Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention is directed to compositions and methods for dust control in particular in industrial operations such as mining. More particularly, the dust controlling agents are functionalized polysaccharides, partially oxidized polysaccharides that may or may not also be functionalized, or salts thereof.

Abstract: 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.

Abstract: The present invention is directed to composition and methods for iron ore pelleting and cement binders. More particularly, the binders are bio compatible crosslinked levan and crosslinked polysaccharides or groups or salts thereof.

Abstract: 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.

Abstract: 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.

Abstract: The invention is directed to compounds, compositions and methods for the removal of contaminants from fluids and, in particular sulfates and/or metals from industrial waste water. Compounds and compositions of the invention contain polysaccharides and other organic molecules. These flocculating agents are safe and effective, requiring no special handling procedures. Flocculation compounds include biopolymers of dextran, modified dextran and blends of dextrans, plus other organic and/or inorganic molecules. With the addition of flocculants of the invention to waste water, contaminants such as sulfate and toxic heavy metals can be safely, easily and efficiently removed.

Abstract: 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.