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: The present invention is directed to compositions and methods for reducing lost circulation in drilling wells with compositions preferably comprising cross linked levan and calcium carbonate mixed with clay minerals such as kaolinite and other minerals blends or salts thereof.

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: 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: 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.