Process for the preparation of bitumen-polymer composition
US5508112A · kind A · utility
23Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1995 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Jul 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31815
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is provided for the preparation of bitumen-polymer compositions wherein bitumen is mixed at a composition between 100.degree. C. and 230.degree. C. with a block copolymer of styrene and a conjugated diene and a coupling agent containing a sulphur-donor compound for a duration of at least 10 minutes. The coupling agent is comprised of an elementary sulphur vulcanization agent and at least one sulphur-donor vulcanization accelerator from among morpholine disulphide, N,N'-disulphide of caprolactam and thiuram polysulphides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.