Bitumen compositions containing polymers
US4164490A · kind A · utility
2Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1977 |
| Grant date | Aug 14, 1979 |
| Priority date | — |
| Expiry date | Oct 7, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is related to new bitumen compositions having improved rheological properties. The compositions are characterized in that they contain: PA1 90 to 99.9% in weight of a bitumen, its softening point being comprised between 20.degree. and 120.degree. C., PA1 0.1 to 10% in weight of a norbornene polymer, its average molecular weight being between 1,000,000 and 3,000,000. The compositions of the invention are used particularly as superficial coats in road surfacing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.