The invention concerns a method of modifying an epoxidised natural rubber that helps improve grafting performance. The method comprises: - reacting an epoxidised natural rubber with a system consisting of - a carboxylic acid of general formula (I) in which R represents a group likely to interact with a reinforcing filler and - an imidazole of general formula (II) in which, - R1 represents a hydrocarbon group or a hydrogen atom, - R2 represents a hydrocarbon group, R3 and R4 represent, independent of each other, a hydrogen atom or a hydrocarbon group, or indeed R3 and R4 form a ring together with the carbon atoms of the imidazole ring to which they bond, - then curing at a temperature greater than 120°C.
CAOUTCHOUC NATUREL ÉPOXYDÉ ET MODIFIÉ
MODIFIED EPOXIDISED NATURAL RUBBER
MODIFIZIERTER EPOXIDIERTER NATURKAUTSCHUK
2018-07-25
Patent
Electronic Resource
French
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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