Patent ID: 6156719
Filing Date: 2000-12-05
Classification: C11D

Abstract:
A non-tower process for preparing a granular detergent composition having a density from about 300 g/l to about 550 g/l, comprising the steps of:(a) (i) dispersing an aqueous or non-aqueous surfactant, and (ii) coating the surfactant with fine powders having a diameter from 0.1 to 500 microns, in a mixer to obtain irregular-shaped granules, wherein conditions of the mixer include (1) from about 5 to about 15 seconds of mean residence time, (2) from about 5 to about 10 m/s of tip speed, (3) from about 0.15 to about 4.2 kj/kg of energy condition;(b) spraying finely atomized liquid onto the irregular-shaped granules and excessive fine powders from step (a), in a second mixer to bind the excessive fine powders on the irregular-shaped granules, wherein conditions of the mixer include (1) from about 0.2 to about 5 seconds of mean residence time, (2) from 13 to about 23 m/s of tip speed, (3) from about 0.15 to about 2.9 kj/kg of energy condition.