Importance

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Abstract

Cleansing compositions include a mixture of alkyl ether carboxylic acids and/or salts thereof, each having a structure according to formula (1):

description='In-line Formulae' end='lead'R¹—O—(CH₂CH₂O)_n—CH₂—COOM  (1)description='In-line Formulae' end='tail'

where R¹ is an alkyl group having 4 to 22 carbon atoms, n is a number of from 0 to 20, and M is a hydrogen atom, alkali metal, alkaline earth metal, ammonium, or organic ammonium. The mixture includes alkyl ether carboxylic acids and/or salts having at least two different alkyl groups R¹, an average carbon number of alkyl groups R¹ of alkyl ether carboxylic acids and/or salts in the mixture is from 10.8 to 12.5, the mixture includes alkyl ether carboxylic acids and/or salts in which n=0 in an amount of from 8 to 27% by weight based on a total weight of the mixture, the mixture includes alkyl ether carboxylic acids and/or salts in which n=1 and alkyl ether carboxylic acids and/or salts in which n=2 in an amount of from 28 to 38% by weight based on the total weight of the mixture, and the mixture includes alkyl ether carboxylic acids and/or salts in which n≦6 in an amount of at least 10% by weight based on the total weight of the mixture.

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First Claim