Rubber composition comprising a citraconimidomaleimide

A process for preparing a rubber composition usable for the manufacture of tires and having an improved reversion resistance, this composition being based on at least one diene elastomer, at least one reinforcing filler and a vulcanization system, said process comprising:

• incorporating in a diene elastomer, during a first step referred to as “non-productive”, at least one reinforcing filler, by thermomechanically kneading the entire mixture, in one or more stages, until a maximum temperature of between 110° C. and 190° C. is reached;
• cooling the entire mixture to a temperature of less than 100° C.;
• then incorporating, during a second step referred to as “productive”, the vulcanization system;
• and
• kneading the entire mixture until a maximum temperature of less than 110° C. is reached,
• wherein there is further incorporated, during any one of the steps of the process, at least one citraconimidomaleimide compound of the formula (I) (R=radical consisting of carbon, hydrogen and optionally one or more heteroatoms selected from the group consisting of O, N and S):