TAGGING OF WATERBORNE COMPOSITIONS WITH OIL-SOLUBLE MARKERS

摘要

A water-immiscible marker is dissolved in polyethylene glycol or other suita ble carrier, and the marker so dissolved is added to a waterborne composition wh ich is used as an additive to a waterborne or water processable composition. Subsequently, the marker is either extracted with a non-polar solvent or detected by means of a surface spot test. From the non-polar solvent, the marker is extracted with an acidic aqueous soluti on or an alkaline aqueous solution, depending upon the marker, and color-developed. Likewise, a surface spot test can detect the presence of the marker by, if necessary, first softening the marked surface to be tested either chemically or by thermal means, and developing a color w ith a color-developing reagent placed on the exposed surface. Applications can include the marking of paint, coatings, wax emulsions and water soluble/dispersable additives commo nly used in water based applications, e.g., cement additives.