| 摘要 |
A process for drying a surfactant to form a granule having 50 to 90 wt% non soap anionic surfactant and 5 to 25% hydrated inorganic hydratable salts, comprises <SL> <LI>(i) mixing an aqueous surfactant blend (I) containing from 20 to 50 wt% water and one or more inorganic hydratable salts (II) to form a mixture having a maximum viscosity of 100 Pa.s, at a shear rate of 20 s<-1> and a temperature of 80{C, where the ratio of I:II is greater than 1:1 and less than 10:1, <LI>(ii) drying the mixture by applying heat to produce an intermediate material with a total water content of 4 to 15 wt%. <LI>(iii) processing this intermediate material to form a free flowing granular detergent component. </SL> Use of the inorganic hydratable salt reduces the heat needed for the drying step. Also disclosed is a free flowing granular detergent material. |
