METHOD FOR PREPARATION OF A RUBBER COMPOSITION COMPRISING AN EPOXIDE ELASTOMER CROSS-LINKED BY A POLYCARBOXYLIC ACID

摘要

The present invention relates to a process for preparation of a rubber composition made from at least one majority elastomer comprising epoxide functional groups, a reinforcing filler and a cross-linking system of said elastomer comprising a polycarboxylic acid and an imidazole, characterized in that the composition is prepared via a thermal mechanical mixing phase in the course of which all of the ingredients other than the cross-linking system are introduced together with, optionally, a part of the cross-linking system or all of the cross-linking system, at low temperature, i.e. at a maximum temperature of between 110 °C and 130 °C, the temperature at which the mixing is stopped.