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  4. Mordanting of filter dyes in photographic materials
 
patent

Mordanting of filter dyes in photographic materials

Meisel, Ulrich
•
Plaschnick, Dieter
•
Luu, Trong Hong
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1981

Almost all conventional acid filter dyes can be rendered nondiffusing in emulsion or thin auxiliary layers, without lowering their phys.-mech. properties or interference with their bleachability or washing-out during processing by a small amt. of a mordant (I; R1,R2 = C1-4 alkyl; n = 300-600; and X- = anion). Added as storable 5-10% soln. they have a low water absorption and have little effect on the viscosity of gelatin coatings. Thus, 2 solns. were made both contg. gelatin 100 and a pentamethine dye 8, and as mordant soln. A an imide of maleic anhydride interpolymers of US 3,048,487 (CA 59; 7726b) 4 g, and soln. B I (R1,R2 = Me, n = 300, X = Cl-) 4.15 g. A Yielded a 2.3m filter layer having an optical d. of 1.09, and B one of 2.0m and 0.98, resp. The water absorption of the layers was 4.1 and 3.0 g H2O/m2, and the dye diffusion after 2 wet contacts with a layer of unhardened gelatin 43 and 2% (as optical d.), resp. [on SciFinder (R)]

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Type
patent
EPO Family ID

5526212

Author(s)
Meisel, Ulrich
Plaschnick, Dieter
Luu, Trong Hong
Wandrey, Christine  
Bach, Guenter
Jaeger, Werner
Hahn, Mathias
Seehaus, Friedhelm
Linow, Karl Joachim
Philipp, Burkart
Note

Alternative title(s) : (de) Fotografisches material auf basis von halogensilberemulsionen mit diffusionsfest fixierten filterfarbstoffen

EPFL units
LMRP  
DOICountry codeKind codeDate issued

DD153002

Available on Infoscience
February 27, 2006
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/226415
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