Kao Corporation

Yoichi Sugiyama

Hiroyuki Yamashita

Shu Yamaguchi

Hitoshi Takaya

Toshiharu Noguchi

Hiroshi Kitagaito

Shuji Takana

Hiroki Yamaboshi

Sachiko Yoshioka

The present invention relates to [1] alkali agent-containing particles which are free from deterioration of dissolvability in water and excellent in anti-caking property and which include (a) particles containing an alkali agent and having an average particle size of from 150 to 1000 &#x3bc;m, and a layer of (b) clay mineral particles exhibiting a water impregnation capacity of 200% by mass or more and having an average particle size of from 1 to 200 &#x3bc;m, the layer being formed on a surface of the respective particles (a); and [2] a method for suppressing caking of the alkali agent-containing particles including the step of forming a layer of the clay mineral particles (b) on a surface of the respective particles (a).

Particles containing alkali

The present invention relates to particles for supporting a surfactant and a process for preparing the same. Further, the present invention relates to high-density detergent particles using the particles for supporting a surfactant, and a process for preparing the same. According to the present invention, there can be obtained particles for supporting a surfactant which are excellent in the supporting ability (supporting capacity/supporting strength) for the liquid surfactant composition, and particles for supporting a surfactant which are excellent in the absorption properties (supporting rate) for the liquid surfactant composition, by spray-drying a preparation liquid obtainable by a process comprising the steps of preparing a first preparation liquid comprising a solution or slurry comprising a water-soluble polymer and a water-soluble salt; and subjecting the first preparation liquid to a treatment of increasing a number of water-soluble salt particles, thereby preparing a second preparation liquid having an increased number of water-soluble salt particles, as compared to the number of water-soluble salt particles which are present in the first preparation liquid. Further, since the liquid surfactant composition is supported by the particles for supporting a surfactant, detergent particles which are excellent in detergent performance, quality and the like can be efficiently obtained.

Granules for carrying surfactant and method for producing the same

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Wakayama, Japan

Yoichi Sugiyama