Prefabricated membrane based on modified polyurethane bituminous binder and process for production
US7374816B2 · kind B2 · utility
4Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2003 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Sep 19, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2631
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention has for its object a prefabricated sealing membrane formed by a support, coated on at least one surface, and preferably impregnated throughout, with a modified bitumen base composition, characterized in that the thermoplastic bituminous composition for coating and/or impregnation is a bituminous binder modified by a thermoplastic polyurethane having the following weight proportion:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.