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1. WO2020159955 - UTILISATION DE COMPOSÉS CATIONIQUES À BASE DE SUCRE COMME INHIBITEURS DE CORROSION DANS UN RÉSEAU D'ALIMENTATION EN EAU

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A method of controlling corrosion on a surface in a water system comprising: providing a corrosion control composition or a use solution of the corrosion control

composition into a water system to generate a treated water system or onto a metal surface of the water system,

wherein the corrosion control composition comprises a cationic alkyl polyglycoside; and wherein the corrosion control composition reduces corrosion on the metal surface in the water system.

2. The method according to claim 1, wherein the cationic alkyl polyglycoside is a cationic alkyl polyglucosidecomprising one or more glucose units and at least one cationic alkyl group R-Y, wherein R is an alkyl group and Y is a cationic group, and wherein if the cationic alkyl polyglucoside comprises two or more glucose units they are connected by a glycosidic bond, a non-glycosidic bond, a linker or a combination thereof.

3. The method according to claim 2, wherein the cationic alkyl polyglucoside is one


wherein R is an alkyl group; R is attached to at least one, more than one, or all the OH groups; and at least one R group contains a cationic group Y.

4. The method according to any of claims 2-3, wherein R is a C1-C30 alkyl or C8-C24 alky.

5. The method according to any of claims 2-4, wherein the cationic group Y is– NR4R5R6(+), and R4, R5, and R6 are independently CH3, Y is–NR4R5R6(+), R4 and R5 are independently CH3, and R6 is a C2-C12 aromatic alkyl, Y is– NR4R5R6(+), R4 and R5 are independently CH3, and R6 is -CH2-C6H6, or Y is– NR4R5R6(+) and the counter ion for the cationic group Y is chloride, bromide, fluoride, iodide, acetate, aluminate, cyanate, cyanide, dihydrogen phosphate, dihydrogen phosphite, formate, hydrogen carbonate, hydrogen oxalate, hydrogen sulfate, hydroxide, nitrate, nitrite, thiocyanate, or a combination thereof.

6. The method according to any of claims 2-5, wherein the cationic alkyl polyglucoside comprises at least one cationic alkyl group R-Y.

7. The method according to any of claims 2-6, wherein the cationic alkyl polyglucoside further comprises one or more nonionic alkyl groups R3.

8. The method according to claim 7, wherein R3 is an unsubstituted, linear, and saturated C1-C20 alkylene group, R3 is a linear C8-C18 alkyl, alkenyl, or alkynyl group, or R3 is a branched C8-C20 alkyl, alkenyl, or alkynyl group.

9. The method according to any of claims 2-8, wherein the cationic alkyl polyglucoside is a single compound, or a mixture of two or more different alkyl polyglucosides, wherein the two or more different alkyl polyglucosides differ from each other by molecular weight, structure, net charge, or combination thereof.

10. The method according to any of claims 2-9, wherein the cationic alkyl polyglucoside has an average molecular weight of from about 200 to about 5,500 Da.

11. The method according to claim 2, wherein the cationic alkyl polyglucoside is


wherein n is 0-10, R1 is a C1-C30 alkyl, and R2 is a C1-C30 alkyl.

12. The method according to claim 26, wherein n is 0, 1 or 2.

13. The method according to any of claims 11-12, wherein R1 is a C6-C20 alkyl or C8-C18 alkyl.

14. The method according to any of claims 11-13, wherein R2 is a C6-C20 alkyl, or C8-C18 alkyl.

15. The method according to any of claims 11-14, wherein R2 and R1 are C8-C18 alkyls.

16. The method according to any of claims 2-15, wherein the cationic alkyl polyglucoside is soluble or dispersible in water or the corrosion control composition, and wherein the corrosion control composition further comprises one or more additional corrosion control composition agents comprising a carrier, wherein the carrier is water, an organic solvent, wherein the organic solvent is an alcohol, a hydrocarbon, a ketone, an ether, an alkylene glycol, a glycol ether, an amide, a nitrile, a sulfoxide, an ester, or any combination thereof, or a mixture thereof.

17. The method according to claim 16, the organic solvent is an alcohol, an alkylene glycol, an alkyleneglycol alkyl ether, or a combination thereof.

18. The method according to claim 16, wherein the organic solvent is methanol, ethanol, propanol, isopropanol, butanol, isobutanol, monoethyleneglycol, ethyleneglycol monobutyl ether, or a combination thereof.

19. The method according to claim 16, wherein the organic solvent is methanol, ethanol, propanol, isopropanol, butanol, 2-ethylhexanol, hexanol, octanol, decanol, 2-butoxyethanol, methylene glycol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, diethyleneglycol monomethyl ether, diethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol dibutyl ether, pentane, hexane, cyclohexane, methylcyclohexane, heptane, decane, dodecane, diesel, toluene, xylene, heavy aromatic naphtha, cyclohexanone, diisobutylketone, diethyl ether, propylene carbonate, N-methylpyrrolidinone, N,N-dimethylformamide, a mixture thereof with water, or any combination thereof

20. The method according to any of claims 2-19, wherein the corrosion control composition further comprises one or more of additional corrosion inhibitors comprising an imidazoline compound, a pyridinium compound, or a combination thereof, and/or a fouling control agent.

21. The method according to any of claims 1-20, wherein the corrosion control composition further comprises a biocide, wherein the biocide is chlorine, hypochlorite, ClO2, bromine, ozone, hydrogen peroxide, peracetic acid, peroxycarboxylic acid, peroxycarboxylic acid composition, peroxysulphate, glutaraldehyde,

dibromonitrilopropionamide, isothiazolone, terbutylazine, polymeric biguanide, methylene bisthiocyanate, tetrakis hydroxymethyl phosphonium sulphate, and any combination thereof, and/or a preservative.

22. The method according to any of claims 1-21, wherein the corrosion control composition further comprises an acid and wherein the corrosion control composition comprises from about 1 wt-% to about 20 wt-% of the acid, and wherein the acid is hydrochloric acid, hydrofluoric acid, citric acid, formic acid, acetic acid, or mixture thereof.

23. The method according to any of claims 1-22, wherein the corrosion control composition further comprises a hydrogen sulfide scavenger, and wherein the hydrogen sulfide scavenger is an oxidant, inorganic peroxide, sodium peroxide, chlorine dioxide; a C1-C10 aldehyde, formaldehyde, glyoxal, glutaraldehyde, acrolein, or methacrolein, a triazine, monoethanolamine triazine, monomethylamine triazine, or a mixture thereof.

24. The method according to any of claims 1-23, wherein the corrosion control composition further comprises a surfactant, and wherein the surfactant is a nonionic, semi-nonionic, cationic, anionic, amphoteric, zwitterionic, Gemini, di-cationic, di-anionic surfactant, or mixtures thereof.

25. The method according to claim 24, wherein the surfactant is an alkyl phenol, fatty acid, or mixture thereof.

26. The method according to any of claims 1-25, wherein the corrosion control composition further comprises an asphaltene inhibitor, a paraffin inhibitor, a scale inhibitor, a gas hydrate inhibitor, a pH modifier, an emulsion breaker, reverse emulsion breaker, coagulant/flocculant agent, an emulsifier, a water clarifier, a dispersant, antioxidant, polymer degradation prevention agent, permeability modifier, foaming agent, antifoaming agent, emulsifying agent, scavenger agent for CO2, and/or O2, gelling agent, lubricant, friction reducing agent, salt, or any combination thereof.

27. The method according to any of claims 1-26, wherein the corrosion control composition is a liquid, gel, or a mixture comprising liquid/gel and solid, and wherein the corrosion control composition or a use solution thereof has a pH of from about 2 to about 11.

28. The method according to any of claims 1-27, wherein the corrosion control composition comprises from about 20 wt-% to about 60 wt-% of the cationic alkyl polyglycoside or mixture thereof,wherein the cationic alkyl polyglycoside or mixture thereof has a concentration of from about 1 ppm to about 1000 ppm in the treated water system.

29. The method according to any of claims 16-28, wherein the cationic alkyl polyglycoside or mixture thereof is provided to the water system independently, simultaneously, or sequentially with one or more of the corrosion control composition agents.

30. The method according to any of claims 1-29, wherein the water system comprises fresh water, recycled water, salt water, surface water, produced water, or mixture thereof.

31. The method according to any of claims 1-30, wherein the water system is a cooling water system, boiler water system, petroleum wells, downhole formations, geothermal wells, mineral washing, flotation and benefaction, papermaking, gas scrubbers, air washers, continuous casting processes in the metallurgical industry, air conditioning and refrigeration, water reclamation, water purification, membrane filtration, food processing, clarifiers, municipal sewage treatment, municipal water treatment, or potable water system.

32. The method according to any of claims 1-31, wherein the water system is a surface that can be exposed to any water moisture.

33. A corrosion control composition comprising:

a cationic alkyl polyglycoside and one or more corrosion control composition agents, wherein the composition mitigates corrosion on a metal surface in a water system.