Roofing membranes, compositions, and methods of making the same
US11684115B2 · kind B2 · utility
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58References
9Claims
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Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Nov 18, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/0617
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A roofing membrane and a method of making the same is provided. The roofing membrane includes a top layer having a flame retardant and a first silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3; a scrim layer; and a bottom layer having a flame retardant and a second silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm3. The top and bottom layers of the roofing membrane both exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.