Silicone composition that can be cross-linked by means of dehydrogenative condensation in the presence of a carbene-type catalyst

A siloxane composition X, which can be polymerized or crosslinked by means of dehydrogenative condensation, comprising:

• at least one organosiloxane monomer, oligomer and/or polymer B having, per molecule, at least one ≡SiH reactive unit;
• at least one organosiloxane monomer, oligomer and/or polymer C having, per molecule, at least one SiOH reactive unit;
• a catalytic composition Y′ comprising:
• a) a catalytically effective amount of at least one polycondensation catalyst A which is a carbene of formula (I) below:
• with:
• the symbol X being chosen from the group consisting of the following atoms or groups:
• —O—, —S—, —N(R)— and —P(R)— with R being a C1-C30 group,
• R1, R2 and R3 being identical or different, optionally substituted, C1-C30 groups optionally comprising at least one atom selected from the group consisting of:
• S, P, Si, N and O, and
• the symbols X, R1, R2 and R3 taken in pairs can form a 5-, 6- or 7-membered ring, and
• b) at least one solvent comprising at least one alcohol G,
• optionally at least one polyorganosiloxane resin D;
• and
• optionally at least one filler E.