Terpolymer of ethylene and 1,3-dienes
US12391777B2 · kind B2 · utility
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Key dates
| Filing date | Sep 17, 2020 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Dec 21, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A terpolymer of ethylene, of a first 1,3-diene having from 4 to 6 carbon atoms and of a second 1,3-diene of formula CH2═CR-CH═CH2 is provided. The terpolymer contains more than 50 mol % of ethylene units and at least 1 mol % of units of the second 1,3-diene, the symbol R representing a hydrocarbon chain having from 3 to 20 carbon atoms. Such a polymer gives an improved compromise between its ethylene content, its stiffness and its degree of crystallinity for use in tires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.