Lion Corporation

Daisuke Negishi

Masahiko Matsubara

Naoki Nakamura

Yutaka Abe

Kensuke Itakura

Nobukazu Shogase

Hiroyuki Masui

Kenji Morimura

Takao Matsuo

Toru Yoshii

Yuki Nishiyama

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

A solid fatty acid alkyl ester sulfonate metal salt is disclosed having an endothermic peak area between 50&#xb0; C. and 130&#xb0; C. of 50% or more relative to the whole endothermic peak area between 0&#xb0; C. and 130&#xb0; C. when determined using a differential scanning calorimter. A method for producing a fatty acid alkyl ester sulfonate metal salt powder is also disclosed, including a step of pulverizing the solid fatty acid alkyl ester sulfonate metal salt in a pulverizer, with the internal temperature of the pulverizer being adjusted to 30&#xb0; C. to 50&#xb0; C.

Solid fatty alkyl ester sulfonate metal salt and method for producing powder thereof with sharp particle size distribution

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Tokyo, Japan

Daisuke Negishi