| abstract |
[Problem] To provide a method for producing an aqueous gold dispersion having excellent gold dispersion stability even when gold is contained at a high concentration, and to provide an ink jet recording ink having excellent dispersion stability and capable of reliably reproducing gold. To do. Kind Code: A1 A method for producing an aqueous gold dispersion having the following steps, and an ink for inkjet recording containing the aqueous gold dispersion. (1) An aqueous phase for reaction composed of an aqueous solution of chloroauric acid (HAuCl 4 ) and an organic phase composed of a hydrophobic organic solution of a tetraalkylammonium salt are mixed to transfer chloroauric acid to the organic phase. Process, (2) a step of adding a reducing agent, (3) a step of mixing an organic phase and a transfer aqueous phase comprising an aqueous solution containing a compound represented by the following general formula (I), and HS (CH 2) n -X ( I) (In the formula, X represents a hydrophilic group, and n is an integer of 1 to 12.) (4) Step of separating the aqueous phase for transfer and the organic phase [selection diagram] None |