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US 12,595,360 B2Granted
Roofing compositions comprising linear low-density polyethylene
AssigneeJohns Manville
InventorsLichih R Peng, Jordan Kortmeyer, ChangQing Shen, Lance Wang, Jawed Asrar
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Abstract
Provided is a polymer blend composition comprising linear low density polyethylene, a polypropylene polymer, generally comprising a random polypropylene copolymer, and a compatibilizer. In one embodiment, there is provided a polymer blend composition comprising 15 to 35 wt % of a polypropylene polymer, 30-60 wt % of a linear low density polyethylene, and a compatibilizer polymer composition comprising 21-50 wt % of the polymer blend. The polymer blend is quite useful in a roofing membrane.
Claims28
A polymer blend composition comprising:
- a) 15 to 35 wt % of a thermoplastic polypropylene polymer;
- b) 30 to 60 wt % of a linear low density polyethylene;
- and
- c) 21-50 wt % of a compatibilizer polymer composition.
1 more element
A membrane composition comprising:
- a) from about 40 wt % to 70 wt % of a polymer blend composition comprising:
- (i) 15 to 35 wt % of a thermoplastic polypropylene polymer;
- (ii) 30 to 60 wt % of a linear low density polyethylene;
- and
- (iii) 21-50 wt % of a compatibilizer polymer composition;
- b) at least one flame retardant;
- c) at least one ultraviolet stabilizer;
- and
- d) at least one pigment.
6 more elements
Dependencies are inferred from the claim text.