Tall oil amide for inhibiting corrosion

Claim 1

A COMPOUND FROM THE CLASS CONSISTING OF ORGANIC POLYCARBOXY ACID AMIDES AND ORGANIC POLYCARBOXY ACID SALTS OF AN ORGANIC MONOCARBOXY ACID AMIDE OF AN ALIPHATIC POLYALKYLENE POLYAMINE CONTAINING AT LEAST TWO PRRMARY AMINO GROUPS AND AT LEAST ONE SECONDARY AMINO GROUP INTERCONNECTED BY TWO TO THREE CARBON ATOMS IN A LINEAR CHAIN, AT LEAST ONE OF SAID PRIMARY AND SECONDARY AMINO GROUPS, BEING AMIDFIED BY A CARBOXYL GROUP OF SAID MONOCARBOXYL ACID AND AT LEAST ONE OF SAID PRIMARY AND SECONDARY AMINO GROUPS BEING REACTED TO FORM A CHEMICAL GROUP FROM THE CLASS CONSISTING OF AMIDE AND AMINE SALT GROUPS WITH ONE OF THE CRBOXYL GROUPS OF SAID ORGANIC POLYCARBOXY ACID, SAID COMPOUND CONTAINING AT LEAST ONE FREE CARBOXYL GROUP FROM SAID POLYCARBOXY ACID AND AT LEAST ONE BASIC AMINO GROUP FROM THE CLASS CONSISTING OF PRIMARY AND SECONDARY AMINO GROUPS, FROM SAID POLYAMINE, THE SAID ORGANIC MONOCARBOXY ACID CONTAINING AT LEAST EIGHT CARBON ATOMS, THE SAID ORGANIC POLYCARBOXY ACID BEING A POLYMER FATTY ACID AND CONTAINING IN EXCESS OF THIRTY-TWO CARBON ATOMS, WITH THE FURTHER PROVISO THAT THE MOLAR RATIO OF A PART OF THE PRIMARY AND SECONDARY AMINO NITROGEN OF SAID POLYAMINE TO THE CARBOXYL GROUPS, IN SAID MONOCARBOXYL ACID REACTED THEREWITH IS NOT GREATER THAN 5:1 AND NOT LESS THAN 2:1, AND THE MOLAR RATIO OT THE REMAINING PRIMARY AND SECONDARY AMINO NITROGEN OF SAID POLYAMINE TO THE CARBOXYL GROUPS OF SAID POLYCARBOXYL ACID IS NOT GREATER THAN 20:1 AND NOT LESS THAN 2:1.