Use of olefinic imines to scavenge sulfur species

Details Use of olefinic imines to scavenge sulfur species Use of olefinic imines to scavenge sulfur species

C - Chemistry, Metallurgy

10

G

C10G 29/20 (2006.01) C09K 8/532 (2006.01) C10L 1/228 (2006.01)

Patent

CA 2170698

A method for scavenging sulfur species from a petroleum-derived medium is disclosed. The method comprises contacting the medium with sulfur species scavenging amount of an imine of the formula Image wherein x is an integer from 1 to 10, R' is an organic moiety having a number of valences equal to x, R1 is hydrogen or a mono-valent organic moieties and R is a mono-valent olefin moiety, provided that R and R1 contain a total of from about four to about forty carbon atoms. In an alternative embodiment, the imine is produced by a condensation reaction between an amine having at least one primary amino group and a carbonyl of the formula Image , wherein R1 is hydrogen or a mono-valent organic moieties and R is a mono-valent olefin moiety, provided that R and R1 contain a total of from about four to about forty carbon atoms. In yet other embodiments, the imine is produced by a condensation reaction between an amine having at least one primary amino group and an aldehyde having at least one alpha-hydrogen in an aldehyde to primary amino group molar ratio of at least about 2:1, are also disclosed.

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