Patent ID: 8470951

Claim:
A siloxane composition X which can be polymerized and/or crosslinked by dehydrogenative condensation, the siloxane composition X comprising: at least one organosiloxane monomer, oligomer and/or polymer B having, per molecule, at least one reactive ≡SiH unit; at least one organosiloxane monomer, oligomer and/or polymer C having, per molecule, at least one reactive ≡SiOH unit; a catalytically effective amount of at least one dehydrogenative condensation catalyst A which is a metal complex or salt of formula (I): [Fe(L 1 ) I1 (L 2 ) I2 ] (I) in which: I 1 ≧1, I 2 ≧0 and I 1 +I 2 =3; the symbol L 1 represents a β-dicarbonyl ligand selected from the group consisting of a β-dicarbonylato anion or the enolate anion of a β-dicarbonyl compound, and an acetylacetato anion derived from a β-ketoester, with the additional condition that, when I 2 ≧2, the symbols L 1 are identical or different; with the additional condition that, when I 1 =3, then the symbol L 1 is not acetylacetonate (acac), and the symbol L 2 represents an anionic ligand which is different than L 1 and, when I 2 =2, the symbols L 2 are identical or different; optionally at least one polyorganosiloxane resin D; and optionally at least one filler E.