Acid corrosion inhibiting compositions

Claim 1

A METAL CORROSION INHIBITING COMPOSITION COMPRISING THE PRODUCT OBTAINED BY REACTING AT A TEMPERATURE BETWEEN 65*C. AND 200*C. FROM 0.7 TO 0.3 MOLE OF A MERCAPTO COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOL ACETIC ACID, MERCAPTO SUCCINIC ACID, TOLUENE THIOL, AND O-MERCAPTO-BENZOIC ACID, WITH CORRESPONDINGLY FROM 0.3 TO 0.7 MOLE OF AN ORGANIC NITROGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 2-ALKYL-PYRIDINE, THE ALKYL GROUP OF WHICH CONTAINS FROM 4 TO 12 CARBON ATOMS, AN O-ALKYL-ANILINE THE ALLKYL GROUP OF WHICH CONTAINS FROM 1 TO 6 CARBON ATOMS, A POLYETHYLENE POLYAMINE, A N-ALKYL, TRIMETHYLENE-DIAMINE IN WHICH THE ALKYL GROUP IS DERIVED FROM A FATTY ACID, AND AN IMIDAZOLINE SUBSTITUTED IN THE NUMBER ONE POSITION WITH AN ALIPHATIC GROUP CONTAINING A RADICAL SELECTED FROM THE CLASS CONSISTING OF HYDROXYAMINO AND IMINO AND SUBSTITUTED IN THE NUMBER TWO POSITION WITH A C12-C22 HYDROCARBON GROUP SELECTED FROM THE CLASS CONSISTING OF ALKYL AND ALKENYL.