Docosanoic Acid → Potassium Behenate

Participants

Reaction Conditions

Reaction Steps

Using the apparatus shown in FIG. 5, particulate organic silver salt 3-1 was prepared in the following manner. Into a tank (31) containing 83.5 g of behenic acid and 1583.5 g of pure water, while stirring at 85° C., 147.7 ml of 1.5N aqueous KOH solution was added over 5 min. and allowed to react further for 60 min. to obtain a potassium behenate solution. Finally, water was added to make the total amount to 2000 ml. To a tank (32), 2000 ml of aqueous solution containing 37.6 g of silver nitrate was fed and maintained at 10° C. In FIG. 5, the numeral 33 designates the mixing device shown in FIG. 1(a). To the mixing device (33), in which a supply tube and a discharge tube, each had an inside diameter of 4 mm, the foregoing potassium behenate solution and aqueous silver nitrate solution were supplied at a flow rate of 1500 ml/min and allowed to undergo nucleation. During the nucleation, the silver potential was continuously measured and after the variation thereof fell within 2 mV, 1500 ml of nucleus particles (or nucleus particles) was taken out and used in the subsequent stage. The variation of silver potential was 1.8 mV over the entire nucleation time. In FIG. 5, numerals 38 and 39 designate a flowmeter and a pump, respectively.

Provenance & Evidence