US 12,168,874 B2
Roofing membranes comprising pressure-sensitive adhesives and methods of using same
Ying Wang, Westborough, MA (US); Eric Dong, Northboro, MA (US); Paul A. Benensky, Collegeville, PA (US); Mark W. Simon, Sutton, MA (US); Abby Feinstein, Malvern, PA (US); Nicky Chan, Hudson, MA (US); and Choung-Houng Lai, Acton, MA (US)
Assigned to CERTAINTEED LLC, Malvern, PA (US)
Filed by CertainTeed LLC, Malvern, PA (US)
Filed on Dec. 7, 2021, as Appl. No. 17/543,818.
Claims priority of provisional application 63/122,324, filed on Dec. 7, 2020.
Prior Publication US 2022/0178144 A1, Jun. 9, 2022
Int. Cl. E04D 5/14 (2006.01); C09J 7/38 (2018.01); C09J 7/40 (2018.01); E04D 5/06 (2006.01)
CPC E04D 5/148 (2013.01) [C09J 7/385 (2018.01); C09J 7/40 (2018.01); E04D 5/06 (2013.01); E04D 5/143 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A roofing membrane comprising:
a bituminous sheet having a lower bituminous surface providing a bottom surface of the roofing membrane and an upper bituminous surface providing an top surface of the roofing membrane; and
a non-bituminous cold-temperature pressure-sensitive adhesive disposed on the lower bituminous surface, the upper bituminous surface, or both, wherein the roofing membrane has an average adhesion at the cold-temperature pressure-sensitive adhesive of at least 8 lbs/ft (117 N/m) at 2° C. as measured by a two hour T-peel test.