Patent ID: 6514930
Filing Date: 2003-02-04
Classification: C11D

Abstract:
A process for the production of detergent particles, the process comprising feeding an acid precursor of an anionic surfactant, a neutralising agent and aluminosilicate detergency builder into a horizontal thin-film evaporator/drier comprising a mixing region, a drying region and a cooling region, to effect neutralisation of the acid precursor, granulation, drying and cooling, to form the said detergent particles, wherein at least some of the aluminosilicate builder is fed into the thin-film evaporator/drier between the drying region and the cooling region and/or into the cooling region, provided that when all of the aluminosilicate builder is fed into the cooling region, the aluminosilicate is in an amount of more than 20% by weight of the particles exiting the cooling region.