US Patent 9920515 Thermoplastic polyolefin membrane with enhanced thermal resistance

Disclosed herein are thermoplastic olefin (TPO) membranes with enhanced thermal resistance. In an embodiment, the disclosed may include a cap layer, a core layer, and a scrim layer disposed therebetween. The cap layer may be formulated with TPO resins and a UV stabilizer package comprising ultrafine Ti02. The UV stabilizer package may further comprise various other additives, including a UV stabilizer, an antioxidant, a process or thermal stabilizer, and/or a UV absorber.