Abstract: According to some embodiments, a system and method for dispensing a floor coating in a specified ratio of multiple components is disclosed. The system and method may set and maintain a desired ratio of the multiple components by controlling, with a controller, a drive rate of respective pumps configured for propelling the components from a reservoir to a mixer or a dispenser. The controller may be responsive to at least one of a measured actual drive rate, an environmental condition, an actual usage of each component, and an operational parameter of the system, for adjusting a drive rate of the respective pumps to compensate for discrepancies that may affect the ratio of the multiple components.

Abstract: This invention relates to a process for purifying a heteropolyacid which comprises: subjecting an aqueous solution comprising (i) the heteropolyacid and (ii) salt impurities to at least one liquid/liquid extraction step with an organic solvent, characterized in that the organic solvent comprises a dihydrocarbyl ether having at least 5 carbon atoms.

Abstract: This invention relates to a process for purifying a heteropolyacid which comprises: subjecting an aqueous solution comprising (i) the heteropolyacid and (ii) salt impurities to at least one liquid/liquid extraction step with an organic solvent, characterized in that the organic solvent comprises a dihydrocarbyl ether having at least 5 carbon atoms.

Abstract: This invention relats to a continuous process for the hydration of olefins with water in the vapour phase to the corresponding alcohol in the presence of a heteropolyacid salt as catalyst said process including the recycle of un-reacted olefin back to the hydration reaction characterised in that the heteropolyacid salt is a metal salt of silicotungstic acid or phosphotungstic acid which is soluble in a polar solvent below 40.degree. C. wherein the metal in the salt is an alkali metal or an alkaline earth metal.

Abstract: In order to locate an inaccessible object, such as an underground boring tool (30), a solenoid (10) on or in the tool generates a magnetic field which is detected at two measuring locations (20, 21). Information relating to the relationship between the axial and radial components of the field from the solenoid (10) are stored, and comparison of the measured values of the axial and radial components at the measurement locations (20, 21) enables the direction of the solenoid (10) from the measurement locations (20, 21) to be determined. The known attenuation of the magnetic field from the solenoid (10) enables the distance between the solenoid (10) and the measurement locations to be determined from the absolute value of the field at the measurement locations (20, 21) and the direction to the solenoid (10).

Abstract: A cobalt catalyst for use in the Fischer Tropsch reaction of synthesis gas to form hydrocarbons is activated or regenerated by treatment of a cobalt containing catalyst with a gas containing carbon monoxide, said gas containing less than 30% v hydrogen. The catalyst obtained has increased activity and greater selectivity towards producing C.sub.5 + hydrocarbons.