Roofing felt composition
US8003717B2 · kind B2 · utility
3Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2006 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jun 2, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L91/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is directed to a novel bitumen composition comprising a paraffin wax, wherein the wax has a congealing point of between 85 and 120° C. and a PEN at 43° C., expressed in 0.1 mm, as determined by IP 376 of more than 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.