Process for the manufacture of free-flowing detergent granules

Abstract

A process for the manufacture of free flowing detergent granules having a bulk density of at least 600 g/l, comprises the steps of: a) neutralising anionic surfactant acid or acids in an excess of alkali to form a paste, and optionally mixing other surfactants with the paste, to give a total surfactant level in the paste of at least 40% by weight; b) mixing said paste with one or more powders to form a granular product; and c) optionally drying the granular product, wherein at least one of the powders in step b) is spray dried and comprises anionic polymer and cationic surfactant.

Dependencies are inferred from the claim text.