Abstract: Novel synthetic elastomer and/or natural rubber-based adhesive liquid coatings adapted for use as a primer coating for pipelines, which coatings include an amphipathic metal complexing reagent in an amount effective to provide protection against cathodic disbondment; and novel protective pipewrap systems including same.

Abstract: An aqueous emulsion of a blend of asphalt having viscosity at 165.degree. F. of about 100 to about 1000 centipoises with a petroleum extender oil preferably having a viscosity at 40.degree. C. of not more than about 1000 centistokes, preferably stabilized with a protective colloid in conjunction with conventional surfactants, provides a particularly effective and long-lasting treatment of substrates, such as dirt or gravel roads and the like, for suppressing the evolution of fugitive dust therefrom by applying the emulsion, usually in dilute form, to the exposed surface of the substrate, as by spraying.

Abstract: A joint sealing compound comprises the reaction product of a non-blown asphalt flux, a hydroxyl-terminated polymer of butadiene, a vinyl monomer, a butadiene-styrene linear block polymer and an extender oil.