Kao Corporation

Kaoru Omae

Yasuhiro Doi

Yoshinori Tamura

Akira Matsunaga

Akira Sakaguchi

Masaki Inoue

Takeshi Shirasawa

Yasuo Amishige

The present invention provides a method for producing polyoxyalkylene alkyl ether carboxylic acid and a salt thereof, including supplying polyoxyalkylene alkyl ether, oxygen, and water to a continuous stirred tank reactor containing a noble metal catalyst to oxidize the polyoxyalkylene alkyl ether with oxygen, in which the molar ratio of the salt of polyoxyalkylene alkyl ether carboxylic acid to the polyoxyalkylene alkyl ether in the continuous stirred tank reactor is controlled to 0.33 to 49.

Method for producing polyoxyalkylene alkyl ether carboxylic acid and salt thereof

The present invention provides a thickening/foam-promoting agent having thickening/foam-promoting properties and a low odor, and a detergent composition containing the agent. The thickening/foam-promoting agent is composed of the following component (A): (A) a compound represented by the following formula (1):RO&#x2014;(PO)/(EO)&#x2014;R&#x2003;&#x2003;(1), wherein Ris a linear alkyl or an alkenyl group having 8 to 10 carbon atoms, PO is a propyleneoxy group, EO is an ethyleneoxy group, an average added molar number n is a number of 1.5 to 3.0, an average added molar number m is a number of 0 to 1.0, and Ris a hydrogen atom or a methyl group, wherein the content of an alcohol of the formula (1), when n=0, m=0 and Ris a hydrogen atom, is not more than 3000 ppm, and the detergent composition contains the component (A) and a surfactant (B).

Thickening/foam-promoting agent

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Wakayama, Japan

Kaoru Omae