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US 4,154,948 AGranted
Phosphonium compounds
AssigneePetrolite Corporation
InventorDerek Redmore
Life of this patent
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Abstract
Phosphonium compounds of the formula ##STR1## where y is --CH.sub.2 OH or --CH.sub.2 OOCCH.sub.2 PR.sub.3, n is an integer of 2-4, R is a substituted group, preferably hydrocarbon, such as alkyl, cycloalkyl, aryl, etc., and X is a negative ion. These compounds are used in inhibiting the corrosion of metals and particularly in preventing corrosion of metals, particularly iron, steel and ferrous alloys.
Claims4
A phosphonium acetic acid ester of pentaerythritol of the formula ##STR37## where Y is --CH.sub.2 OH or ##STR38## n is an integer of 2-4, R is an aryl radical selected from the group consisting of
- phenyl, naphthyl, anthracyl and diphenyl radicals, and
- X is halogen, sulfate, phosphate, sulfonate, phosphonate, acetate, oxalate, benzoate, maleate, oleate, perchlorate or picrate.
Dependencies are inferred from the claim text.