Publication

Mordanting of filter dyes in photographic materials

Jutta Christine Wandrey
1981
Patents

Abstract

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)]

Official source

https://infoscience.epfl.ch/entities/publication/d36aef4d-25c3-4e89-9fcd-82d01cf16828

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Jutta Christine Wandrey
1981
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d36aef4d-25c3-4e89-9fcd-82d01cf16828

About this result

Related concepts (32)

Network layer

In the seven-layer OSI model of computer networking, the network layer is layer 3. The network layer is responsible for packet forwarding including routing through intermediate routers. The network layer provides the means of transferring variable-length network packets from a source to a destination host via one or more networks. Within the service layering semantics of the OSI (Open Systems Interconnection) network architecture, the network layer responds to service requests from the transport layer and issues service requests to the data link layer.

Gelatin

Gelatin or gelatine (from gelatus 'stiff' or 'frozen') is a translucent, colorless, flavorless food ingredient, commonly derived from collagen taken from animal body parts. It is brittle when dry and rubbery when moist. It may also be referred to as hydrolyzed collagen, collagen hydrolysate, gelatine hydrolysate, hydrolyzed gelatine, and collagen peptides after it has undergone hydrolysis. It is commonly used as a gelling agent in food, beverages, medications, drug or vitamin capsules, photographic films, papers, and cosmetics.

Mordant

A mordant or dye fixative is a substance used to set (i.e. bind) dyes on fabrics. It does this by forming a coordination complex with the dye, which then attaches to the fabric (or tissue). It may be used for dyeing fabrics or for intensifying stains in cell or tissue preparations. Although mordants are still used, especially by small batch dyers, it has been largely displaced in industry by directs. The term mordant comes from the Latin mordere, "to bite".

Related publications (11)

Mordanting of filter dyes in photographic materials

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