Ground marking foam

Abstract

A composition for producing foam is in the form of a concentrate, to be extended or diluted at the point of use in the ratio of about 1 part concentrate to 50 to 80 parts water. The concentrate includes, as principal ingredients, a surfactant functioning as a foam producing ingredient comprising about 5 to 12 percent of the concentrate, a foam stabilizing ingredient to improve the stability or longevity of the foam comprising about 1 to 10 percent of the concentrate; and water as a diluent comprising about 70 to 90 percent of the concentrate. Secondary or optional components of the concentrate may include a water softening ingredient comprising about 0.1 to 5 percent of the concentrate, a buffering agent for stabilizing the pH of the concentrate comprising about 1 to 10 percent of the concentrate, a viscosity reducing ingredient comprising about 1 to 15 percent of the concentrate, and a water soluble coloring ingredient or dye.

Dependencies are inferred from the claim text.