Bitumen-polymer compositions for the preparation of road surface binders
US4650820A · kind A · utility
37Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1983 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Nov 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a bitumen-polymer composition comprising 95 to 99% by weight of a bitumen and 1 to 5% by weight of a terpolymer having a melt index between 5 and 50 dg/min. The terpolymer comprises 88 to 98.7 mol % of units derived from ethylene; 1 to 10 mol % of units derived from at least one ester selected from the group consisting of alkyl acrylates and methacrylates, the alkyl group having from 1 to 6 carbon atoms; and 0.3 to 3 mol % of units derived from maleic anhydride. The bitumen-polymer composition is used in the preparation of road surface binders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.