US 11,807,785 B2
Roofing membranes and related methods
Paul C. Lem, Mountain Lakes, NJ (US); and Li-Ying Yang, Whippany, NJ (US)
Assigned to BMIC LLC, Dallas, TX (US)
Filed by BMIC LLC, Dallas, TX (US)
Filed on Jan. 6, 2023, as Appl. No. 18/151,140.
Claims priority of provisional application 63/298,068, filed on Jan. 10, 2022.
Prior Publication US 2023/0220244 A1, Jul. 13, 2023
Int. Cl. E04D 5/10 (2006.01); C09J 7/29 (2018.01); B32B 27/12 (2006.01); B32B 5/02 (2006.01); B32B 27/32 (2006.01); B32B 27/18 (2006.01); E04D 5/14 (2006.01)
CPC C09J 7/29 (2018.01) [B32B 5/024 (2013.01); B32B 27/12 (2013.01); B32B 27/18 (2013.01); B32B 27/32 (2013.01); E04D 5/10 (2013.01); E04D 5/148 (2013.01); B32B 2250/03 (2013.01); B32B 2262/0276 (2013.01); B32B 2270/00 (2013.01); B32B 2419/06 (2013.01); C09J 2423/106 (2013.01); C09J 2453/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A roofing membrane comprising:
a cap layer,
wherein the cap layer comprises:
a first non-styrenic polypropylene copolymer;
a first polypropylene impact copolymer; and
a first olefin block copolymer,
wherein the cap layer comprises no greater than 10% by weight of the first olefin block copolymer based on a total weight of the cap layer;
a core layer,
wherein the core layer comprises:
a second non-styrenic polypropylene copolymer;
a second polypropylene impact copolymer; and
a second olefin block copolymer; and
a scrim between the cap layer and the core layer.