Coated membrane composite

Patent metadata

Field	Value
Publication number	US-10843442-B2
Application number	US-201716309125-A
Country	US
Kind code	B2
Filing date	Jun 19, 2017
Priority date	Jun 17, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

A membrane composite comprising an olefinic membrane core having first and second planar surfaces, a first silicone coating layer disposed on the first planar surface, and a second silicone coating layer disposed on the second planar surface.

First claim

What is claimed is:

1. A roofing membrane composite comprising:
(i) an olefinic membrane core having first and second planar surfaces;
(ii) a first silicone coating layer disposed on said first planar surface; and
(iii) a second silicone coating layer disposed on said second planar surface, where the roofing membrane is adapted for installation on a roof surface as the roof covering;
(iv) a silicone adhesive disposed on said first or second silicone coating layer.

2. The roofing membrane composite of claim 1 , wherein the first or second silicone coating layer is crosslinked.

3. The roofing membrane composite of claim 1 , where the olefinic membrane is an EPDM membrane.

4. The roofing membrane composite of claim 3 , where the thickness of the EPDM membrane is from about 500 μm to about 3 mm, and where width of the EPDM membrane is from about 1 to about 20 m.

5. The roofing membrane composite of claim 4 , where the first and second silicone coating layers have a thickness of from about 5 to about 500 μm, and where width of the EPDM membrane is from about 3 to about 18 m.

6. The roofing membrane composite of claim 1 , where said first and second silicone coating layers mate at least one lateral edge of said membrane.

7. The roofing membrane composite of claim 1 , where said silicone coating layer is a dried or cured layer of a silicon polymer.

8. The roofing membrane composite of claim 7 , where said silicone polymer is a polysiloxane.

9. The roofing membrane composite of claim 8 , where said polysiloxane is a diorganopolysiloxane or a dihydrocarbylpolysiloxane.

10. The roofing membrane composite of claim 1 , where a primer layer is disposed between said membrane and said silicone coating layer.

11. A roofing system comprising:
(i) a first membrane composite including an olefinic membrane core having first and second planar surfaces; a first silicone coating layer disposed on said first planar surface; and a second silicone coating layer disposed on said second planar surface;
(ii) a second membrane composite including an olefinic membrane core having first and second planar surfaces; a first silicone coating layer disposed on said first planar surface; and a second silicone coating layer disposed on said second planar surface; and
(iii) a silicone adhesive adhering said first membrane composite to said second membrane composite.

12. The roof system of claim 11 , the roof system including a substrate to which said first and second membrane composites are affixed.

13. The roof system of claim 12 , where said membrane composites are affixed to said substrate through silicone adhesive.

14. The roof system of claim 11 , where said substrate includes at least one of a roof deck, an insulation board, a coverboard, or an existing membrane.

15. The roof system of claim 11 , where said olefinic membrane of said first composite and said olefinic membrane of said second composite are EPDM membranes.

16. A roofing system comprising:
(i) a roof deck;
(ii) a first and second membrane composite disposed above the roof deck and secured thereto, where each membrane composite includes an olefinic membrane core having first and second planar surfaces, a first silicone coating layer disposed on said first planar surface, and a second silicone coating layer disposed on said second planar surface, where the a first and second membrane composite are attached by a silicone adhesive to each other to thereby form a seam.

17. The roofing system of claim 16 , where an insulation board is disposed between said roof deck and said at least two membrane composites.

18. The roofing system of claim 16 , where the olefinic membrane core of said first and second membrane is an EPDM membrane, having a thickness from about 500 μm to about 3 mm, and where the first and second silicone coating layers of said first and second membrane have a thickness of from about 5 to about 500 μm.

Assignees

• Firestone Building Prod Co Llc

Inventors

• Wang Hao
• Hubbard Michael J
• Alexander Brian

Classifications

• B29C65/5057 Primary

  positioned between the surfaces to be joined (B29C65/5035 takes precedence) · CPC title

• C08J7/043

  Improving the adhesiveness of the coatings per se, e.g. forming primers (adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50) · CPC title

• E04D5/148

  fastening by gluing · CPC title

• C08J7/042

  with two or more layers, where at least one layer of a composition contains a polymer binder · CPC title

• B32B13/042

  of natural rubber or synthetic rubber · CPC title