Rubber composition based on a modified diene elastomer
US12129316B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2019 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/0025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A rubber composition based at least on a reinforcing filler comprising a content of silica of greater than or equal to 80 phr, preferably of greater than or equal to 100 phr, and on an elastomer matrix comprising a content of a modified diene elastomer of greater than or equal to 75 phr is provided. The modified diene elastomer comprises macromolecules comprising, within their structure, an n-functional branching unit, n having a value of at least 1 and of at most 9, preferably of at most 6, consisting of a group comprising at least two silicon atoms which are substituted by elastomer branches and connected together via a group comprising at least one nitrogen atom, the bonds between silicon and nitrogen atoms being produced via a spacer group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.