MANUFACTURING METHOD OF GRANULAR ANIONIC SURFACTANT

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a granular anionic surfactant which is composed of grains in an optimum grain size range and has uniform composition over the entire grain size range. SOLUTION: The method for producing a granular anionic surfactant having an anionic surfactant content of 80 to 99.5% by weight comprising: (step 1) mixing an anionic surfactant with 1 to 50% by weight of a powder raw material other than the anionic surfactant in the presence of 4 to 15% by weight of water and (step 2) subjecting the mixture obtained in step 1 to simultaneous drying and granulation while adding an anionic surfactant paste to the mixture under reduced pressure. Also disclosed is a granular anionic surfactant obtained from the production method. COPYRIGHT: (C)2010,JPO&INPIT