Waterproof coating system and method of application
AssigneeHarco Americas, Inc.
InventorDavid H. Smith
Life of this patent
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Abstract
A coating comprises a resin solution including a solution of neoprene latex and liquid asphalt emulsion and an accelerator solution including an aqueous solution of zinc sulfate powder and water. A spray system for applying the coating includes a spray gun having first and second nozzles, a first pump fluidly connected between the first nozzle and a resin solution reservoir for delivering the resin solution to the first nozzle at a first fluid pressure, and a second pump fluidly connected between the second nozzle and an accelerator solution reservoir for delivering the accelerator solution to the second nozzle at a second fluid pressure different from the first pressure. The accelerator solution may be aerated by a source of compressed air prior to discharge from the second nozzle.
Claims9
A two part, water-based liquid coating comprising:
- (i) in a first container, a resin solution comprising a water-based liquid neoprene latex combined with a water-based liquid asphalt emulsion, and
- (ii) in a second container, an accelerator solution effective to promote coagulation of the resin solution, the accelerator solution comprising water and zinc sulfate or citric acid,
- wherein upon combination of the resin solution and the accelerator solution, a substantially immediate cure occurs, wherein the combination has the ability to stretch 1500%, and wherein combination of the resin solution and the accelerator solution by atomization is effective to cure approximately 80% of the resulting coating in a 3 second time period.
Dependencies are inferred from the claim text.