| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a highly dense granular detergent, capable of producing the detergent having a high granule strength, having excellent flowability and caking resistance, and useful for washing clothes by subjecting the particles of a specific surfactant mixture to a compact molding method or a rolling granulation method at a specific temperature. SOLUTION: This highly dense granular detergent is obtained by spraying and drying an aqueous mixture comprising (A) a non-soap anionic surfactant, (B) a polyoxyethylene higher fatty acid monoethanolamide surfactant of the formula [R is a 7-19C (un)saturated hydrocarbon group; EO is oxyethylene; (n) is an average EO addition mole number of 0.5-3], and (C) an inorganic component such as amorphous sodium silicate, and subsequently subjecting the obtained dry particles to a compact molding method and subsequently to a crushing granulation method or to a rolling granulation method at a higher temperature by >=5 deg.C than the melting point of the component B. the components A, B and C are compounded at a B/A weight ratio of 0.05-1 and at a (A+B)/C weight ratio of 0.2-1 in the aqueous mixture, and the granulation is carried out so as to give an average granule diameter of 200-1000μm.
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