Highly reflective asphalt-based roofing membrane
US7070844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2003 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Nov 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31819
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A prefabricated asphalt-based waterproof roofing membrane for use in a multi-ply asphalt-based commercial roofing system, e.g. a cap sheet that forms the exposed layer of a multi-ply built-up roofing system, is manufactured at a factory to have a highly reflective thermoplastic elastomeric sheet layer with a top surface that has a reflectance that meets current EPA Energy Star requirements. Preferably, a polymer primer layer is interposed between the highly reflective thermoplastic elastomeric sheet layer and an asphalt saturated and coated reinforcing substrate to keep oils and other colored components in the asphalt from exuding into the highly reflective thermoplastic elastomeric sheet layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.