Patent ID: 6355606
Filing Date: 2002-03-12
Classification: C11D

Abstract:
A process for preparing a low density detergent composition characterized by the steps of:(a) agglomerating a detergent surfactant paste or precursor thereof and dry starting detergent material in a first high speed mixer to obtain agglomerates; (b) mixing said detergent agglomerates in a second high speed mixer to obtain built-up agglomerates; and (c) feeding said built-up agglomerates and a binder into a fluid bed dryer to form low density detergent agglomerates having a density in a range from about 300 g/l to about 550 g/l, said fluid bed dryer being operated at a Stokes Number of less than 1, wherein Stokes Number=8&rgr;&ngr;d/9&mgr;â€ƒ&rgr; is the apparent particle density of said built-up agglomerates, &ngr; is the excess velocity of said built-up agglomerates, d is the mean particle diameter of said built-up agglomerates and &mgr; is the viscosity of said binder.