Water → Sodium Behenate

87.6 g of behenic acid (“Edenor C22-85R” manufactured by HENKEL Ltd.), 423 ml of distilled water, 49.2 ml of a 5N NaOH aqueous solution and 120 ml of t-butanol were mixed and reacted at 75° C. for 1 hour while stirring, to provide a sodium behenate solution. 206.2 ml of a silver nitrate aqueous solution (pH 4.0) comprising 40.4 g of silver nitrate was prepared and kept at 10° C. Then, the whole amount of the sodium behenate solution and the whole amount of the silver nitrate aqueous solution were added to a mixture of 635 ml of distilled water and 30 ml of t-butanol at 30° C. while stirring at a constant flow rate over 62 minutes and 10 seconds and 60 minutes, respectively. At that time, only the silver nitrate aqueous solution was added over 7 minutes and 20 seconds, both of the sodium behenate solution and the silver nitrate aqueous solution were added over 52 minutes and 40 seconds thereafter, and then, only the sodium behenate solution was added over 9 minutes and 30 seconds. Temperature of the mixture was maintained at approximately 30° C. by controlling the outer temperature. Further, the pipes for adding the silver behenate solution were maintained with respect to the temperature by a steam tracing, and the temperature of the silver behenate solution to be added was maintained at 75° C. by controlling opening of a nozzle for the steam. The pipes for adding the silver nitrate aqueous solution were maintained with respect to the temperature by circulating cold water at the outer side of double pipes. The pipes for the silver behenate solution and the pipes for the silver nitrate aqueous solution were symmetrically provided centering around a stirring shaft such that they did not come into contact with the reaction mixture.

1. customreacted at 75° C. for 1 hour

ORD record

ord-90ac371f98254d60abf05620938448c5

Source dataset

uspto-grants-2004_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06828070B2