Adhered thermoplastic membrane roofing system

Patent metadata

Field	Value
Publication number	US-10260237-B2
Application number	US-201415103497-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Dec 12, 2013
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

An adhered roofing system comprising a roof substrate, a thermoplastic membrane including at least one layer that includes a functionalized thermoplastic polymer, and an adhesive securing the membrane to the substrate, where the adhesive includes a cured residue of a polymer having a silicon-containing hydrolyzable terminal group.

First claim

What is claimed is:

1. An adhered roofing system comprising:
i. a roof substrate;
ii. a thermoplastic membrane including an upper thermoplastic polymer layer and a lower thermoplastic polymer layer, where the lower layer includes from about 3 to about 50 weight percent of a functionalized thermoplastic polyolefin polymer having a polar group, based upon the entire weight of the lower layer, and where the upper layer is devoid of a functionalized thermoplastic polyolefin polymer; and
iii. an adhesive securing the membrane to the substrate, where the adhesive includes a cured residue of a polymer having a silicon-containing hydrolyzable terminal group, where the lower layer of the thermoplastic membrane is in direct contact with said adhesive.

2. The roofing system of claim 1 , where the adhered roofing system is a fully-adhered roofing system.

3. The roofing system of claim 1 , where the functionalized thermoplastic polymer is maleated polypropylene.

4. The roofing system of claim 1 , where the functionalized thermoplastic polymer is a maleated propylene-based polymer.

5. The roofing system of claim 1 , where the thermoplastic membrane is a two-layered, laminated membrane.

6. The roofing system of claim 1 , where the thermoplastic membrane is a multi-layered membrane including two or more coextruded layers.

7. The roofing system of claim 1 , where the roof substrate includes an insulation board or a cover board.

8. The roofing system of claim 1 , where the roof substrate includes an existing membrane.

9. The roofing system of claim 1 , where the lower layer that includes a functionalized polymer includes from about 5 to about 25 weight percent of the functionalized polymer, based upon the entire weight of the layer that includes the functionalized polymer.

10. The roofing system of claim 1 , where the lower layer that includes a functionalized polymer includes from about 7 to about 15 weight percent of the functionalized polymer, based upon the entire weight of the layer that includes the functionalized polymer.

11. The roofing system of claim 1 , where the functionalized thermoplastic polymer is a maleated polyolefin.

12. The roofing system of claim 1 , where the polar group is selected from the group consisting of hydroxyl, carbonyl, ether, ester, halide, amine, imine, nitrile, oxirane, and isocyanate groups.

13. The roofing system of claim 1 , where the polar group is selected from carboxylic acid, anhydride, ketone, acid halide, ester, amide, and imide groups, and derivatives thereof.

14. The roofing system of claim 1 , where the functionalized thermoplastic polyolefin polymer includes at least 0.2 weight percent of a pendent polar functional group, based upon the total weight of the functionalized thermoplastic polyolefin polymer.

15. The roofing system of claim 1 , where the membrane further includes a scrim layer disposed between the upper layer and the lower layer.

16. A method for forming an adhered membrane roof system, the method comprising:
i. applying a bond adhesive to a substrate on a roof to form an adhesive layer, where the bond adhesive includes a polymer having a silicon-containing hydrolyzable terminal group; and
ii. applying a thermoplastic membrane directly to the adhesive layer, where the thermoplastic membrane includes an upper thermoplastic polymer layer and a lower thermoplastic polymer layer, where the lower layer includes from about 3 to about 50 weight percent of a functionalized thermoplastic polyolefin polymer having a polar group, based upon the entire weight of the lower layer, where the upper layer is devoid of a functionalized thermoplastic polyolefin polymer, and where the lower layer is in contact with said adhesive layer.

17. The method of claim 16 , where the substrate is completely covered with the adhesive.

18. The method of claim 16 , where the substrate is partially covered with the adhesive.

19. The method of claim 16 , where the adhesive is applied to the roof substrate in the form of a bead that is from about ¼ in to about 1 in. in diameter or thickness.

20. The method of claim 16 , where the functionalized thermoplastic polymer is maleated polypropylene.

21. The method of claim 16 , where the functionalized thermoplastic polymer is a maleated propylene-based polymer.

22. The method of claim 16 , where the lower layer includes from about 5 to about 25 weight percent of the functionalized thermoplastic polyolefin polymer, based upon the entire weight of the lower layer.

Assignees

• Firestone Building Prod Co Llc

Inventors

• Hubbard Michael John
• Wang Hao
• Tang Jiansheng
• Tippmann Donna

Classifications

• B32B5/028

  Net structure, e.g. spaced apart filaments bonded at the crossing points · CPC title

• B32B27/18

  characterised by the use of special additives · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B2250/04

  4 layers · CPC title

• B32B2250/03

  3 layers · CPC title