DE489152C - Process for the post-treatment of colloid layers treated with saline solutions - Google Patents
Process for the post-treatment of colloid layers treated with saline solutionsInfo
- Publication number
- DE489152C DE489152C DER73465D DER0073465D DE489152C DE 489152 C DE489152 C DE 489152C DE R73465 D DER73465 D DE R73465D DE R0073465 D DER0073465 D DE R0073465D DE 489152 C DE489152 C DE 489152C
- Authority
- DE
- Germany
- Prior art keywords
- colloid layers
- post
- treatment
- saline solutions
- layers treated
- 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
Landscapes
- Colloid Chemistry (AREA)
Description
Verfahren zur Nachbehandlung von mit Salzlösungen behandelten Kolloidschichten Bei der Tränkung von mit Gelatine, Leim oder sonstigen Kolloiden beschichteten Platten oder Filmen mit entweder Chromat und Metallsalzen oder Chromat in Verbindung mit Metallsalzen enthaltenden wäßrigen Lösungen oder solchen alkoholhaltigen wäßrigen Lösungen hat sich gezeigt, daß: nach dem Trocknen auf der Oberfläche- dieser getrünkten Schichten Kristallausscheidungen auftreten. Diese Ausscheidungen sind um so stärker, je hochprozentig-er die Lösungen gehalten werden. Diese Kristallablagerungen verhindern beim. Kopieren eine gleichmäßigeDurchbelichtung, auch ist die Schicht ungleich empfindlich. Bei der nach dem Kopieren erfolgenden Einfärbung der Schicht treten diese Unterschiede störend in die Erscheinung.Process for the aftertreatment of colloid layers treated with salt solutions When impregnating plates or films coated with gelatin, glue or other colloids with either chromate and metal salts or chromate in connection with metal salts containing aqueous solutions or such alcoholic aqueous solutions has been shown that: after Drying on the surface - these soaked layers cause crystal precipitates. These excretions are all the stronger, the more the solutions are kept with a high percentage. These crystal deposits prevent the. Copying a uniform through-exposure, and the layer is also unevenly sensitive. When the layer is colored after copying, these differences appear disturbing.
Es hat sich in der Pra#ds ergeben, daß diese Ausscheidungen nicht oder nur in ganz geringem Maße auftreten, wenn die in obigen Bädern behandelten Kolloidschichten in einer alkoholhaltigen -wäßrigen. Lösung nachbehandelt werden, welche beispielsweise io ()/o eines Alkohols enthält.It has emerged in the Pra # ds that these eliminations are not or occur only to a very minor extent if those treated in the above baths Colloid layers in an alcohol-containing aqueous solution. Solution to be post-treated, which contains, for example, io () / o of an alcohol.
Diese Nachbehandlung kann erfolgen: entweder durch Durchleiten der getränkten Schichten durch die alkoholhaltige wäßrige Lösung oder durch Abspülung der mit vorgenannten Lösungen getränkten Kolloidschichten mit dieser alkoholhaltigen wäßrigen U-sung.This post-treatment can take place: either by passing through the soaked layers by the alcohol-containing aqueous solution or by rinsing the colloid layers soaked with the aforementioned solutions with this alcohol-containing aqueous solution.
Bekannt ist die Nachbehandlung derselben Kolloidschichten mitWasser; es hät sich aber ergeben, daß die Behandlung nut dem alkoholhaltigen Wasser günstiger wirkt.The aftertreatment of the same colloid layers with water is known; It turned out, however, that the treatment with the alcohol-containing water would be more favorable works.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER73465D DE489152C (en) | 1928-01-21 | 1928-01-22 | Process for the post-treatment of colloid layers treated with saline solutions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE304597X | 1928-01-21 | ||
DER73465D DE489152C (en) | 1928-01-21 | 1928-01-22 | Process for the post-treatment of colloid layers treated with saline solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
DE489152C true DE489152C (en) | 1930-01-14 |
Family
ID=25789557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER73465D Expired DE489152C (en) | 1928-01-21 | 1928-01-22 | Process for the post-treatment of colloid layers treated with saline solutions |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE489152C (en) |
-
1928
- 1928-01-22 DE DER73465D patent/DE489152C/en not_active Expired
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