Non-slip, non-abrasive coated surface

• US 5,494,729 A
• Filed: 05/04/1993
• Issued: 02/27/1996
• Est. Priority Date: 05/20/1992
• Status: Expired due to Fees

• Current Assignee: Impact Coatings, Inc.
• Original Assignee: Impact Coatings, Inc.
• Inventors: McCaw, Blair C., Henry, Jeffery W.
• Primary Examiner(s): SLUBY, PATRICIA
• Application Number:
  US08/050,334
• Time in Patent Office: 1,029 Days
• Field of Search: 525/122, 525/189, 525/115, 525/331.8, 525/403, 428/147, 428/240, 428/283, 428/284
• US Class Current: 428/147
• CPC Class Codes: B32B 7/022 Mechanical properties
• CPC Class Codes: Y10T 428/24405 Polymer or resin [e.g., natural or synthetic rubber, etc.]

Abstract

A substantially non-slip, non-abrasive surface which includes a layer of a coating vehicle comprising a polysulfide mixed with a plurality of solid elastomer particles. The particles are preferably at least partially embedded in the coating composition to provide a surface which maintains tractional sufficiency in wet and dry environments such as swimming pools and related areas.

Claims

1. A substantially non-slip coated substrate comprising:

a solid film comprising a polysulfide, the film being spread on the substrate to form an exposed film surface; and

a layer of elastomer particles between 0.3 and 3.0 mm average diameter partially bound in the exposed surface of the film, at least some of the particles projecting from the top surface of the film and not being coated with film material, said particles being softer than the solid film, the hardness of the particles being between about 45 and 95 Shore A.

2. The coated substrate of claim 1 wherein the coated substrate non-abrasive to human skin.

3. The coated substrate of claim 2 wherein the coated substrate maintains tractional sufficiency during use.

4. The coated substrate of claim 1 wherein the coated substrate is less abrasive to human skin than a substrate coated with laminated sand.

5. The coated substrate of claim 4 wherein the coated substrate maintains tractional sufficiency during use.

6. The coated substrate of claim 1 wherein the film comprises a polysulfide reacted with an oxirane group.

7. The coated substrate of claim 1 wherein the film comprises a polysulfide reacted with an oxirane group to form an adduct, the adduct comprising 20-95% of the film.

8. The coated substrate of claim 1 wherein the film comprises a polysulfide reacted with an oxirane group, and cross-linked with an amine.

9. The coated substrate of claim 1 wherein the particles comprise rubber.

10. The coated substrate of claim 1 wherein the particles comprise an ethylene-propylene modified polymer.

11. The coated substrate of claim 1 wherein the particles are between 0.5 and 1.5 mm average diameter.

12. The coating of claim 1 wherein the hardness of the film is between about 40 and 80 Shore D.

13. The coated substrate of claim 1 wherein the hardness of the film is between about 50 and 75 Shore D, and the hardness of the particles is between about 45 and 95 Shore A.

14. The coated substrate of claim 1 wherein the hardness of the film is between about 40 and 80 Shore D, and the hardness of the particles is between about 60 and 80 Shore A.

15. The coated substrate of claim 1 wherein the particles have a specific gravity between about 1.3 and 1.8 at 20°

C.

16. The coated substrate of claim 1 wherein the particles have a tensile strength pursuant to ASTM D412 of at least about 500 psi.

17. The coated substrate of claim 1 wherein the film after 7 days of cure has a tensile strength, at about 70°

-75°

F. pursuant to ASTM D638, of at least about 500 psi.

18. The coated substrate of claim 1 wherein the film after 7 days of cure has a break elongation, at about 70°

-75°

F. pursuant to ASTM D638, of at least about 15 percent.

19. The coated substrate of claim 1 wherein the film after 7 days of cure has a modulus, at between about 70°

and 75°

F. pursuant to ASTM D638, and at about 10 percent elongation, of at least about 200.

20. The coated substrate of claim 1 wherein the film does not exhibit any substantial degradation when immersed in water at 70°

F. for 30 days.

21. The coated substrate of claim 1 wherein the film does not exhibit any degradation when immersed in chlorinated water at 70°

F. for 30 days.

22. The coated substrate of claim 1 comprising between about 0.10 and 0.60 pound of particles per square foot of surface of film.

23. The coated substrate of claim 1 wherein the coating maintains tractional sufficiency during use while wet, and the coating maintains tractional sufficiency during use while dry.

24. The coated substrate of claim 1 wherein the film is between about 5 and 50 mils thick.

25. The coated substrate of claim 1 wherein the film is between about 15 and 40 mils thick.

26. The coated substrate of claim 1 wherein the particles substantially cover the exposed surface of the film.

27. A substantially non-slip coated substrate comprising:

a solid film comprising a polysulfide, the film being spread on the substrate to form an exposed film surface, and the film being between about 5 and 50 mils thick; and

a layer of elastomer particles partially bound in the exposed surface of the film, at least some of the particles projecting from the top surface of the film and not being coated with film, the particles being softer than the solid film, and the particles having an average diameter of between about 0.3 and 3.0 mm.

28. The coated substrate of claim 27 wherein the particles have a specific gravity between about 1.3 and 1.8 at 20°

C.