Corrosion resistant barriers

• US 6,231,967 B1
• Filed: 04/15/1997
• Issued: 05/15/2001
• Est. Priority Date: 04/15/1997
• Status: Expired due to Fees

• Current Assignee: Polymer Ventures, Inc.
• Original Assignee: Polymer Ventures, Inc.
• Inventors: Neukirchen, John D.
• Primary Examiner(s): LE, HOA T
• Application Number:
  US08/834,288
• Time in Patent Office: 1,491 Days
• Field of Search: 428/332, 428/489, 428/457, 428/468, 428/543, 427/138
• US Class Current: 428/332
• CPC Class Codes: B05D 7/54 No clear coat specified
• CPC Class Codes: B05D 7/58 No clear coat specified
• CPC Class Codes: C04B 2111/27 Water resistance, i.e. waterproof or water-repellent materials
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/4527 Plasma spraying deposition from the gas phase using plasma C04B41/4533
• CPC Class Codes: C04B 41/463 Organic solvents
• CPC Class Codes: C04B 41/478 Bitumen, asphalt, e.g. paraffin
• CPC Class Codes: C04B 41/48 Macromolecular compounds
• CPC Class Codes: C04B 41/483 Polyacrylates
• CPC Class Codes: C04B 41/52 Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
• CPC Class Codes: C04B 41/70 for obtaining at least two superposed coatings having different compositions
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/31717 Next to bituminous or tarry residue
• CPC Class Codes: Y10T 428/31815 Of bituminous or tarry residue
• CPC Class Codes: Y10T 428/8305 Miscellaneous [e.g., treated surfaces, etc.]

Abstract

Saltwater, waste water, atmospheric and other corrosion resistant barrier apparatus and radioactive contamination containment barrier apparatus that are applied to a substrate, such as to metal, steel, concrete, rock, stone, ceramic material, tile, and the like, and methods for manufacturing the same. The apparatus generally having an asphaltic mastic basecoat and a thermoplastic topcoat which is at least partially melted and integrated into the mastic basecoat. Alternatively, the apparatus further having a solvent primer which is applied to the substrate prior to the application of the mastic basecoat.

Claims

1. A field applied apparatus for shielding and protecting a substrate of substantially non-flammable material from corrosion or abrasion, said apparatus comprising combination of:

(a) a polymer modified thermoplastic basecoat applied to the substrate, said basecoat changing to a fluid, semi-fluid or molten state when heated, said basecoat adhering or bonding to the substrate when applied to the substrate; and

(b) a thermoplastic topcoat applied to said basecoat, said topcoat at least partially melting and integrating into said basecoat, said basecoat and said topcoat defining separate thermoplastic polymers, said basecoat forming a substantially stable anticorrosive foundation, adhesive or sealant for said topcoat, said topcoat forming an integrally bonded layer over said basecoat, said topcoat protecting said basecoat from mechanical, chemical or ultraviolet attack.

2. The apparatus of claim 1, wherein said basecoat becomes fluid, semi-fluid or molten at about 350 degrees Fahrenheit to 500 degrees Fahrenheit, said basecoat having compatible thermoplastic properties with said topcoat.

3. The apparatus of claim 1, wherein said basecoat is applied to the substrate in a molten state.

4. The apparatus of claim 1, further comprising a solvent mixed with said basecoat to increase viscosity, said solvent and said basecoat applied to said substrate.

5. The apparatus of claim 1, wherein said basecoat comprises a thickness of about 70 mils to 80 mils.

6. The apparatus of claim 1, wherein said topcoat comprises a thickness of about 10 mils to 30 mils.

7. The apparatus of claim 1, wherein the substrate is metal, steel, concrete, rock, stone, ceramic or tile.

8. The apparatus of claim 1, further comprising a primer applied to the substrate, said primer adhering or bonding to the substrate, said basecoat adhering or bonding to said primer.

9. The apparatus of claim 8, further comprising a solvent mixed with said basecoat to increase viscosity, said solvent and said basecoat applied to said substrate.

10. The apparatus of claim 1, further comprising an abrasion resistant material that is adhered, pressed, rolled or sprayed into operative engagement with said topcoat.

11. The apparatus of claim 10, wherein said abrasion resistant material comprises beads, metal shavings, pellets, shot, glass, aggregate, granite, gravel or sand.

12. An apparatus for shielding and protecting a substrate of non-flammable material from corrosion and abrasion, said apparatus comprising combination of:

(a) polymer modified thermoplastic basecoat applied to the substrate, said basecoat changing to a fluid, semi-fluid or molten state when heated, said basecoat adhering or bonding to the substrate when applied to the substrate; and

(b) a thermoplastic topcoat applied to said basecoat, said topcoat at least partially melting and integrating into said basecoat, said basecoat comprising an asphaltic material.

13. A field applied method for shielding and protecting a substrate of substantially non-flammable material from corrosion or abrasion, said method comprising steps of:

(a) applying a polymer modified thermoplastic basecoat to the substrate, the basecoat changing to a fluid, semi-fluid or molten state when heated, the basecoat adhering or bonding to the substrate when applied to the substrate; and

(b) applying a thermoplastic topcoat to the basecoat, the topcoat at least partially melting and integrating into the basecoat, the basecoat and the topcoat defining separate thermoplastic polymers, the basecoat forming a substantially stable anticorrosive foundation, adhesive or sealant for the topcoat, the topcoat forming an integrally bonded layer over the basecoat, the topcoat protecting the basecoat from mechanical, chemical or ultraviolet attack.

14. The method of claim 13, wherein said step of applying the basecoat further comprises a step of heating the basecoat at about 350 degrees Fahrenheit to 500 degrees Fahrenheit such that the basecoat becomes fluid, semi-fluid or molten, the basecoat having compatible thermoplastic properties with the topcoat.

15. The method of claim 13, wherein said step of applying the basecoat comprises a step of applying a basecoat of asphaltic material to the substrate.

16. The method of claim 13, wherein said step of applying the basecoat comprises a step of applying the basecoat in a molten state to the substrate.

17. The method of claim 13, wherein said step of applying the basecoat comprises a step of mixing a solvent with the basecoat to increase viscosity, and a step of applying the solvent and the basecoat to the substrate.

18. The method of claim 13, wherein said step of applying the basecoat comprises a step of applying the basecoat to a thickness of about 70 mils to 80 mils on the substrate.

19. The method of claim 13, wherein said step of applying the topcoat comprises a step of applying the topcoat to a thickness of about 10 mils to 30 mils on the basecoat.

20. The method of claim 13, wherein said step of applying the basecoat to the substrate comprises a step of applying the basecoat to a metal, steel, concrete, rock, stone, ceramic or tile substrate.

21. The method of claim 13, further comprising a step of applying a primer to the substrate prior to said step of applying the basecoat to the substrate, the primer adhering or bonding to the substrate, the basecoat adhering or bonding to the primer.

22. The method of claim 13, further comprising a step of adhering, pressing, rolling or spraying an abrasion resistant material into operative engagement with the topcoat.

23. The method of claim 22, wherein said step of adhering, pressing, rolling or spraying the abrasion resistant material comprises a step of adhering, pressing, rolling or spraying beads, metal shavings, pellets, shot, glass, aggregate, granite, gravel or sand into operative engagement with the topcoat.

24. The method of claim 13, further comprising a step of applying heat to the substrate prior to said step of applying the basecoat.