Method for manufacturing dispersion of quinoline derivative
AssigneeCanon Kabushiki Kaisha
InventorsTakayuki Teshima, Kazumichi Nakahama, Akira Kuriyama
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Abstract
A method for manufacturing a dispersion of a quinoline derivative that is dispersed at a high concentration and has a small particle size. The method includes the steps of preparing a solution by dissolving an N-arylanthranilic acid derivative in an organosulfonic acid, heating the solution and obtaining a reaction liquid in which a quinoline derivative has been produced by a condensation ring-closing reaction, and obtaining a dispersion of the quinoline derivative by mixing the reaction liquid with an aqueous solution. The step of mixing the reaction liquid with an aqueous solution may be performed in a mixing field having a micro-channel.
Claims10
A method for manufacturing a dispersion of a quinacridone compound comprising the steps of:
- preparing a solution by dissolving an N-arylanthranilic acid in an organosulfonic acid;
- heating the solution and obtaining a reaction liquid in which a quinacridone compound has been produced by a condensation ring-closing reaction;
- ejecting the reaction liquid and an aqueous solution from flow channels whose openings to eject the reaction liquid and the aqueous solution are provided in an open space;
- and
- contacting the reaction liquid with the aqueous solution in the presence of a dispersant in the open space, such that a Reynolds number related to the space and liquid flows is more than 2000, to obtain the dispersion of the quinacridone compound.
A method for manufacturing a dispersion of a quinacridone compound comprising the steps of:
- preparing a solution by dissolving an N-arylanthranilic acid in an organosulfonic acid;
- heating the solution and obtaining a reaction liquid in which a quinacridone compound has been produced by a condensation ring-closing reaction;
- ejecting the reaction liquid and an aqueous alkaline solution from flow channels whose openings to eject the reaction liquid and the aqueous alkaline solution are provided in an open space;
- and
- contacting the reaction liquid with the aqueous alkaline solution in the open space, such that a Reynolds number related to the space and liquid flows is more than 2000, to obtain the dispersion of the quinacridone compound.
Dependencies are inferred from the claim text.