an amphoteric surfactant concentrated aqueous solution, particularly betaine, and method for preparation thereof

摘要

Dissolving concentrated aqueous amphoteric surfactant with a lower or equal viscosity to 3000 cps, preferably less than or equal to 1,000 cps, as measured with a model viscometer LV Brookfield at 20 ° C, 20 rpm, spindle 3, characterized in that it comprises urea at a concentration from 0.01% to 5% by weight of the total weight of the solution and further characterized in that the concentration of the amphoteric surfactant is between 25% and 60% by weight.