The invention relates to a method for treating a natural rubber, comprising the following steps: adding to the natural rubber one or more ammonia-derived compounds, said natural rubber being made up of at least 80 wt % of cup lump natural rubber and 0 to 20 wt % of natural latex rubber, relative to the total weight of natural rubber, said one or more ammonia-derived compounds being selected among the compounds with formula XNH2 and the salts thereof, wherein X is a group selected among the C1-C4 hydroxyl and hydroxyalkyl groups, and said one or more compounds being provided in an amount varying from 0.2 to 2.2 g per kilogram of natural rubber, and then subjecting the natural rubber to which the one or more ammonia-derived compounds have been added to machine work at a temperature of at least 100°C.
PROCEDE DE PREPARATION D'UN CAOUTCHOUC NATUREL
2018-01-19
Patent
Electronic Resource
French
IPC: | C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / 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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |