Abstract: A composition especially useful as a primer coating having improved hot line adhesion and cathodic disbonding resistance comprises a solution of chlorinated rubber and aromatic petroleum pitch in a solvent.

Abstract: Disclosed are: (1) A primer coating composition containing an air-blown, solvent extracted asphalt having a penetration of about 1 to about 12 and a softening point of about 150.degree. to about 270.degree. F; (2) a blend of 70-92 parts by weight of an air-blown, solvent extracted asphalt having a penetration of about 0 to about 7, and a softening point of about 200.degree. to about 250.degree. F., and about 8 to about 30 parts by weight of a non-air-blown, solvent extracted asphalt having a penetration of about 40 to about 150, and a softening point of about 105.degree. to about 130.degree. F., the blend having a ductility at 77.degree. F., using a speed of one cm per minute of at least 2.5, a penetration of about 7 to about 15, and a softening point of about 200.degree. to about 220.degree. F.; (3) metallic substrates coated with the primer composition set forth above; and (4) metallic substrates having a coating containing the blend set forth above.

Abstract: A composition, especially useful for making coating compositions, and having unusually good properties, comprises at least one solvent extracted hard asphalt, at least one polyhydroxy polymer, and, optionally, at least one filler and at least one stable, non-volatile, tertiary amine catalyst. This composition, where combined with at least one polyisocyanate, forms a composition especially useful for coatings, particularly finish coatings.

Abstract: Disclosed are: (1) A composition comprising a major amount of catalytically air-blown asphalt and minor amounts of plasticizer and solvent for the asphalt; (2) a method for curing uncured concrete comprising coating the uncured concrete with the composition set forth above, then curing both the concrete with the composition; and (3) cured concrete coated with a composition comprising a major amount of catalytically air-blown asphalt and a minor amount of plasticizer.

Abstract: A precursor composition, especially useful for making a patching and coating composition, and having unusual physical properties, comprises at least one non-air-blown, solvent extracted asphalt, at least one polyhydroxy polymer, at least one polyhydroxy compound, at least one polyamine, at least one solvent, and, optionally, at least one filler. This precursor composition, where combined with at least one polyisocyanate, forms a composition especially useful for coating and for patching coating.

Abstract: A process for producing sodium hydrosulfide solutions substantially free of sodium carbonate from a refinery sour gas by contacting refinery sour gas with a fresh aqueous sodium hydroxide solution in cocurrent interfacial two-phase flow and separating a sweet gas substantially free of hydrogen sulfide. There is also disclosed a novel liquid-gas two-phase interfacial flow reactor designed for use in the process. The sodium carbonate free solutions of sodium hydrosulfide are useful in the sulfate paper industry.