Patent ID: 8426546

Claim:
An organopolysiloxane composition, comprising a silicone base B capable of curing via polycondensation reaction into a silicone elastomer and a catalytically effective amount of at least one polycondensation catalyst which is a metal complex or salt A of formula (1) below: [M(L 1 ) r1 (L 2 ) r2 (Y) x ] (1) in which: r1≧1, r2≧0 and x≧0; the symbol M represents a metal selected from the group constituted by: scandium, ytterbium, copper, silver and bismuth; the symbol L 1 represents a ligand which is a sulfonate anion and when r1≧2, the symbols L 1 being identical or different; the symbol L 2 represents an anionic ligand which is different from L 1 and when r2≧2, the symbols L 2 being identical or different; and the symbol Y represents a neutral ligand and when x≧2, the symbols Y being identical or different.