The present disclosure relates, in some embodiments, to thermoplastic-olefin-based roofing membrane comprising a polymer blend. The polymer blend may comprise a thermoplastic olefin elastomer at about 30% to about 75% by weight of the polymer blend and a thermoplastic vulcanizate at about 10% to about 40% by weight of the polymer blend. The polymer blend may further comprise a thermoplastic polyolefin copolymer at about 5% to about 10% by weight of the polymer blend. In some embodiments, the thermoplastic olefin-based roofing membrane may be a single ply membrane configured to remain substantially free of swelling when exposed to an elastomer polymer compound. The thermoplastic olefin-based roofing membrane may be about 20 mils to about 40 mils thick. The thermoplastic-olefin-based roofing membrane may comprise a stretchability of about 14 lbf to about 30 lbf.

Claims

14 · 1 independent · depth 3

14 granted claims

›1.independentA thermoplastic-olefin-based roofing membrane comprising:na polymer blend comprising:na thermoplastic olefin elastomer at about 30% to about 75% by we…+13

›2.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the polymer blend comprises about 10% to about 25% by weight of the thermoplastic …d2

›3.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the polymer blend comprises about 35% to about 50% by weight of the thermoplastic …d2

›4.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic-olefin-based roofing membrane comprises a stretchability of abou…d2

›5.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic olefin elastomer is a polypropylene based ethylene propylene ela…d2

›6.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic olefin elastomer is a propylene/alpha-olefin copolymer comprisin…d2+1

›8.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic vulcanizate is a crosslinked ethylene propylene diene monomer an…d2

›9.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic olefin copolymer is an impact polypropylene copolymer.d2+1

›11.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic-olefin-based roofing membrane further comprises a colorant.d2

›12.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic-olefin-based roofing membrane is applied to a roofing constructi…d2

›13.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein substantially free of swelling provides for a swelling height of less than about 0…d2

›14.↳ 1The thermoplastic-olefin-based roofing membrane of claim 1, wherein the thermoplastic olefin-based roofing membrane is about 28 mils thick.d2

Classifications

4 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B62D29/04
B62D65/02
B62D25/06

Section C — Chemistry; metallurgy

C08J5/18

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1.4 y

511 days filing → grant

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after a restriction

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Nathan M Nutter

art unit 1765 · TC 1700

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