Roofing compositions comprising linear low density polyethylene
AssigneeJohns Manville
InventorsLichih R. Peng, Jordan Kortmeyer, Lance Wang, Jawed Asrar
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Abstract
Provided is a polymer blend composition comprising linear low density polyethylene, a propylene polymer generally having rubber dispersed therein, and a combination of a propylene copolymer and an ethylene copolymer. In one embodiment, there is provided a polymer blend composition comprising 15 to 75 weight percent of a propylene polymer having from 10-60% crystallinity, 30-50 weight percent of a linear low density polyethylene, and a combination of the propylene copolymer and the ethylene copolymer comprising the remainder of the composition.
Claims24
A polymer blend composition comprising:
- a) propylene polymer having from 10-60% crystallinity;
- b) a linear low density polyethylene;
- c) a propylene copolymer;
- and
- d) an ethylene copolymer.
A roofing membrane comprising a blend comprised of a thermoplastic polyolefin and a linear low density polyethylene.
Dependencies are inferred from the claim text.