Diene rubber/polypropylene thermoplastic elastomer copolymer, compositions containing same, and preparation method
US10513150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2016 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Jun 16, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2500/21
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to comb block copolymers, combining an elastomeric backbone and rigid pendent blocks and thus having thermoplastic elastomer properties. The invention targets in particular comb block copolymers which may be used as a material as is.According to the invention, the comb block copolymer is a diene/polypropylene thermoplastic elastomer copolymer, characterized in that it consists of a backbone, said backbone being derived from a diene elastomer, and in that it comprises from 5% to 50% by weight, relative to the total weight of the copolymer, of pendent semicrystalline polypropylene groups distributed along the backbone.Another subject of the invention is the process for preparing same, and the compositions comprising same.Finally, a subject of the invention is a tire, one of the constituent elements of which comprises such a composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.