Use of cationic sugar-based compounds as corrosion inhibitors in a water system

Abstract

Described herein are the methods of using a cationic alkyl polyglycoside in a corrosion control composition to reduce corrosion for metal surfaces in a water system. The described methods or compositions are found to be effective than those methods or compositions including commonly used corrosion inhibitors for water systems.

1 - 22 . (canceled) 
     
     
         23 . 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.   
     
     
         24 . The composition according to  claim 23 , wherein the cationic alkyl polyglycoside is a cationic alkyl polyglucoside and comprises 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. 
     
     
         25 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside is one of 
       
         
           
           
               
               
           
         
       
       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. 
     
     
         26 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside comprises two or more glucose units and the glucose units are connected by glycosidic bond, a non-glycosidic bond, a linker, or a combination thereof. 
     
     
         27 . The composition according to  claim 25 , wherein R is a C 1 -C 30  alkyl or C 8 -C 24  alkyl, wherein Y is —NR 4 R 5 R 6(+) , and R 4 , R 5 , and R 6  are independently CH 3 , Y is —NR 4 R 5 R 6(+) , R 4  and R 5  are independently CH 3 , and R 6  is a C 2 -C 12  aromatic alkyl, Y is —NR 4 R 5 R 6(+) , R 4  and R 5  are independently CH 3 , and R 6  is —CH 2 —C 6 H 6 , or Y is —NR 4 R 5 R 6(+)  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. 
     
     
         28 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside comprises one cationic alkyl group R—Y, two cationic alkyl groups R—Y, or three or more cationic alkyl groups R—Y. 
     
     
         29 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside further comprises one or more nonionic alkyl groups R 3 , wherein R 3  is: an unsubstituted, linear, and saturated C 1 -C 20  alkylene group; an unsubstituted, linear, and unsaturated C 1 -C 20  alkylene group; a linear C 8 -C 18  alkyl, alkenyl, or alkynyl group; or a branched C 8 -C 20  alkyl, alkenyl, or alkynyl group. 
     
     
         30 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside is a single compound, or wherein the cationic alkyl polyglucoside is 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. 
     
     
         31 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside has an average molecular weight of from about 200 to about 5,500 Da. 
     
     
         32 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside is 
       
         
           
           
               
               
           
         
       
       wherein n is 0-10, R 1  is a C 1 -C 30  alkyl, and R 2  is a C 1 -C 30  alkyl. 
     
     
         33 . The composition according to  claim 24 , wherein the cationic alkyl polyglucoside is soluble or dispersible in water or the corrosion control composition. 
     
     
         34 . The composition according to  claim 23 , wherein the corrosion control composition agents is an organic acid, an inorganic acid, peroxycarboxylic acid, carrier, dispersant, biocide, additional corrosion inhibitor, fouling control agent, antioxidant, polymer degradation prevention agent, permeability modifier, foaming agent, antifoaming agent, fracturing proppant, scavenger for H 2 S, CO 2 , and/or O 2 , gelling agent, lubricant, friction reducing agent, preservative, salt, or mixtures thereof. 
     
     
         35 . The composition according to  claim 34 , wherein the carrier comprises from about 1 wt-% to about 80 wt-% of the composition and is water, an organic solvent, or a mixture thereof and wherein the biocide is an oxidizing or non-oxidizing biocide. 
     
     
         36 . The composition according to  claim 34 , wherein the additional corrosion inhibitor comprises from about 0.1 wt-% to about 20 wt-% of the composition and is an imidazoline compound, a pyridinium compound, or a combination thereof. 
     
     
         37 . The composition according to  claim 34 , wherein the fouling control agent comprises from about 0.1 wt-% to about 10 wt-% the composition and is a single quaternary compound. 
     
     
         38 . The composition according to  claim 34 , wherein the biocide comprises from about 0.1 to about 10 wt-% of the composition and is chlorine, hypochlorite, C 102 , bromine, ozone, hydrogen peroxide, peracetic acid, peroxycarboxylic acid, peroxycarboxylic acid composition, peroxysulphate, glutaraldehyde, dibromonitrilopropionamide, isothiazolone, terbutylazine, polymeric biguanide, methylene bisthiocyanate, tetrakis hydroxymethyl phosphonium sulphate, or any combination thereof. 
     
     
         39 . The composition according to  claim 23 , further comprising a preservative in an amount between about 0.1 wt-% and about 5 wt-% of the composition, and/or from about 0.1 wt-% to about 10 wt-% of a water clarifier that is an aluminum salt or an organic polymers selected from the group consisting of acrylic acid-based polymers, acrylamide-based polymers, polymerized amines, alkanolamines, thiocarbamates, and diallyldimethylammonium chloride (DADMAC). 
     
     
         40 . The composition according to  claim 34 , wherein the scavenger, and wherein the hydrogen sulfide scavenger comprises from about 1 wt-% to about 50 wt-% of the composition and is an oxidant, inorganic peroxide, sodium peroxide, chlorine dioxide; a C 1 -C 10  aldehyde, formaldehyde, glyoxal, glutaraldehyde, acrolein, or methacrolein, a triazine, monoethanolamine triazine, monomethylamine triazine, or a mixture thereof. 
     
     
         41 . The composition according to  claim 23 , further comprising from about 0.1 wt-% to about 10 wt-% of (a) a surfactant, wherein the surfactant is a nonionic, semi-nonionic, cationic, anionic, amphoteric, zwitterionic, Gemini, di-cationic, di-anionic surfactant, or mixtures thereof, or wherein the surfactant is an alkyl phenol, fatty acid, or mixture thereof; (b) an asphaltene inhibitor; (c) a paraffin inhibitor; and/or (d) a scale inhibitor. 
     
     
         42 . The composition according to  claim 23 , wherein the composition is a liquid, gel, or a mixture comprising liquid/gel and solid, and wherein the composition or a use solution thereof has a pH of from about 2 to about 11. 
     
     
         43 . The composition according to  claim 23 , wherein the cationic alkyl polyglucoside or mixture thereof is provided into a water system to generate a treated water system, and wherein the cationic alkyl polyglucoside or mixture thereof is provided into the water system independently, simultaneously, or sequentially with one or more of the corrosion control composition agents, and wherein the water system comprises fresh water, recycled water, salt water, surface water, produced water, or mixture thereof, or 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. 
     
     
         44 . The composition according to  claim 43 , wherein the corrosion control composition comprises from about 20 wt-% to about 60 wt-% of the cationic alkyl polyglycoside and/or wherein the cationic alkyl polyglycoside has a concentration of from about 1 ppm to about 1000 ppm in the treated water system.