| abstract |
An aqueous liquid solution of a betaine of the following general formula is disclosed <IMAGE> (I) in which R is an alkyl group of coconut fatty acids, preferably hydrogenated coconut fatty acids, or a fatty acid mixture which, on the average, corresponds to coconut fatty acids, wherein the solution has a solids content of at least 40% by weight, a pH of 5 to 8 and an aminoamide content of not more than 1% by weight, characterized by a content of 1 to 3% by weight, based on the solution, of one or more saturated fatty acids with, on the average, 8 to 18 carbon atoms or one or more unsaturated fatty acids with, on the average, 8 to 24 carbon atoms and 0 to 4% by weight of glycerin, based on the solution. |