Patent ID: 7053038
Filing Date: 2006-05-30
Classification: C11D

Abstract:
1. A low shear mechanical granulation process for the production of detergent granules of a low bulk density in the range of 300 to 650 g/l, the process comprising contacting in a low shear granulation apparatus comprising a gas fluidization granulator an acid precursor of an anionic surfactant, a non-surfactant acid and a solid carbonated neutralizing agent wherein the solid carbonated neutralizing agent has a d 3,2 average particle size of at least 10 μm and no more than 90 μm, wherein the amount of the non-surfactant acid is at least 60% by weight of the total of the acid precursor of an anionic surfactant and the non-surfactant acid, and wherein a stoichiometric excess of solid carbonated neutralizing agent is used, relative to the amount of anionic acid precursor plus non-surfactant acid.