Patent ID: 11951716
Assignee: JOHNS MANVILLE
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C  E | IPC B  C  E

Claim 0:
1. A roofing membrane, comprising:
a thermoplastic polyolefin (TPO) layer comprising TPO material;
a polyvinyl chloride (PVC) layer adjacent to the TPO layer, the PVC layer comprising PVC material;
a reinforcing scrim disposed between the TPO layer and the PVC layer; and
at least one compatibilizing film disposed between the TPO layer and the PVC layer;
wherein the at least one compatibilizing film comprises at least one polymer chosen from styrene-ethylene/butylene-styrene (SEBS), polypropylene grafted maleic anhydride (PPgMA), polyethylene grafted maleic anhydride (PEgMA), ketone ethylene ester (KEE), chlorinated polyethylene (CPE), styrene-butyldiene-styrene (SBS), or combinations thereof; and
wherein at least one of the TPO material and the PVC material is compatibilized via the at least one compatibilizing film so that the TPO material is chemically bonded to the PVC material.