Non-gellable bitumen/polymer compositions
US5756565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Non-gellable, high temperature storage-stable bitumen/polymer compositions are provided and which are produced by stirring a sulphur-cross-linkable elastomer, an antigelling adjuvant and a sulphur-donating coupling agent into a bitumen or bitumen mixture at 100.degree.-230.degree. C. The antigelling adjuvant has the formula R--X wherein R is a C.sub.2-50 monovalent organic radical and X is a carboxylic acid, sulfonic acid or phosphoric acid group. The bitumen-polymer compositions may be used directly or in diluted form in a bitumen or bitumen mixture to form bitumen/polymer binders for producing road surfaces, coating materials or sealing materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.