An agricultural product may comprise an aqueous carrier phase, a neutral surfactant or a reaction product thereof, and a reaction product of a saccharide polymer and a fatty acid. The reaction product of the saccharide polymer may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant). The saccharide polymer comprises a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant and may be highly biodegradable as evaluated by OECD 301B. Compositions comprising the reaction product of the saccharide polymer and the fatty acid may be applied to an untreated soil to form a treated soil that absorbs water faster or to a greater extent than does the untreated soil.
A01N 25/30 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, caractérisés par leurs formes, ingrédients inactifs ou modes d'application; Substances réduisant les effets nocifs des ingrédients actifs vis-à-vis d'organismes autres que les animaux nuisibles caractérisés par les agents tensio-actifs
A01N 57/20 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés organiques du phosphore comportant des liaisons phosphore-carbone contenant des radicaux acycliques ou cycloaliphatiques
A carrier phase, a neutral surfactant or a reaction product thereof, and a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be formulated as consumer or industrial products of various types. The reaction product of the saccharide polymer may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant). The saccharide polymer comprises a dextran, a dextrin compound, or any combination thereof, and the fatty acid comprises about 50 wt. % or above of one or more straight-chain fatty acids. Illustrative products may include adjuvants, foaming agents, hard surface cleaners, skin creams and lotions, body washes, shampoos, liquid soaps, sunscreens, hair sprays and gels, cosmetics, deodorants, and antiperspirants.
Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. In addition, the compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.
Aqueous compositions comprising an aqueous carrier fluid, a reaction product of a saccharide polymer and a fatty acid or a fatty ester obtained in the aqueous carrier fluid in the presence of a hydroxide base and a neutral surfactant or a reaction product form thereof, a zwitterionic surfactant, and optionally an amine-functionalized saccharide polymer may facilitate dewatering of a plurality of particulates. The reaction product of the saccharide polymer and the fatty acid or the fatty ester, in combination with the neutral surfactant or the reaction product form thereof, and the zwitterionic surfactant may also promote increased aqueous fluid flow through the plurality of particulates. The amine-functionalized saccharide polymer may further increase dewatering of the plurality of particulates and improve clarity of an aqueous filtrate obtained from the plurality of particulates.
C08J 3/03 - Production de solutions, dispersions, latex ou gel par d'autres procédés que ceux utilisant les techniques de polymérisation en solution, en émulsion ou en suspension dans un milieux aqueux
6.
BRINE-TOLERANT COMPOSITIONS COMPRISING FATTY ACID OR FATTY ESTER REACTION PRODUCTS OF SACCHARIDE POLYMERS
Surfactant compositions comprising a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be obtained in an aqueous fluid in the presence of a hydroxide base and a neutral surfactant or a reaction product form thereof, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. One or more zwitterionic surfactants may be combined with the surfactant composition in a ratio sufficient to render the resulting combined surfactant composition brine-tolerant, even when both the reaction product and one or more of the zwitterionic surfactant(s) are brine-intolerant. The one or more zwitterionic surfactants may be further selected to render the combined surfactant composition non-emulsifying toward oleaginous fluids.
Compositions comprising a reaction product of a saccharide polymer and a fatty ester may be obtained in an aqueous phase in the presence of a hydroxide base and a neutral surfactant, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The compositions also comprise one or more alcohols originating from the fatty ester upon forming the reaction product of the saccharide polymer and the fatty ester. The reaction product of the saccharide polymer and the fatty ester may be present in the aqueous phase at a concentration effective to lower a surface tension of the neutral surfactant. The fatty ester may comprise one or more glycerol esters, such as one or more plant and/or animal oils and/or fats, and the one or more alcohols originating from the fatty ester may comprise glycerol. Fatty acids originating from the fatty ester may be substantially straight-chain fatty acids.
Fluid contaminants may be prevalent in many industries, such as the mining industry. Functionalized saccharide polymers comprising two or more monosaccharide units linked by glycosidic bonds and having a portion of the monosaccharide units oxidatively opened and functionalized with at least one aminocarboxylic acid covalently bound through nitrogen at a site of oxidative opening may be utilized in conjunction with fluid remediation processes, such as froth flotation. In non-limiting examples, the functionalized saccharide polymers may also be useful for promoting dust control, particulate coating, clay stabilization, and various subterranean treatment operations. Glycine represents one example of an aminocarboxylic acid that may be covalently bonded through nitrogen at a site of oxidative opening.
Aqueous compositions comprising a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be obtained in an aqueous fluid in the presence of a hydroxide base and a neutral surfactant or a reaction product form thereof, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. When further combined with a zwitterionic surfactant in a sufficient concentration, emulsifying compositions may be obtained. The emulsifying compositions may be contacted with an oleaginous substance to produce an emulsified fluid, which may define an oil-in-water emulsion.
Compositions comprising a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be obtained in an aqueous phase in the presence of a hydroxide base and a neutral surfactant, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The neutral surfactant may comprise at least one compound having a structure of, in which R1 is a saturated or unsaturated hydrocarbyl group having about 8 to about 30 carbon atoms; R2 is C1-C4 optionally branched alkyl, CH2OH, CH2O(CH2CH2O)xCH2CH2OH (x is 0 or a positive integer), CH(OH)CH2OH, CO2H, or CH2SO3-, and R3 is H or C1-C4 optionally branched alkyl, and R2 and R3 are not simultaneously CH2OH and H, respectively. The reaction product of the saccharide polymer may be present in the aqueous phase at a concentration effective to lower a surface tension of the neutral surfactant.
Compositions comprising a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be obtained in an aqueous phase in the presence of a hydroxide base and a neutral surfactant, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The neutral surfactant may comprise at least one compound having a structure of, in which R1is a saturated or unsaturated hydrocarbyl group having about 8 to about 30 carbon atoms; R2142222x2222233 -, and R3144 optionally branched alkyl, and R2and R322OH and H, respectively. The reaction product of the saccharide polymer may be present in the aqueous phase at a concentration effective to lower a surface tension of the neutral surfactant.
Compositions comprising a reaction product of a saccharide polymer and a fatty ester may be obtained in an aqueous phase in the presence of a hydroxide base and a neutral surfactant, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The compositions also comprise one or more alcohols originating from the fatty ester upon forming the reaction product of the saccharide polymer and the fatty ester. The reaction product of the saccharide polymer and the fatty ester may be present in the aqueous phase at a concentration effective to lower a surface tension of the neutral surfactant. The fatty ester may comprise one or more glycerol esters, such as one or more plant and/or animal oils and/or fats, and the one or more alcohols originating from the fatty ester may comprise glycerol. Fatty acids originating from the fatty ester may be substantially straight-chain fatty acids.
C08J 3/03 - Production de solutions, dispersions, latex ou gel par d'autres procédés que ceux utilisant les techniques de polymérisation en solution, en émulsion ou en suspension dans un milieux aqueux
C08K 5/103 - Esters; Ether-esters d'acides monocarboxyliques avec des polyalcools
C08L 3/02 - Amidon; Ses produits de dégradation, p.ex. dextrine
13.
COMPOSITIONS COMPRISING REACTION PRODUCTS OF SACCHARIDE POLYMERS AND FATTY ESTERS FORMULATED WITH A NEUTRAL SURFACTANT
Compositions comprising a reaction product of a saccharide polymer and a fatty ester may be obtained in an aqueous phase in the presence of a hydroxide base and a neutral surfactant, the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The compositions also comprise one or more alcohols originating from the fatty ester upon forming the reaction product of the saccharide polymer and the fatty ester. The reaction product of the saccharide polymer and the fatty ester may be present in the aqueous phase at a concentration effective to lower a surface tension of the neutral surfactant. The fatty ester may comprise one or more glycerol esters, such as one or more plant and/or animal oils and/or fats, and the one or more alcohols originating from the fatty ester may comprise glycerol. Fatty acids originating from the fatty ester may be substantially straight-chain fatty acids.
C08L 3/02 - Amidon; Ses produits de dégradation, p.ex. dextrine
C08K 5/103 - Esters; Ether-esters d'acides monocarboxyliques avec des polyalcools
C08J 3/03 - Production de solutions, dispersions, latex ou gel par d'autres procédés que ceux utilisant les techniques de polymérisation en solution, en émulsion ou en suspension dans un milieux aqueux
14.
AMINOCARBOXYLIC ACID-FUNCTIONALIZED SACCHARIDE POLYMERS AND METHODS FOR PRODUCTION AND USE THEREOF
Fluid contaminants may be prevalent in many industries, such as the mining industry. Functionalized saccharide polymers comprising two or more monosaccharide units linked by glycosidic bonds and having a portion of the monosaccharide units oxidatively opened and functionalized with at least one aminocarboxylic acid covalently bound through nitrogen at a site of oxidative opening may be utilized in conjunction with fluid remediation processes, such as froth flotation. In non-limiting examples, the functionalized saccharide polymers may also be useful for promoting dust control, particulate coating, clay stabilization, and various subterranean treatment operations. Glycine represents one example of an aminocarboxylic acid that may be covalently bonded through nitrogen at a site of oxidative opening.
Fluid contaminants may be prevalent in many industries, such as the mining industry. Functionalized saccharide polymers comprising two or more monosaccharide units linked by glycosidic bonds and having a portion of the monosaccharide units oxidatively opened and functionalized with at least one aminocarboxylic acid covalently bound through nitrogen at a site of oxidative opening may be utilized in conjunction with fluid remediation processes, such as froth flotation. In non-limiting examples, the functionalized saccharide polymers may also be useful for promoting dust control, particulate coating, clay stabilization, and various subterranean treatment operations. Glycine represents one example of an aminocarboxylic acid that may be covalently bonded through nitrogen at a site of oxidative opening.
Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. In addition, the compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.
An agricultural product may comprise an aqueous carrier phase, a neutral surfactant or a reaction product thereof, and a reaction product of a saccharide polymer and a fatty acid. The reaction product of the saccharide polymer may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant). The saccharide polymer comprises a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant and may be highly biodegradable as evaluated by OECD 301B. Compositions comprising the reaction product of the saccharide polymer and the fatty acid may be applied to an untreated soil to form a treated soil that absorbs water faster or to a greater extent than does the untreated soil.
A01G 24/35 - Substrats de culture; Milieux de culture; Appareils ou méthodes à cet effet basés sur ou contenant des composés organiques synthétiques contenant des polymères absorbant l’eau
C05G 3/50 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais Émulsifiants
C05G 3/70 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la mouillabilité, p.ex. des agents siccatifs
An agricultural product may comprise an aqueous carrier phase, a neutral surfactant or a reaction product thereof, and a reaction product of a saccharide polymer and a fatty acid. The reaction product of the saccharide polymer may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant). The saccharide polymer comprises a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant and may be highly biodegradable as evaluated by OECD 301B. Compositions comprising the reaction product of the saccharide polymer and the fatty acid may be applied to an untreated soil to form a treated soil that absorbs water faster or to a greater extent than does the untreated soil.
C05G 3/70 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la mouillabilité, p.ex. des agents siccatifs
A01G 24/35 - Substrats de culture; Milieux de culture; Appareils ou méthodes à cet effet basés sur ou contenant des composés organiques synthétiques contenant des polymères absorbant l’eau
19.
AMINE-FUNCTIONALIZED SACCHARIDE POLYMERS PREPARED BY HYPOCHLORITE OXIDATION
Amine-functionalized saccharide polymers, including oligosaccharides and polysaccharides, may be effective for promoting clay stabilization in subterranean formations. Oxidative synthesis of amine-functionalized saccharide polymers using sodium hypochlorite pentahydrate as an oxidation reagent may afford a different distribution and type of sites of oxidative opening as compared to other types of oxidation reagents. Amine-functionalized saccharide polymers may be prepared by exposing a saccharide polymer comprising a trans-vicinal diol to an oxidation reagent comprising sodium hypochlorite pentahydrate, reacting the trans-vicinal diol to form a site of oxidative opening bearing at least one aldehyde, exposing the at least one aldehyde to an amine to form an imine intermediate at the site of oxidative opening, and reducing the imine intermediate into a secondary or tertiary amine at the site of oxidative opening.
A carrier phase, a neutral surfactant or a reaction product thereof, and a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be formulated as consumer or industrial products of various types. The reaction product of the saccharide polymer may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant). The saccharide polymer comprises a dextran, a dextrin compound, or any combination thereof, and the fatty acid comprises about 50 wt. % or above of one or more straight-chain fatty acids. Illustrative products may include adjuvants, foaming agents, hard surface cleaners, skin creams and lotions, body washes, shampoos, liquid soaps, sunscreens, hair sprays and gels, cosmetics, deodorants, and antiperspirants.
A carrier phase, a neutral surfactant or a reaction product thereof, and a reaction product of a saccharide polymer and a fatty acid or a fatty ester may be formulated as consumer or industrial products of various types. The reaction product of the saccharide polymer may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant). The saccharide polymer comprises a dextran, a dextrin compound, or any combination thereof, and the fatty acid comprises about 50 wt. % or above of one or more straight-chain fatty acids. Illustrative products may include adjuvants, foaming agents, hard surface cleaners, skin creams and lotions, body washes, shampoos, liquid soaps, sunscreens, hair sprays and gels, cosmetics, deodorants, and antiperspirants.
Proppant embedment can sometimes be problematic during fracturing operations. A partially oxidized, amine-functionalized polysaccharide comprising a plurality of oxidatively opened monosaccharide units and bearing an amine moiety at one or more sites of oxidative opening may lessen the amount of proppant embedment that occurs. Fracturing methods may comprise providing a fracturing fluid comprising such a partially oxidized, amine-functionalized polysaccharide and a plurality of proppant particulates, introducing the fracturing fluid into a subterranean formation at a hydraulic pressure sufficient to create or extend one or more fractures therein, such that at least a portion of the plurality of proppant particulates become localized in the one or more fractures, and releasing the hydraulic pressure. Upon releasing the hydraulic pressure, embedment of the proppant particulates in a face of the one or more fractures is about 10% to about 40% of a grain size of the proppant particulates.
Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. In addition, the compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.
Metal contaminants may be problematic in a number of industries, particularly in the mining industry. Fines production and dust control may be similarly problematic in many industries, including the mining industry. Reaction products formed from a saccharide polymer and diallyldimethylammonium chloride (DADMAC) under room temperature to heating conditions in the presence of a hydroxide base or a radical initiator may be effective for promoting removal of metal contaminants from clay-containing substances, such as through froth flotation. The reaction products may also be effective for mitigating fines production and providing dust control by forming a coating upon a plurality of particulates.
Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. The compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.
Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. The compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.
Compositions comprising a neutral surfactant or a reaction product thereof and a reaction product of a saccharide polymer and a fatty acid may be obtained in the presence of water and a hydroxide base (optionally in the presence of the neutral surfactant), the saccharide polymer comprising a dextran, a dextrin compound, or any combination thereof. The reaction product of the saccharide polymer and the fatty acid may be present at a concentration effective to lower surface tension of the neutral surfactant. Depending on the fatty acid identity, among other factors, the compositions may promote emulsification or de-emulsification. In addition, the compositions may promote foam formation under appropriate conditions. Treatment fluids comprising the compositions, including foamed treatment fluids, may be introduced into a subterranean formation to perform a treatment operation in which fluid emulsification or de-emulsification may occur. The reaction products may be incorporated in soaps and other personal care products.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Surfactants as raw materials for use in the manufacture of industrial products, consumer and household products, none of the aforementioned products are to be used for the manufacture of pavement coating materials
30.
Decreasing proppant embedment with amine-functionalized polysaccharides
Proppant embedment can sometimes be problematic during fracturing operations. A partially oxidized, amine-functionalized polysaccharide comprising a plurality of oxidatively opened monosaccharide units and bearing an amine moiety at one or more sites of oxidative opening may lessen the amount of proppant embedment that occurs. Fracturing methods may comprise providing a fracturing fluid comprising such a partially oxidized, amine-functionalized polysaccharide and a plurality of proppant particulates, introducing the fracturing fluid into a subterranean formation at a hydraulic pressure sufficient to create or extend one or more fractures therein, such that at least a portion of the plurality of proppant particulates become localized in the one or more fractures, and releasing the hydraulic pressure. Upon releasing the hydraulic pressure, embedment of the proppant particulates in a face of the one or more fractures is about 10% to about 40% of a grain size of the proppant particulates. Regain permeability may also increase.
Interactions between aqueous fluids and clay-containing subterranean formations may be problematic due to issues associated with clay destabilization and migration. Subterranean treatment methods may comprise: providing a clay stabilizing composition comprising an amine-functionalized dextrin compound having 2 to about 20 glucose units linked together with α(1,4) glycosidic bonds, and an amine-functionalized dextran polymer having a plurality of glucose units linked together with α(1,6) glycosidic bonds; introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral; and interacting the amine-functionalized dextrin compound and the amine-functionalized dextran polymer with the clay-containing mineral to affect stabilization thereof. A portion of the glucose units are oxidatively opened and functionalized with at least one amine group at a site of oxidative opening in both the amine-functionalized dextrin compound and the amine-functionalized dextran polymer. The amine-functionalized dextrin compound and the amine-functionalized dextran polymer operate synergistically with one another.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Non-ionic surfactants as raw materials for use as intermediates in the manufacture of industrial products, consumer and household products; none of the above products are to be used for electroplating process or nickel plating processes or in the fields of decorative and functional surface finishing; and none of the above products containing nanoparticle polymer matrix composites containing carbon nanoparticles for a plastic substrate
33.
AMINE-FUNCTIONALIZED SACCHARIDE POLYMERS PREPARED BY HYPOCHLORITE OXIDATION
Amine-functionalized saccharide polymers, including oligosaccharides and polysaccharides, may be effective for promoting clay stabilization in subterranean formations. Oxidative synthesis of amine-functionalized saccharide polymers using sodium hypochlorite pentahydrate as an oxidation reagent may afford a different distribution and type of sites of oxidative opening as compared to other types of oxidation reagents. Amine-functionalized saccharide polymers may be prepared by exposing a saccharide polymer comprising a trans-vicinal diol to an oxidation reagent comprising sodium hypochlorite pentahydrate, reacting the trans-vicinal diol to form a site of oxidative opening bearing at least one aldehyde, exposing the at least one aldehyde to an amine to form an imine intermediate at the site of oxidative opening, and reducing the imine intermediate into a secondary or tertiary amine at the site of oxidative opening.
C09K 8/50 - Compositions pour le plâtrage des parois de trous de forage, c. à d. compositions pour la consolidation temporaire des parois des trous de forage
E21B 33/138 - Plâtrage de la paroi du trou de forage; Injections dans la formation
34.
AMINE-FUNCTIONALIZED SACCHARIDE POLYMERS PREPARED BY HYPOCHLORITE OXIDATION
Amine-functionalized saccharide polymers, including oligosaccharides and polysaccharides, may be effective for promoting clay stabilization in subterranean formations. Oxidative synthesis of amine-functionalized saccharide polymers using sodium hypochlorite pentahydrate as an oxidation reagent may afford a different distribution and type of sites of oxidative opening as compared to other types of oxidation reagents. Amine-functionalized saccharide polymers may be prepared by exposing a saccharide polymer comprising a trans-vicinal diol to an oxidation reagent comprising sodium hypochlorite pentahydrate, reacting the trans-vicinal diol to form a site of oxidative opening bearing at least one aldehyde, exposing the at least one aldehyde to an amine to form an imine intermediate at the site of oxidative opening, and reducing the imine intermediate into a secondary or tertiary amine at the site of oxidative opening.
Metal contaminants may be problematic in a number of industries, particularly in the mining industry. Fines production and dust control may be similarly problematic in many industries, including the mining industry. Reaction products formed from a saccharide polymer and diallyldimethylammonium chloride (DADMAC) under room temperature to heating conditions in the presence of a hydroxide base or a radical initiator may be effective for promoting removal of metal contaminants from clay-containing substances, such as through froth flotation. The reaction products may also be effective for mitigating fines production and providing dust control by forming a coating upon a plurality of particulates.
Proppant embedment can sometimes be problematic during fracturing operations. A partially oxidized, amine-functionalized polysaccharide comprising a plurality of oxidatively opened monosaccharide units and bearing an amine moiety at one or more sites of oxidative opening may lessen the amount of proppant embedment that occurs. Fracturing methods may comprise providing a fracturing fluid comprising such a partially oxidized, amine-functionalized polysaccharide and a plurality of proppant particulates, introducing the fracturing fluid into a subterranean formation at a hydraulic pressure sufficient to create or extend one or more fractures therein, such that at least a portion of the plurality of proppant particulates become localized in the one or more fractures, and releasing the hydraulic pressure. Upon releasing the hydraulic pressure, embedment of the proppant particulates in a face of the one or more fractures is about 10% to about 40% of a grain size of the proppant particulates.
Proppant embedment can sometimes be problematic during fracturing operations. A partially oxidized, amine-functionalized polysaccharide comprising a plurality of oxidatively opened monosaccharide units and bearing an amine moiety at one or more sites of oxidative opening may lessen the amount of proppant embedment that occurs. Fracturing methods may comprise providing a fracturing fluid comprising such a partially oxidized, amine-functionalized polysaccharide and a plurality of proppant particulates, introducing the fracturing fluid into a subterranean formation at a hydraulic pressure sufficient to create or extend one or more fractures therein, such that at least a portion of the plurality of proppant particulates become localized in the one or more fractures, and releasing the hydraulic pressure. Upon releasing the hydraulic pressure, embedment of the proppant particulates in a face of the one or more fractures is about 10% to about 40% of a grain size of the proppant particulates.
Compositions comprising crosslinked polysaccharides, particularly levan and/or dextran, may provide advantageous benefits when admixed with concrete blends. Suitable compositions may comprise a biologically sourced surfactant, and a crosslinked polysaccharide, in which the crosslinked polysaccharide comprises at least one crosslinking group bonded via ether linkages to a first polysaccharide chain and a second polysaccharide chain. Concrete blends may comprise such compositions, a cement and water. Methods for forming and/or using the concrete blends may comprise allowing the concrete blends to form a hardened mass.
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p.ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
C04B 40/00 - Procédés, en général, pour influencer ou modifier les propriétés des compositions pour mortiers, béton ou pierre artificielle, p.ex. leur aptitude à prendre ou à durcir
C08B 15/00 - Préparation d'autres dérivés cellulosiques ou de cellulose modifiée
Interactions between aqueous fluids and clay-containing subterranean formations may be problematic due to issues associated with clay destabilization and migration. Subterranean treatment methods may comprise: providing a clay stabilizing composition comprising an amine-functionalized dextrin compound having 2 to about 20 glucose units linked together with (1,4) glycosidic bonds, and an amine-functionalized dextran polymer having a plurality of glucose units linked together with (1,6) glycosidic bonds; introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral; and interacting the amine-functionalized dextrin compound and the amine-functionalized dextran polymer with the clay-containing mineral to affect stabilization thereof. A portion of the glucose units are oxidatively opened and functionalized with at least one amine group at a site of oxidative opening in both the amine-functionalized dextrin compound and the amine-functionalized dextran polymer. The amine-functionalized dextrin compound and the amine-functionalized dextran polymer operate synergistically with one another.
Interactions between aqueous fluids and clay-containing subterranean formations may be problematic due to issues associated with clay destabilization and migration. Functionalized dextrin compounds that are partially oxidized and bear at least one amine group at an oxidation site may promote clay stabilization for more effective treatment of a subterranean formation. Subterranean treatment methods may comprise: providing a clay stabilizing composition comprising an amine-functionalized dextrin compound, the amine-functionalized dextrin compound comprising 2 to about 20 glucose units linked together with α(1,4) glycosidic bonds, and a portion of the glucose units being oxidatively opened and functionalized with at least one amine group at a site of oxidative opening; introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral; and interacting the amine-functionalized dextrin compound with the clay-containing mineral to affect stabilization thereof.
Interactions between aqueous fluids and clay-containing subterranean formations may be problematic due to issues associated with clay destabilization and migration. Functionalized dextrin compounds that are partially oxidized and bear at least one amine group at an oxidation site may promote clay stabilization for more effective treatment of a subterranean formation. Subterranean treatment methods may comprise: providing a clay stabilizing composition comprising an amine-functionalized dextrin compound, the amine-functionalized dextrin compound comprising 2 to about 20 glucose units linked together with (1,4) glycosidic bonds, and a portion of the glucose units being oxidatively opened and functionalized with at least one amine group at a site of oxidative opening; introducing the clay stabilizing composition into a subterranean formation bearing a clay-containing mineral; and interacting the amine-functionalized dextrin compound with the clay-containing mineral to affect stabilization thereof.
Loose particulate materials can be problematic in various aspects. For example, loose particulate materials may generate dust or be difficult to consolidate together. Fines in loose particulate materials may also be an issue. Coated particulates may alleviate some of the foregoing issues. Suitable coated particulates may comprise a particulate material comprising sand or a ceramic, and a polysaccharide composition coated upon the particulate material, the polysaccharide composition comprising a functionalized polysaccharide. Other particulate materials such as wood chips and animal litter particulates may be coated with functionalized polysaccharides to achieve similar advantages.
B22C 1/26 - Compositions des matériaux réfractaires pour moules ou noyaux; Leur structure granulaire; Caractéristiques chimiques ou physiques de la mise en forme ou de la fabrication des moules caractérisées par l'emploi des agents liants; Mélange d'agents liants d'agents organiques de résidus de leur distillation
C04B 41/00 - Post-traitement des mortiers, du béton, de la pierre artificielle ou des céramiques; Traitement de la pierre naturelle
Polysaccharides may be partially oxidized by oxidative opening of a monosaccharide unit while still retaining glycosidic bonds. Such polysaccharides may be further functionalized with an amine moiety at a site of oxidative opening. Polysaccharides that are partially oxidized and amine-functionalized in this manner may be combined with an aqueous liquid to form compositions suitable for stabilizing clays in clay-containing formations. Clay stabilization may promote reduced swelling of the clays in the presence of water.
Loose particulate materials can be problematic in various aspects. For example, loose particulate materials may generate dust or be difficult to consolidate together. Fines in loose particulate materials may also be an issue. Coated particulates may alleviate some of the foregoing issues. Suitable coated particulates may comprise a particulate material comprising sand or a ceramic, and a polysaccharide composition coated upon the particulate material, the polysaccharide composition comprising a functionalized polysaccharide. Other particulate materials such as wood chips and animal litter particulates may be coated with functionalized polysaccharides to achieve similar advantages.
Compositions comprising crosslinked polysaccharides, particularly levan and/or dextran, may provide advantageous benefits when admixed with concrete blends. Suitable compositions may comprise a biologically sourced surfactant, and a crosslinked polysaccharide, in which the crosslinked polysaccharide comprises at least one crosslinking group bonded via ether linkages to a first polysaccharide chain and a second polysaccharide chain. Concrete blends may comprise such compositions, a cement and water. Methods for forming and/or using the concrete blends may comprise allowing the concrete blends to form a hardened mass.
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p.ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
The present invention is directed to compositions and methods for dust control in particular in industrial operations such as mining, having improved safety and reduced footprint. More particularly, the dust controlling agents are functionalized polysaccharides, partially oxidized polysaccharides that may or may not also be functionalized, or salts thereof. Also provided is a method of dust control in an environment comprising: providing a polymer and an aqueous liquid to form a mixture, wherein the polymer comprises partially oxidized dextran, levan, and/or guar containing intact glycosidic bonds and functionalized with one or more amino and/or alkyl moieties; and applying the mixture to an area that generates dust.
The invention is directed to stabilizing functionalized polymers and compositions containing polysaccharides and polysaccharide derivatives functionalized with amine, alkyl and/or alkyl/amine moieties, and methods for reducing swelling of soils and especially clay-containing soils with stabilization functionalized polymers and compositions of the invention. The present invention overcomes the problems and disadvantages associated with current strategies and designs and provides new tools, compositions and methods for stabilizing soils and other materials.
The invention is directed to stabilizing functionalized polymers and compositions containing polysaccharides and polysaccharide derivatives functionalized with amine, alkyl and/or alkyl/amine moieties, and methods for reducing swelling of soils and especially clay-containing soils with stabilization functionalized polymers and compositions of the invention.
