Bitumen-polymer composition and method for the preparation thereof
US10759967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2016 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Nov 30, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a bitumen-polymer composition includes mixing and heating a base bitumen-polymer with at least: one compound of general formula (I): R1—(COOH)z where R1 is a linear or branched, saturated or unsaturated, hydrocarbon chain, including 4 to 68 carbon atoms, and z is an integer from 1 to 4, and a compound (II) selected from the compounds able to react according to an acid-base reaction, an amidation reaction or an esterification reaction, with the carboxylic acid group of the additive (I). Also set forth is the composition obtained by the method and a kit composed of a bitumen-polymer composition including an additive (I), in the form of blocks, and a capsule comprising a compound (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.