Patent ID: 6124250
Filing Date: 2000-09-26
Classification: C11D

Abstract:
A homogeneous, highly alkaline, solid cleansing composition, produced by a process comprising the steps of:(a) mixing by wet grinding or milling of a solid hydratable alkaline material comprising alkali metal hyroxide and an aqueous alkaline medium in a mixing system at a shear effective to reduce the solid alkaline material to a particle size effective to form a solid alkaline matrix by hydration of the alkaline material thereby increasing the rate of solidification and reducing swelling of the final product, and at a temperature below the melting point of the solid alkaline matrix, the total alkali metal hydroxide content of the solid alkaline matrix being about 80-90%; and(b) removing shear and discharging the alkaline matrix from the mixing system, causing the alkaline matrix to harden to a solid composition.