Birch, Stewart, Kolasch & Birch, LLP
Method for producing single nucleus detergent particles
The present invention relates to a process for preparing uni-core detergent particles having a degree of particle growth of 1.5 or less and a bulk density of 500 g/L or more, comprising the steps of (A-I) mixing base particles for supporting a surfactant which have an average particle size of from 150 to 500 &mgr;m and a bulk density of 400 g/L or more [Component (a)] with a surfactant composition [Component (c)]; (A-II) mixing a mixture obtained in Step (A-I) with a powdery builder [Component (b)] of which primary average particle size is from 3 to 30 &mgr;m; and (A-III) mixing a mixture obtained in Step (A-II) with a fine powder [Component (d)] of which primary average particle size is smaller than that of Component (b). By using the process of the present invention, the uni-core detergent particles which are excellent in the dissolubility and the flowability properties can be prepared.
Kao Corporation
C C
C11D C11D
inventional inventional
Hiroyuki Teruo Hitoshi Motomitsu
Yamashita Kubota Takaya Hasumi