abstract |
New betaines of formula (I) are proposed in the R 1 CO for a saturated and / or unsaturated, ethoxylated hydroxyacyl radical with 16 to 22 carbon atoms and 1 to 50 oxyethylene units, A for a linear or branched alkylene radical with 1 to 6 carbon atoms, R 2 , R 3 and R 4 independently from each other is hydrogen or an alkyl group having 1 to 4 carbon atoms, n is a number from 1 to 3 and X is hydrogen, an alkali or alkaline earth metal or ammonium. |