DE908698C - Process for the production of luminescent screens, in particular for electric discharge lamps - Google Patents
Process for the production of luminescent screens, in particular for electric discharge lampsInfo
- Publication number
- DE908698C DE908698C DEH5616A DEH0005616A DE908698C DE 908698 C DE908698 C DE 908698C DE H5616 A DEH5616 A DE H5616A DE H0005616 A DEH0005616 A DE H0005616A DE 908698 C DE908698 C DE 908698C
- Authority
- DE
- Germany
- Prior art keywords
- electric discharge
- discharge lamps
- production
- luminescent
- luminescent screens
- 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)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Verfahren zur Herstellung lumineszierender Schirme, insbesondere bei elektrischen Entladungslampen Zusatz zum Patent 905 453 Die Erfindung bezieht sich auf die Herstellung elektrischer Entladungslampen, deren Innenwände mit lumineszierenden Schirmen versehen sind, unter Benutzung eines Bindefilms, der durch hydrolysierende Stoffe erzeugt wird.Process for the production of luminescent screens, in particular at electric discharge lamps addendum to patent 905 453 The invention relates to on the manufacture of electric discharge lamps, the inner walls of which are luminescent Shields are provided, using a binding film that is hydrolyzed by Substances is generated.
Es ist bisher bekannt, die Innenwände elektrischer Entladungslampen durch Eingießen von flüssigen Bindemitteln zu benetzen. Dieses Bindemittel wird dann wieder entfernt und die zurückbleibende Menge zu einer klebrigen, dünnen Schicht ausgetrocknet. Auf diese wird dann der lumineszierende Stoff der elektrischen Entladungslampen aufgebracht.It is previously known the inner walls of electric discharge lamps to be wetted by pouring liquid binders. This binder will then removed again and the remaining amount into a sticky, thin layer dried out. The luminescent substance of the electric discharge lamp is then applied to this upset.
Im Patent 905 453 ist unter anderem ein Verfahren aufgeführt, das einen gleichmäßigeren Bindefilm durch hydrolysierende chemische Stoffe ermöglicht, dergestalt, daß zunächst ein Luftstrom, der mit dem Gas oder Dampf der Substanz angereichert ist, durch die geraden oder gebogenen Rohre geleitet wird. Ein zur gleichen Zeit oder nachträglich durch die Rohre hindurchgeblasener feuchter Luftstrom bringt eine dünne, gleichmäßige, klebrige Schicht auf die Innenwand der geraden oder gebogenen Rohre auf. Auf diese kann nach einem entsprechenden Trockenvorgang der lumineszierende Stoff od. dgl. unter Bewegung der Rohre aufgebracht werden. -Nachstehend werden nur chemische Substanzen angegeben, mit denen das in dem Hauptpatent aufgeführte Verfahren besonders zweckmäßig durchgeführt wird.In patent 905 453 a method is listed, among other things, which enables a more uniform binding film by hydrolyzing chemical substances, in such a way that first a stream of air, which is enriched with the gas or vapor of the substance, is passed through the straight or curved tubes. A stream of moist air blown through the pipes at the same time or afterwards applies a thin, even, sticky layer to the inner wall of the straight or curved pipes. After a corresponding drying process, the luminescent substance or the like can be applied to these with movement of the tubes. -In the following, only chemical substances are specified with which the process listed in the main patent is carried out particularly expediently.
Sulfurylchlorid oder Schwefeltrioxyd werden, da sie eine sehr starke hydrolysierendeNeigung haben, für die Aufbringung eines Bindefilms in elektrische Entladungslampen benutzt. Mit diesen Stoffen, gas-oder dampfförmig, kann ein Luftstrom angereichert werden und dieser oder diese Stoffe selbst, gleich in welcher Form, direkt in das gerade oder gebogene Rohr geleitet werden. Durch Einwirkung von Feuchtigkeit, gleich in welcher Art, tritt eine Hydrolysierung ein, die einen gleichmäßig verteilten Bindefilm ergibt. Die als Hydrolyseprodukt auftretenden Chlorwasserstoffdämpfe sind zweckmäßig gleichzeitig oder nachträglich auszublasen.Sulfuryl chloride or sulfur trioxide are used as they are very strong have hydrolyzing tendency for the application of a binding film in electrical Discharge lamps used. With these substances, in gaseous or vaporous form, an air stream can be created are enriched and this or these substances themselves, in whatever form, be fed directly into the straight or curved pipe. By exposure to moisture, in whatever way, hydrolysis occurs and one is evenly distributed Binding film results. The hydrogen chloride vapors occurring as a hydrolysis product are expediently blown out at the same time or afterwards.
In Abwandlung kann auch -Phosphortrichlorid verwendet werden. Die sich dabei bildende phosphorige Säure dient auf Grund ihrer großen Viskosität als Bindefilm. Nach dem Auftragen des Leuchtstoffpulvers und einem anschließenden Ausheizen der elektrischen Entladungslampe bildet die phosphorige Säure mit den in den Lumineszenzstoffenvorhandenen Metalloxyden zunächst Phosphite, die bei steigender Temperatur in Phosphate übergehen. Parallelgehend zur Phosphatbildung läuft gemäß den untenstehenden Gleichungen 3 a bis 3 c eine Phosphidbildung ab.As a modification, phosphorus trichloride can also be used. the The phosphorous acid that forms in the process serves due to its high viscosity as Binding film. After applying the fluorescent powder and then baking it out of the electric discharge lamp forms the phosphorous acid with those present in the luminescent substances Metal oxides initially phosphites, which transform into phosphates when the temperature rises. Parallel to the formation of phosphate, equations 3 below run a to 3 c from a phosphide formation.
i. P C13 -- 3 11,0 = H3 P 03 -E- 3 HCl 2a. H@P03 -t- Me0 = MeHP03 + 11,0 (Me bedeutet zweiwertiges Metall) 2b.3 MeHP03 = Me3(P04)2 -E- PH3 3a.2PH3=2P+3Hz 3b. H2 + Me 0 = Me .+ H20 3c.3Me+2P=Me3P2i. P C13-3 11.0 = H3 P 03 -E- 3 HCl 2a. H @ P03 -t- Me0 = MeHP03 + 11.0 (Me means divalent metal) 2b.3 MeHP03 = Me3 (P04) 2 -E- PH3 3a.2PH3 = 2P + 3Hz 3b. H2 + Me 0 = Me. + H20 3c.3Me + 2P = Me3P2
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH5616A DE908698C (en) | 1950-09-27 | 1950-09-27 | Process for the production of luminescent screens, in particular for electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH5616A DE908698C (en) | 1950-09-27 | 1950-09-27 | Process for the production of luminescent screens, in particular for electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
DE908698C true DE908698C (en) | 1954-04-08 |
Family
ID=7144439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH5616A Expired DE908698C (en) | 1950-09-27 | 1950-09-27 | Process for the production of luminescent screens, in particular for electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE908698C (en) |
-
1950
- 1950-09-27 DE DEH5616A patent/DE908698C/en not_active Expired
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