Thermally labile rust inhibitors

C - Chemistry – Metallurgy – 10 – L

Patent

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Details

44/13, 260/486.6

C10L 10/04 (2006.01) C10L 1/14 (2006.01) C10L 1/222 (2006.01) C10M 145/38 (2006.01) C10L 1/18 (2006.01) C10L 1/22 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1074811

ABSTRACT OF THE DISCLOSURE A new class of thermally labile compounds having rust inhibiting properties is disclosed and claimed. These compounds are alkylammonium carboxylate salt-ethoxylated alkyl phenyl ester derivatives of a dicarboxylic acid as represented by the formula Image wherein R is a tertiary alkyl group having from 4 to 30 carbon atoms, n = 1 to 12 and R3 = C4H9 to C12H25. The compounds (or formulations thereof) are especially useful as rust inhibi- tors when used either alone or in additive formulations in gasoline or other oil compositions to provide rust protection in fuel distribution systems which operate at ambient temperature (e.g., pipelines, tank trucks, and storage tanks). Preferred embodiments of the invention are products as described above in which the alkylammonium moiety has either 12 to 14 carbon atoms or 18 to 22 carbon atoms, and R3 is C8H17. The additive is used in hydrocarbon fuel compositions at a treating level of from 5 to 1000 ppm.

251561

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