Waterproof coating 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.
Claims16
A method of applying a coating to a surface, comprising:
- a) providing a spray gun with first and second nozzles;
- b) discharging a resin solution from the first nozzle at a first fluid pressure, wherein said resin solution comprises a solution of neoprene latex and liquid asphalt emulsion;
- c) aerating an aqueous accelerator solution with compressed air and wherein said accelerate aqueous solution comprises no critic acid;
- d) discharging the accelerator solution from the second nozzle at a second fluid pressure;
- e) combining the discharged resin solution with the discharged accelerator solution before application to the surface;
- and
- f) curing the combined resin and accelerator solutions before application to the surface, wherein upon combination of the resin solution and the accelerator solution, a cure occurs, wherein the combination has the ability to stretch 1500%.
A method of applying a coating to a surface, comprising:
- a) providing a spray gun with first and second nozzles;
- b) discharging from the first nozzle at a first fluid pressure a resin solution comprising water, a liquid neoprene latex, and a liquid asphalt emulsion;
- c) discharging from the second nozzle at a second fluid pressure an accelerator solution effective to promote coagulation of the resin solution, the accelerator solution comprising water and zinc sulfate, but not citric acid, and wherein upon said combining, a cure of the coating occurs and wherein the coating has the ability to stretch 1500%.
A method of applying a coating to a surface, comprising:
- a) providing a spray gun with first and second nozzles, wherein the first and second nozzles are angled toward each other;
- b) discharging a resin solution from the first nozzle at a first fluid pressure;
- c) aerating an accelerator solution with compressed air and discharging the accelerator solution from the second nozzle at a second fluid pressure;
- d) combining the discharged resin solution with the discharged accelerator solution at a predetermined distance from the nozzles and before application to the surface;
- e) curing the combined resin and accelerator solutions before application to the surface
- f) wherein said resin solution comprises a solution of neoprene latex and liquid asphalt emulsion and wherein said accelerator solution includes an aqueous solution of zinc sulfate and water, but not citric acid and wherein upon said combining, a cure of the coating occurs and wherein the coating has the ability to stretch 1500%.
Dependencies are inferred from the claim text.