Detergent compositions and process for preparing them

Details Detergent compositions and process for preparing them Detergent compositions and process for preparing them

C - Chemistry, Metallurgy

11

D

134/3.7

C11D 11/00 (2006.01) C11D 1/83 (2006.01) C11D 17/06 (2006.01)

Patent

CA 2013088

In a process for preparing a granular detergent composition or component having a bulk density of at least 650 g/l, which comprises the steps of treating a particulate starting material (i) in a first step in a high-speed mixer/ densifier, the mean residence time being from about 5-30 seconds; (ii) in a second step in a moderate-speed granulator/densifier, whereby it is brought into, or maintained in, a deformable state, the mean residence time being from about 1-10 minutes and (iii) in a final step in drying and/or cooling apparatus, the amount of oversize particles can be effectively reduced by adding 0.1 to 40% by weight of a powder in the second step or between the first and the second step. Preferably, the deformable state is induced in the first step.

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