Fluoroelastomer composition

16) A (per)fluoroelastomer composition [composition (C)] comprising:

• a) at least one (per)fluoropolyether compound comprising a plurality of nitrile groups [compound (CN-PFPE)];
• b) at least one bis-amino(thio)phenol compound [compound (AP)] of formula:
• wherein:
• A is selected among:
• —SO2—, —O—, —C(O)—, divalent hydrocarbon groups of 1 to 10 carbon atoms, said hydrocarbon groups;
• each of E, equal or different at each occurrence, is oxygen or sulphur;
• —NH2 groups and EH groups are interchangeably in ortho, meta or para positions with respect to the group A, and
• —NH2 groups are in ortho with respect to EH groups.

26) A process for the manufacture of a (per)fluoropolyether-based thermoset, comprising:

• a) mixing at least one (per)fluoropolyether compound comprising a plurality of nitrile groups [compound (CN-PFPE)] with at least one bis-amino(thio)phenol compound [compound (AP)] of formula:
• thus obtaining a (per)fluoroelastomer composition [composition (C)],
• wherein:
• A is selected among:
• —SO2—, —O—, —C(O)—, divalent hydrocarbon groups of 1 to 10 carbon atoms;
• each of E, equal or different at each occurrence, is oxygen or sulphur,
• —NH2 groups and EH groups are interchangeably in ortho, meta or para positions with respect to the group A, and
• —NH2 groups are in ortho with respect to EH groups.
• b) heating said composition (C) to a temperature of at least 30° C., so as to obtain the (per)fluoropolyether-based thermoset.