Lion Corporation

Kenji Morimura

Kensuke Itakura

Takashi Kobayashi

Hideaki Watanabe

Masashi Hara

Masahiko Matsubara

Daisuke Negishi

Yohei Nogami

Yuki Nishiyama

Yoichi Ebashi

A coated &#x3b1;-sulfofatty acid alkyl ester salt particle group containing &#x3b1;-sulfofatty acid alkyl ester salt particles (A) and a zeolite particle group-containing coating component (B) with which the particles (A) are coated, in which the zeolite particle group is a zeolite particle group (b1) having a mean particle size of equal to or greater than 0.8 &#x3bc;m and less than 3.8 &#x3bc;m.

Coated [alpha]-sulfofatty acid alkyl ester salt particle group, method for producing same, and powder detergent

The invention provides a fatty acid alkyl ester sulfonate metal salt mixture of (a) a fatty acid alkyl ester sulfonate metal salt having an endothermic peak area at 50 to 130&#xb0; C. of less than 50% relative to the whole endothermic peak area at 0 to 130&#xb0; C. as measured on a differential scanning calorimeter, and (b) a fatty acid alkyl ester sulfonate metal salt having an endothermic peak area at 50 to 130&#xb0; C. of 50% or more relative to the whole endothermic peak area at 0 to 130&#xb0; C. as measured on a differential scanning calorimeter, with a ratio of (a) to (b) by mass of 95/5 or less. The mixture of the invention is excellent in anti-caking properties.

Fatty acid alkyl ester sulfonate metal salt powder mixture and method for producing the same

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Tokyo, Japan

Kenji Morimura