Bitumen-polymer stabilizer, stabilized bitumen-polymer compositions and methods for the preparation thereof
US5280064A · kind A · utility
26Cited by
1References
43Claims
0Family size
Inventors
Key dates
| Filing date | Sep 30, 1991 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Sep 30, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stabilizer for bitumen-polymer compositions. Polyethylene-bitumen compositions having the polyethylene component dispersed throughout the solution and stabilized against gross phase separation are described. A method for preparation of the stabilizer includes vulcanization of a bitumen and amine-terminated poly(butadiene-co-acrylonitrile). Carboxylated polyethylene is coupled with the vulcanization product to obtain the stabilizer. Polyethylene dispersed in bitumen containing the stabilizer does not undergo gross phase separation and droplets in the 1 to 5 micron range are observed microscopically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.