Process for the preparation of polymer/bitumen compositions and their use in coatings
US6087420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a method for producing bitumen/polymer compositions which consists of contacting, between 100.degree. C. and 230.degree. C. and under agitation, a bitumen or a mixture of bitumens with at least one styrene and butadiene copolymer having a global butadiene content ranging between 50% and 95 wt. % and a content of butadiene 1,2 double-bond structural units ranging between 12% and 50 wt % of the copolymer, and, preferably, also a sulphuring coupling agent or a functionalizing agent. The bitumen/polymer compositions are usable, directly or after dilution, for forming bitumen/polymer binders for surfacing materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.