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| | Color diffusion transfer receiving layer comprising polymeric quaternary n-heterocyclic mordant - Patent 4124386 |
 | | The polymer mordant having the structural unit represented by general formula (I) can be prepared by reacting a homopolymer, copolymer, or graft polymer of a halomethylstyrene, preferably a homopolymer, copolymer, or graft polymer of chloromethylstyrene, and a heterocyclic compound or by quaternizing the monomer with a heterocyclic compound and then polymerizing the product. |
 | | Or, further, the polymer mordant can be readily prepared by reacting a homopolymer of N-vinylimidazole or a copolymer of N-vinylimidazole and a vinylic monomer such as styrene, methyl methacrylate, and N-vinylpyrrolidone with a benzyl halide in a solvent such as dimethylformamide, dioxane, or ethanol. |
 | | Alternatively, the layer of the polymer mordant need not be formed preliminarily on the support and a solution of the polymer mordant can be applied on the surface of the support simultaneously when a liquid processing composition is spread thereover at development. |
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