Patent ID: 8871889

Claim:
An organopolysiloxane composition comprising: (a) a silicone base B comprising at least one polyorganosiloxane oil or gum C crosslinkable via a polycondensation reaction to form a silicone elastomer and (b) a catalytically effective amount of at least one polycondensation catalyst A having formula (I): in which: the R 1 , R 2 , R 3 , R 4 or R 5 radicals, which may be identical or different, represent, independently of one another, a linear or branched monovalent alkyl group, a cycloalkyl group, or a (cycloalkyl)alkyl group, the R 1 , R 2 , R 3 or R 4 radicals may be linked in pairs so as to form a 3-, 4-, 5-, 6- or 7-membered aliphatic ring optionally substituted with one or more substituents, and with the proviso that: (1) the R 1 , R 2 , R 3 , R 4 and R 5 radicals do not comprise a silicon atom, (2) the catalyst does not comprise a compound of formula (A1) to (A3), and (3) the composition does not contain any metal catalyst.