A spacer fluid made of a viscosity thinner, a weighting agent, an antifoaming agent, and a non-ionic surfactant in a base aqueous fluid is disclosed. In some instances, the viscosity thinner is a sulfomethylated tannin, the weighting agent is barium sulfate, the antifoaming agent is a silicone, and the non-ionic surfactant is an ethoxylated alcohol. A method of treating a well bore annulus in preparation of introducing water-based cement slurry into a well bore using the spacer fluid is disclosed. A method of using the spacer fluid to position a first fluid into a well bore annulus of a well bore containing a second fluid is disclosed. A method for fluidly isolating at least a portion of a well bore annulus in a well bore containing an oil-based drilling fluid using water-based cement slurry and the spacer fluid is disclosed.

The present invention is a dispersant composition for a hydraulic composition, which includes (A) a cement dispersant composed of a polymer having a naphthalene ring-containing monomer unit, and (B) one or more specific alkylene oxide-added compounds represented by the general formula (B1), wherein a molar ratio of a total amount of (B) to the naphthalene ring-containing monomer unit in (A) is 3% or more and 16% or less.

The present invention is a dispersant composition for a hydraulic composition, which includes (A) a cement dispersant composed of a polymer having a naphthalene ring-containing monomer unit, and (B) one or more specific alkylene oxide-added compounds represented by the general formula (B1), wherein a molar ratio of a total amount of (B) to the naphthalene ring-containing monomer unit in (A) is 3% or more and 16% or less.

A ceramic binder composition is disclosed as well as a method of making and using the same. Additionally, a ceramic coated separator used in, for example but without limitation, lithium ion batteries is disclosed.

Provided are separators for use in an electrochemical cell comprising (a) an inorganic oxide and (b) an organic polymer, wherein the inorganic oxide comprises organic substituents. Also provided are electrochemical cells comprising such separators.

Provided are separators for use in an electrochemical cell comprising (a) an inorganic oxide and (b) an organic polymer, wherein the inorganic oxide comprises organic substituents. Also provided are electrochemical cells comprising such separators.

A liquid water-based solution for application of temporary floor markings on a polyurethane coated floor and a method of applying the same is disclosed. According to one aspect, the solution comprises 5-15% by weight of an acrylic copolymer, 1%-2% propylene glycol, 0.5%-2% dipropylene glycol mono-methyl-ether, 2-8% of titanium dioxide; and 1-5% of ethelyne glycol. The solution is dispensable through a foam applicator so that it can be used to form temporary lines for recreational and athletic activities. The solution has a drying time when applied to the polyurethane floor of under five minutes and can remains water soluble for an extended period of time so that it can be removed without damaging the underlying surface.

A liquid water-based solution for application of temporary floor markings on a polyurethane coated floor and a method of applying the same is disclosed. According to one aspect, the solution comprises 5-15% by weight of an acrylic copolymer, 1%-2% propylene glycol, 0.5%-2% dipropylene glycol mono-methyl-ether, 2-8% of titanium dioxide; and 1-5% of ethelyne glycol. The solution is dispensable through a foam applicator so that it can be used to form temporary lines for recreational and athletic activities. The solution has a drying time when applied to the polyurethane floor of under five minutes and can remains water soluble for an extended period of time so that it can be removed without damaging the underlying surface.

Provided are a gypsum hardened product and a method for producing the same, whereby, in bubble-containing gypsum hardened products of the same density and the same average bubble size, strength of the gypsum hardened product can be enhanced by controlling a coefficient of variation of bubble size.

A gypsum hardened product containing bubbles, wherein a density of the gypsum hardened product is 0.4 g/cm.sup.3 or more and 0.8 g/cm.sup.3 or less, and in the gypsum hardened product, an average bubble size is 200 m or more and 600 m or less, and a coefficient of variation of bubble size is 0.30 or more and 0.48 or less.

Herein are disclosed wall repair compounds comprising at least one or more polymeric binder latex emulsions, one or more inorganic fillers, and comprising an amount of organic polymeric thickener that is less than about 0.1 percent by weight based on the total weight of the wall repair compound. In certain embodiments, the wall repair compound comprises an inorganic filler system selected such that such that synthetic inorganic fillers comprise essentially 100 percent of the inorganic filler used. In certain embodiments, the wall repair compound comprises one or more glycol ether smoothing agents.