Phosphorylated and thiophosphorylated poly(oxyalkylated) hydrazi

Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant

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252 785, 252148, 252149, 252156, 25217416, 252392, 252541, 252545, 252389R, 260923, C23G 106, C23G 118, C07F 902

Patent

active

044380135

ABSTRACT:
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.

REFERENCES:
patent: 2878189 (1959-03-01), Certa
patent: 3108959 (1963-10-01), Klass et al.
patent: 4308263 (1981-12-01), Oediger et al.
patent: 4317741 (1982-03-01), Lederle et al.
patent: 4346184 (1982-08-01), Drake

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