Kao Corporation

Tatsuki Matsumoto

Toku Fujioka

Hisashi Goda

Yoshihiro Hasebe

Hideyuki Hanazawa

Zenbei Meiwa

Ritsuko Yamazaki

Tatsuya Horibata

Misako Morioka

Mamoru Nakamura

The present invention relates to [1] a detergent composition including pigment granules containing (A) from 10 to 95% by mass of a water-insoluble pigment, and (B) at least two compounds selected from the group consisting of polyvinyl alcohol, a polyvinyl alcohol derivative, polyvinyl pyrrolidone and a polyvinyl pyrrolidone derivative; and [2] a process for producing the detergent composition according to the above [1], including the steps of mixing and granulating a powder containing the water-insoluble pigment (A) and a solution of the component (B) to obtain a granulated product; drying the resulting granulated product to obtain the pigment granules; and mixing the pigment granules with a detergent. The detergent composition is capable of not only can satisfying both of rich foaming and good preparation stability, but also exhibiting sufficient coloration of foams and readily controlling a coloring time of the foams without damage to motivation of the user to use the detergent, and therefore can provide a comfortable feeling of use and a suitable configuration of use according to the applications by the user.

Detergent composition comprising polyvinyl alcohol-containing pigment granules

Disclosed is the method for producing an anionic surfactant powder, including removing impurities by introducing gas into a crude anionic surfactant containing water in a content of 0.01 to 5% by weight in a granulator or drier, having an agitating blade. Also disclosed is the method for producing an anionic surfactant powder, including introducing a gas along with the surface of an inner wall of a granulator or drier having an agitating blade at a reduced pressure to produce the anionic surfactant powder.

Method for producing anionic surfactant

Disclosed is a method for producing an anionic surfactant powder, which comprises a step wherein an aqueous anionic surfactant solution having an anionic surfactant concentration of 0.01-40% by weight is introduced into a granulating machine or a drying machine having a mixing blade under a reduced pressure for granulation and drying.

Method for producing anion surfactant granules

The present invention relates to a method for producing an anionic surfactant granule, which includes granulating an anionic surfactant powder in a granulator having an agitating blade, while adding water, at a temperature of the granule being higher by 0.5 to 30&#xb0; C. than a boiling point of water under a pressure of the inside of the granulator.

Method for producing anionic surfactant granule

The invention relates to disintegrating particles formed by agglomerating primary particles at least part of which are insoluble in water, wherein the agglomeration of the disintegrating particles is disintegrated in an aqueous solution containing a water-soluble salt by lowering the concentration of the water-soluble salt. The invention also relates to a cleanser or detergent composition that includes the disintegrating particles, a water-soluble salt at a concentration lower than its saturated solubility, a surfactant and water. The composition has excellent physical (mechanical) cleanability and stability with time and gives users a pleasant feeling upon use. The composition does not cause damage to and itch on the skin because the disintegrating particles are disintegrated during cleansing and rinsing, and it is extremely good in rinsability.

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Wakayama, Japan

Tatsuki Matsumoto