Polyolefin thermoplastic roofing membranes with improved burn resistivity
US11555312B2 · kind B2 · utility
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28References
12Claims
0Family size
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Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | Mar 18, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/258
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layered thermoplastic roofing membrane comprising a planar body including at least three layers, said at least three layers including (i) a top layer that includes magnesium hydroxide dispersed within a thermoplastic resin, (ii) an upper middle layer disposed below said top layer and including magnesium hydroxide and calcium carbonate dispersed within a thermoplastic resin, and (iii) a lower layer disposed below said upper middle layer and including magnesium hydroxide and calcium carbonate dispersed within a thermoplastic resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.