such as that known under the Registered Trade Mark " Teepol X " which leaves no deleterious residuum after the heating to the decomposition temperature may be added to the suspension of the luminescent material. In cases where the luminescent material is readily wet by water the material may either be previously wetted with water containing the wetting agent, the material being subsequently thoroughly washed with successive lots of distilled water to remove substantially the whole of the wetting agent,'or the material may be immersed, with or without agitating, in water. The wetted powder is then added to the binder without intermediate drying. The process is applicable both to luminescent materials which are not readily soluble in water and to luminescent materials which are readily soluble in, or attacked by, water, if the process is carried out sufficiently quickly to ensure that the period of contact of the material with water is restricted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB935648A GB669392A (en) | 1948-04-02 | 1948-04-02 | Process for coating vitreous surfaces with powdered luminescent materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB935648A GB669392A (en) | 1948-04-02 | 1948-04-02 | Process for coating vitreous surfaces with powdered luminescent materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB669392A true GB669392A (en) | 1952-04-02 |
Family
ID=9870352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB935648A Expired GB669392A (en) | 1948-04-02 | 1948-04-02 | Process for coating vitreous surfaces with powdered luminescent materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB669392A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE956612C (en) * | 1952-08-30 | 1957-01-24 | Westinghouse Electric Corp | Mixture of substances for the production of fluorescent coating layers on glass surfaces and process for the production of this mixture of substances |
US2895854A (en) * | 1956-09-28 | 1959-07-21 | Philco Corp | Method of making cathode assemblies and products |
-
1948
- 1948-04-02 GB GB935648A patent/GB669392A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE956612C (en) * | 1952-08-30 | 1957-01-24 | Westinghouse Electric Corp | Mixture of substances for the production of fluorescent coating layers on glass surfaces and process for the production of this mixture of substances |
US2895854A (en) * | 1956-09-28 | 1959-07-21 | Philco Corp | Method of making cathode assemblies and products |
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