Process for production of bituminous compositions containing polymeric residues
US5252641A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Jul 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for the production of bituminous compositions containing residues of polymers and in particular sterile car waste resulting mainly from the crushing and cutting into small pieces of car bodies. The process involves five successive stages, namely a grinding of the polymer mixture, washing with water to eliminate soil, drying, mixing with pulverulent bitumen and shaping, preferably by extrusion and granulation or compacting by compression. The polymer residue-concentrated bituminous compositions can be advantageously used in the diluted state for improving the use and stability characteristics, as well as the mechanical properties of bitumens for use in roads or industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.