Exxon Chemical Patents, Inc.

Paul J Clewlow

Niall Carruthers

Daniel S Sullivan, Iii

John A Haslegrave

Terence M O'Brien

Brent I Bourland

Dennis A Williams

James R Looney

John A Haselgrave

Amines which are compounds of the formula I: ##STR1## where R is a C.sub.6-20 hydrocarbon;

Amine adducts as corrosion inhibitors

A method of acidizing a subterranean formation with an acqueous acid solution wherein the acid solution contains corrosion inhibiting amounts of an amine derivative prepared by reacting an unsaturated carboxylic acid with (a) fatty amine or polyamine, or (b) a fatty amido amine or polyamine, or (c) a fatty imidazoline amine or polyamine. The derivative is characterized by the absence of primary amino groups, and preferably contains only tertiary amino groups.

Amine derivatives as corrosion inhibitors

Amine derivatives which are compounds of the formula (I): ##STR1## in which R is a C.sub.6-20 hydrocarbon; Y is --CO--NH-- and n is an integer of 1 to 6; or ##STR2## in which X is an alkylene group of 2 to 6 carbon atoms and n is an integer of 0 to 6;

Corrosion inhibitors

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Faringdon, United Kingdom

Paul J Clewlow