DE219045C - - Google Patents
Info
- Publication number
- DE219045C DE219045C DENDAT219045D DE219045DA DE219045C DE 219045 C DE219045 C DE 219045C DE NDAT219045 D DENDAT219045 D DE NDAT219045D DE 219045D A DE219045D A DE 219045DA DE 219045 C DE219045 C DE 219045C
- Authority
- DE
- Germany
- Prior art keywords
- parts
- solution
- water
- weight
- phosphoric acid
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.
Claims (1)
- Patent-Anspruch:Verfahren zum Ätzen von Flachdruckformen aus Eisen, dadurch gekennzeichnet, daß man die Platten erst in einer Lösung von 40 Teilen Kristallsoda, 33 Teilen Phosphorsäurelösung von 1,154 sPez· Gewicht und 17 Teilen Kaliumbichromat in 2000 Teilen Wasser badet, nach dem Aufbringen des Umdrucks mit einer Lösung von 80 Teilen Phosphorsäurelösung von 1,154 sPez· Gewicht, 6 Teilen Chromsäure und 26 Teilen Natriumbichromat in 400 Teilen Wasser anätzt und schließlich mit einer Lösung von 45 Teilen zweifachsaurem Kaliumphosphat, 15 Teilen KäliumfLuorid und 1 Teil Natriumbichromat in 100 Teilen Wasser nachätzt.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE219045C true DE219045C (de) |
Family
ID=480209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT219045D Active DE219045C (de) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE219045C (de) |
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0
- DE DENDAT219045D patent/DE219045C/de active Active
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