| 摘要 |
The powder detergent having a high apparent density and good flowabilities was prepared by densification of beads detergent using nonionic surfactant, and addition of soda ash having 0.8 g/cm3- 1.2 g/cm3 of apparent density, 200- 650um of mean particle diameter, distribution of 20 wt.% less than 140um in afterblending. The crushed beads powder detergent having 0.2- 0.4 g/cm3 of apparent density, obtained by counter-current spraying drier, was coagulated by spraying 1- 10 wt.% of nonionic surfactant as a binder, followed by coating 1- 30 wt.% of fluid supplement agents such as powder zeolite, talc, clay, silica as a coating material, by compounding 5- 50 wt.% of flowabilities improver.
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