Carbon dioxide steel corrosion inhibition with synergetic, environmental friendly composition of N-acyl sarcosines and N-alkyl-amidopropylbetaines

摘要

The compsn. of aqueous soln. consisting of a hydrosoluble salt of N-alcoyl-sarcosine and N-alkyl-amido-propylbetaine with formula (I) or (II) (where R and R' = 9 - 19 C (un)saturated hydrocarbon; and Z+ = inorganic cation or organic monovalent) for inhibiting carbonic acid corrosion to steel is claimed. The ratio of N-alcoyl-sarcosine to N-alkyl-amido-propylbetaine is 1:3-3:1. The compsn. content in active component, soluble salt of N-alcoyl-sarcosine and of N-alkyl-amido-propylbetaine is 20-30 wt.%.