Phosphorylated and thiophosphorylated poly(oxyalkylated) hydrazines and selected adducts and their use as corrosion inhibitors

摘要

Disclosed are compositions comprising the reaction products of poly(oxyalkylated) hydrazine and at least one compound selected from the group consisting of phosphorylation agents, thiophosphorylation agents, and mixtures thereof; wherein the poly(oxyalkylated) hydrazine has the formula: ##STR1## wherein each R is individually selected from hydrogen, lower alkyl groups having 1 to 4 carbon atoms, phenyl and mixtures thereof; the sum of w, x, y and z is from about 4 to about 25, and wherein the mole ratio of said poly(oxyalkylated) hydrazine to said compound being from about 0.1:1 to about 10:1. These compositions are shown to be effective corrosion inhibitors in corrosive aqueous solutions such as brines and acid metal-treating baths.