The present disclosure provides polymeric systems that exhibit enhanced viscosity and proppant transport properties while providing enhanced particle dispersion capabilities.

The present disclosure provides polymeric systems that exhibit enhanced viscosity and proppant transport properties while providing enhanced particle dispersion capabilities.

Compositions and methods involving polyvalent cation reactive polymers for use as lost circulation materials in subterranean treatment operations are provided. In some embodiments, the methods include forming a treatment fluid including a base fluid, a source of a polyvalent cation, a polyvalent cation reactive polymer, and an acid precursor; introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation; and allowing the treatment fluid to at least partially set.

Compositions and methods involving polyvalent cation reactive polymers for use as lost circulation materials in subterranean treatment operations are provided. In some embodiments, the methods include forming a treatment fluid including a base fluid, a source of a polyvalent cation, a polyvalent cation reactive polymer, and an acid precursor; introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation; and allowing the treatment fluid to at least partially set.

A curing agent for water glass molding comprises: ester; amorphous silica; and water. The amorphous silica is formed by means of a pyrolysis method and/or by means of a precipitation method. Also disclosed is a use of the curing agent for water glass molding in preparation of a casting mold and a mold core. Respective components of the curing agent comprising ester, amorphous silica and water are mixed at a high speed to form a suspension. Next, the suspension is applied to prepare a water glass self-hardening sand. The curing agent does not cause powder contamination, and can be measured and added conveniently. Also disclosed are a manufacturing method of the curing agent for water glass molding and a water glass self-hardening sand.

A curing agent for water glass molding comprises: ester; amorphous silica; and water. The amorphous silica is formed by means of a pyrolysis method and/or by means of a precipitation method. Also disclosed is a use of the curing agent for water glass molding in preparation of a casting mold and a mold core. Respective components of the curing agent comprising ester, amorphous silica and water are mixed at a high speed to form a suspension. Next, the suspension is applied to prepare a water glass self-hardening sand. The curing agent does not cause powder contamination, and can be measured and added conveniently. Also disclosed are a manufacturing method of the curing agent for water glass molding and a water glass self-hardening sand.

Asphalt binders and bituminous compositions comprising additives such as naphthenic acid esters. In certain embodiments the ester compounds may be useful as rheology modifiers for use in bituminous binders in road paving applications.

This invention relates to a biodegradable composition comprising a low carbon footprint binder comprising a silicate, and bio-based aggregates. The invention also relates to the binder thereof, products, including insulation material and wall boards/panels, formed from the binder and the composition, a method of preparing the binder and composition and/or the products, and a method of using the binder and composition and/or the products in construction.

A fire-proof insulation material, in particular a fire-proof insulation material, which is composed of a harden-able compound which contains 19 to 40 wt % of porous glass balls, 60 to 81 wt % of an aqueous solution of sodium silicate having a density in the range of 1370 to 1400 kg/m.sup.3 and a molar ratio of SiO.sub.2 to Na.sub.2O in the range of 3.2 to 3.4, and 0.1 to 1 wt % water glass binder stabiliser, while further containing 2 to 10 wt % of chopped basalt fibre, and the surface of the porous glass balls having a diameter of 0.3 to 1 mm is provided with carbon black, the carbon black constituting 0.1 to 0.9 wt % of total weight. A method for producing a fire-proof insulating material, in particular a method for producing a fire-proof insulation material, according to which firstly the porous glass balls are mixed with an aqueous carbon black solution so that their entire surface is coated with carbon black, then the porous balls with carbon black are mixed with chopped basalt fibre and mixed to form an insulation compound, and a water glass stabiliser is added to the aqueous sodium silicate solution and then a hardener is added to this solution, then the solution is stirred for 1 to 10 minutes to form a binder solution, and then the thermal insulation compound is poured into the binder solution while constantly stirring, and the whole is mixed, and then the resulting mixture is poured into the application site.

A fire-proof insulation material, in particular a fire-proof insulation material, which is composed of a harden-able compound which contains 19 to 40 wt % of porous glass balls, 60 to 81 wt % of an aqueous solution of sodium silicate having a density in the range of 1370 to 1400 kg/m.sup.3 and a molar ratio of SiO.sub.2 to Na.sub.2O in the range of 3.2 to 3.4, and 0.1 to 1 wt % water glass binder stabiliser, while further containing 2 to 10 wt % of chopped basalt fibre, and the surface of the porous glass balls having a diameter of 0.3 to 1 mm is provided with carbon black, the carbon black constituting 0.1 to 0.9 wt % of total weight. A method for producing a fire-proof insulating material, in particular a method for producing a fire-proof insulation material, according to which firstly the porous glass balls are mixed with an aqueous carbon black solution so that their entire surface is coated with carbon black, then the porous balls with carbon black are mixed with chopped basalt fibre and mixed to form an insulation compound, and a water glass stabiliser is added to the aqueous sodium silicate solution and then a hardener is added to this solution, then the solution is stirred for 1 to 10 minutes to form a binder solution, and then the thermal insulation compound is poured into the binder solution while constantly stirring, and the whole is mixed, and then the resulting mixture is poured into the application site.