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US 11,981,625 B2Granted
Sulfide-based compounds and uses thereof
AssigneeEcolab USA Inc.
InventorsJeremy Moloney, Ashish Dhawan, Carter Silvernail
Life of this patent
Estimating the term…
Abstract
Disclosed are sulfide-based compounds which are a product of a Michael addition reaction between a sulfur-containing donor group and an unsaturated hydrocarbon moiety. The sulfide-based compounds may be used in compositions and methods for inhibiting corrosion.
Claims16
A method of inhibiting corrosion of metal containments in contact with a fluid source comprising the steps of:
- introducing into the fluid source a composition comprising at least one sulfide-based compound, the at least one sulfide-based compound formed by a Michael addition reaction between a sulfa Michael donor, wherein sulfa-Michael donor comprises a mercaptoalcohol, and an olefin Michael acceptor comprising one or more nitrogen, sulfur, phosphorus, or halo atoms,
- wherein the olefin Michael acceptor with one or more nitrogen atoms comprises one or more of an ammonium group, an aminium group, an enamine group, a ketimine group, an aldimine group, an oxazolidine group, a maleimide group, a pyridine, an azo group, or a nitro group;
- or
- wherein the olefin Michael acceptor with one or more sulfur or phosphorus atoms comprises one or more of a sulfonate group, a sulfonic acid group, a sulfonyl group, a phosphonate group, or a phosphonic acid group.
1 more element
A method of inhibiting corrosion of metal containments in contact with a fluid source comprising the steps of:
- introducing into the fluid source a composition comprising at least one sulfide-based compound of the formula:
- wherein:
- R1 is H or CH3;
- R2 is H, CH3, or an unsubstituted, linear or branched C2-C30 alkyl, alkenyl, or alkynyl group;
- EWG comprises an electron withdrawing group comprising one or more nitrogen, sulfur, phosphorus, or halo atoms,
- wherein the EWG with one or more nitrogen atoms comprises one or more of an ammonium group, an aminium group, an enamine group, a ketimine group, an aldimine group, an oxazolidine group, a maleimide group, a pyridine, an azo group, or a nitro group;
- or
- wherein the EWG with one or more sulfur or phosphorus atoms comprises one or more of a sulfonate group, a sulfonic acid group, a sulfonyl group, a phosphonate group, or a phosphonic acid group;
- and
- wherein R is R—(OH)m or wherein R further comprises one or more acid group(s), where R is a straight, branched, cyclic or heterocyclic alkylene, arylene, alkylarylene, arylalkylene, or hydrocarbon moiety having an amount of carbon atoms in the range of 1 to 30, and m is an integer in the range of 1 to 3.
7 more elements
A method of inhibiting corrosion of metal containments in contact with a fluid source comprising the steps of:
- introducing into the fluid source a composition comprising at least one sulfide-based compound of the formula:
- wherein:
- R1 is H or CH3;
- R2 is H, CH3, or an unsubstituted, linear or branched C2-C30 alkyl, alkenyl, or alkynyl group;
- EWG comprises an electron withdrawing group comprising one or more nitrogen, sulfur, phosphorus, or halo atoms,
- wherein the EWG with one or more nitrogen atoms comprises one or more of an ammonium group, an aminium group, an enamine group, a ketimine group, an aldimine group, an oxazolidine group, a maleimide group, a cyano group, a pyridine, an azo group, or a nitro group;
- or
- wherein the EWG with one or more sulfur or phosphorus atoms comprises one or more of a sulfonate group, a sulfonic acid group, a sulfonyl group, a phosphonate group, or a phosphonic acid group;
- and
- wherein R is a straight, branched, cyclic or heterocyclic alkylene, arylene, alkylarylene, or arylalkylene group having a number of carbon atoms in the range of 2-30, and comprising one or more acid group(s) or hydroxyl group(s).
7 more elements
Dependencies are inferred from the claim text.