Process for obtaining bitumens containing at least one elastomer and products obtained
US5256712A · kind A · utility
6Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jun 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This process for obtaining bitumens containing at least one elastomer comprises two steps according to which, in the first step, a homogeneous dispersion is prepared consisting of elastomer and of selected bitumen containing a low percentage of saturated products and of asphaltenes by blending the said elastomer and the said bitumen until a master solution containing a high concentration of elastomer is obtained and, in the second step, the said master solution is diluted with a roadmaking bitumen until a homogeneous product is obtained in the form of an elastomeric bitumen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.