COPOLYMERE D'ETHYLENE ET D'ISOPRENE

• Main Authors: TRIGUEL, Aurélie, THUILLIEZ, Julien, MORESO, Emma, ARAUJO DA SILVA, José-Carlos, LAFAQUIERE, Vincent
• Format: Patent
• Language: French
• Published: 13.12.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

La présente invention concerne un copolymère d'éthylène et d'isoprène qui comprend de 10 à 35% en mole d'unité isoprène dont au moins 70% sont sous la configuration 3,4 et une partie est sous la configuration 1,2. Un tel copolymère qui présente une cristallinité réduite est synthétisé avec une productivité bien plus élevée que ses homologues d'éthylène et de butadiène. 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.