Fire resistant composite roofing membrane
US10443190B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2018 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Nov 1, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D5/148
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite roofing membrane containing a single ply roofing membrane containing a first membrane, a scrim, and a second membrane. The first side of the first membrane forms the upper surface of the composite roofing membrane and contains a thermoplastic polymer. The scrim has a machine and cross-machine direction and contains a yarn or fiber selected from the group consisting of polyester and glass, and a tensile strength in the machine direction is at least about 100 N/cm2. The second membrane contains a thermoplastic polymer. The composite roofing membrane also contains a fire resistant fleece containing a plurality of FR rayon staple fibers and a plurality of char scaffold fibers selected from the group consisting of partially oxidized acrylonitrile and silica staple fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.