Peel and stick roofing membranes with cured pressure-sensitive adhesives

Patent metadata

Field	Value
Publication number	US-10370854-B2
Application number	US-201715398868-A
Country	US
Kind code	B2
Filing date	Jan 5, 2017
Priority date	Sep 18, 2013
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

A membrane composite comprising a polymeric membrane panel, an adhesive layer, and a release member, where the adhesive layer is a pressure-sensitive adhesive that is at least partially cured, and where the adhesive layer has a thickness of at least 102 μm.

First claim

What is claimed is:

1. A roofing membrane composite comprising:
a. a polymeric membrane panel for providing a weatherproof polymeric barrier to a building structure;
b. an adhesive layer; and
c. a release member, where the adhesive layer is an ultraviolet (UV) cured pressure-sensitive adhesive that is at least partially cured and where the at least partially cured pressure-sensitive adhesive is characterized by a cross-linked infinite polymer network, and where the adhesive layer has a thickness of at least 102 μm.

2. The membrane composite of claim 1 , where the adhesive layer is in contact with substantially all of one planar surface of the membrane panel.

3. The membrane composite of claim 1 , where the adhesive layer includes a UV-cured poly(acrylate) resin.

4. The membrane composite of claim 1 , where the polymeric membrane is a thermoplastic membrane.

5. The membrane composite of claim 1 , where the polymeric membrane is a cured rubber membrane.

6. The membrane composite of claim 1 , where the membrane composite is characterized by a peel strength, when adhered to a stainless steel panel and tested according to PSTC 101 , of at least 3.0 psi.

7. The membrane composite of claim 1 , where the membrane composite is characterized by a dead load shear, when adhered to a stainless steel panel and tested according to PSTC 107 , of at least 0.5 hour.

8. The membrane composite of claim 1 , where the adhesive layer has a thickness of from about 102 to about 381 μm.

9. The membrane composite of claim 1 , where the adhesive layer has a thickness of from about 127 to about 305 μm.

10. The membrane composite of claim 1 , where the adhesive layer has a thickness of at least 152 μm.

11. The membrane composite of claim 1 , where the adhesive layer is formed from a UV-curable composition that comprises a polyacrylate elastomer.

12. The membrane composite of claim 11 , where the polyacrylate elastomer includes polymerized units that serve as photoinitiators.

13. The membrane composite of claim 11 , where the polyacrylate elastomer is characterized by a number average molecular weight of from about 100 to about 350 kg/mol.

14. The membrane composite of claim 11 , where the polyacrylate elastomer is characterized by a Brookfield viscosity at 150° C. of from about 20,000 to about 70,000 cps.

15. The membrane composite of claim 11 , where the UV-curable composition further comprises one or more of photoinitiators, solvents, plasticizers, and resins.

16. The membrane composite of claim 11 , where the polyacrylate elastomer has a Tg of less than 0° C.

17. The membrane composite of claim 1 , where the roofing membrane panel has a thickness of from about 500 μm to about 3 mm.

18. The membrane composite of claim 1 , where the polymeric membrane is ethylene-propylene-diene terpolymer rubber (EPDM).

19. A roof system comprising:
a. a roof substrate;
b. a polymeric membrane panel for providing a weatherproof polymeric barrier to the roof substrate; and
c. an adhesive layer disposed between the roof substrate and the polymeric membrane, where the adhesive layer is a an ultraviolet (UV) cured pressure-sensitive adhesive that is at least partially cured and where the at least partially cured pressure-sensitive adhesive is characterized by a cross-linked infinite polymer network, and where the adhesive layer has a thickness of at least 102 μm.

20. The roof system of claim 19 , where the adhesive layer is characterized by a peel strength, when adhered to a stainless steel panel and tested according to PSTC 101 , of at least 3.0 psi.

Assignees

• Firestone Building Prod Co Llc

Inventors

• Tang Jiansheng
• Hubbard Michael J

Classifications

• E04D5/148 Primary

  fastening by gluing · CPC title

• E04D5/06

  by making use of plastics · CPC title

• C09J7/243

  Ethylene or propylene polymers · CPC title

• C09J133/00

  Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers · CPC title

• B32B27/00

  Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)} · CPC title