VERFAHREN ZUR VERHINDERUNG DER BILDUNG VON KONTAKTFLECKEN AUF PHOTOGRAPHISCHEN MATERIALIEN
In a process for preventing the contact spots formed by contact of the back coating of photographic material with the emulsion side an aqueous polymer dispersion obtained by polymerization of halogen-free compounds and polyvinyl alcohol or partially acetylated polyvinyl alcohol in the presence of an...
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Main Authors | , |
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Format | Patent |
Language | German |
Published |
21.07.1977
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Edition | 2 |
Subjects | |
Online Access | Get full text |
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Summary: | In a process for preventing the contact spots formed by contact of the back coating of photographic material with the emulsion side an aqueous polymer dispersion obtained by polymerization of halogen-free compounds and polyvinyl alcohol or partially acetylated polyvinyl alcohol in the presence of an anionic emulsifier are added to the casting composition applied as outermost back coating and/or as uppermost layer. |
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Bibliography: | Application Number: DE19762601377 |