Ethylene and isoprene copolymer
US12043680B2 · kind B2 · utility
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Key dates
| Filing date | May 27, 2019 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Nov 2, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer of ethylene and of isoprene, which comprises from 10 to 35 mol % of isoprene units, at least 70% of which are in the 3,4 configuration and a portion of which is in the 1,2 configuration is provided. A copolymer of this type with a reduced crystallinity is synthesized with a much higher productivity than its homologues of ethylene and of butadiene, and also confers improved curing properties on rubber compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.