An emulsion coater apparatus for filling a screen with emulsion is described. A head delivers pressurized emulsion onto and through holes in a screen. Squeegees located on either side of the screen are then drawn across the screen's surface so as to remove excess emulsion and fill any holes not filled by the high pressure head. The emulsion coater apparatus coats a screen in a single pass, thus making the coating process more efficient. Moreover, dispersing emulsion under pressure alleviates the...

An aqueous emulsion comprising a copolymer having a two-layer structure is produced by polymerizing at least one aqueous vinyl monomer component (II) in the presence of a seed emulsion (I) comprising seeds composed of a copolymer containing 10-50% by weight of (meth)acrylonitrile as a monomer unit. This aqueous emulsion has heat resistance, solvent resistance, and anti-blocking property, and can be used as an undercoating agent, an agent for treating a back side, a binder for diazo photosensitiv...

An oil/water emulsion, such as oil well production, is treated to recover its oil phase at pipe line specifications by passing the emulsion through an emulsion treater tank to an oil recovery zone in the tank. The emulsion flow path is through successive horizontal emulsion preheating, direct heating, post heating and settling zones of the tank while removing vapor from the top of the zones and water from the bottom of the zones. Water and gas are thus removed from the emulsion in the preheating...

A coal tar emulsion driveway sealer is packaged in a sealed bag. The volume of sealer is less than half the capacity of the bag and the bag is substantially completely evacuated but for the sealer. The separated sealer is mixed by compressing the sides of the bag to induce turbulent flow of the paste and liquid for hydraulic mixing thereof. The sealer may be dispensed at a controlled rate without spattering by cutting a corner from the bag to provide a pour spout. The bag with the sealer may be ...

A technique for dyeing biological samples with dyes that are relatively insoluble in water or with combinations of dyes which are incompatible. The technique involves forming an emulsion of an immiscible solvent as the dispersed phase in water. The solvent can contain a very high concentration of a dye which is relatively insoluble in water, therefore constituting a reservoir for the diffusion of dye from the high concentration dispersed phase, through the water to the staining sites. In another...

A coal tar emulsion driveway sealer is packaged in a sealed bag. The volume of sealer is less than half the capacity of the bag and the bag is substantially completely evacuated but for the sealer. The separated sealer is mixed by compressing the sides of the bag to induce turbulent flow of the paste and liquid for hydraulic mixing thereof. The sealer may be dispensed at a controlled rate without spattering by cutting a corner from the bag to provide a pour spout. The bag with the sealer may be ...

The present invention relates to a stable emulsion of an immiscible fluid and of an aqueous phase having a determined pH value. The emulsion is optimized in that it comprises an ionic surfactant and a polyampholytic polymer whose charge depends on the pH value. The respective amounts of surfactant and of polymers are determined according to the charges. Stabilization or destabilization of the emulsion is adjusted by controlling the pH value.The invention also relates to a method of stabilizing a...

The invention provides a cosmetic or pharmaceutical composition in the form of an oil-in-glycerin emulsion, with mean droplet size below one micron, comprising a continuous glycerin phase, at least one vegetable oil comprising an internal phase, at least one emulsifying stabilizer, and at least one bioactive compount comprising at least one hydrophobic, moiety within its structure, wherein the composition facilitates stratum-corneum penetration and dermal penetration of said bioactive compound.

An oil-in-water-in-oil emulsion (O/W/O) comprising a first oil-in-water emulsion dispersed in a second oil, and a method of preparing the same. The O/W/O emulsion can be used as a drive fluid in an enhanced oil recovery process. The O/W/O emulsion of this invention may also be used as a lubricant, and has the beneficial property of being resistant to shear forces.

A silver halide photographic emulsion comprising silver halide grains, wherein a variation coefficient of equivalent-circle diameters of all the silver halide grains is 30% or less, and 70% or more of the total projected area of the silver halide grains are occupied by silver halide grains each meeting requirements (i), (ii), and (iii) below: (i) silver bromochloroiodide grain having (111) faces as main planes, (ii) having an epitaxial portion junctioned to at least one apex portion thereof, and...