Alkylbenzyl pyridinium compounds and uses
AssigneePetrolite Corporation
InventorPatrick M. Quinlan
Life of this patent
Estimating the term…
Abstract
Alkylbenzyl pyridinium compounds, for example of the general formula ##STR1## where R is a hydrocarbon group, preferably alkyl, occurring n times in the ring such as 1-3, but preferably 1 or 2; and R' is a hydrocarbon group, preferably alkyl, occurring m times, such as 1-3, but preferably 1, and X.sup.- is an anion, preferably halogen. These compositions are employed as corrosion inhibitors, preferably in acid systems. These are preferably employed as corrosion inhibitors with surfactants, and most preferably with surfactants and alcohols.
Claims14
An acid corrosion inhibiting composition comprising
- 1. substituted benzyl pyridinium compounds having the formula ##STR26## where ##STR27## is a pyridinium group, R' is an alkyl group occurring as a substituent m times, and m is 1 to 2, X is an anion, said benzyl pyridinium compounds being formed by reacting a mixture of alkyl pyridines with the compound of the formula ##STR28## and 2. an oxyalkylated surfactant or an alcohol.
The composition of claim 6 where the pyridinium compound is a dodecyl benzyl alkyl substituted pyridinium chloride, the oxyalkylated surfactant is a nonyl phenol condensed with 10 moles of ethylene oxide and the alcohol is isopropanol.
Dependencies are inferred from the claim text.