Patent ID: 8461283
Filing Date: 2013-06-11
Classification: B01J,C08K

Abstract:
1. A single component organopolysiloxane composition, comprising a silicone base B capable of curing via polycondensation reaction into a silicone elastomer comprising at least one linear polyorganosiloxane oil C capable of crosslinking via polycondensation into an elastomer functionalized at its ends by hydrolysable radicals obtained by condensation of a precursor bearing hydroxyl functional groups with a crosslinking silane bearing hydrolysable radicals, the linear polyorganosiloxane oil C having functionalized ends of alkoxy, oxime, acyl and/or enoxy type, and a catalytically effective amount of at least one polycondensation catalyst which is a metal complex or salt A of formula (1), (2) or (3) below: in which: r1≧1, r2≧0 and x≧0; the symbol M represents a metal selected from the group consisting of: copper, silver, boron, scandium, cerium, ytterbium, bismuth, molybdenum, germanium and manganese; the symbol L the symbol L the symbol Y represents a neutral ligand and when x≧2, the symbols Y are identical or different; in which: r3≧1; r4≧0 and x′≧0; the symbol L the symbol L the symbol Y′ represents a neutral ligand and when x′≧2, the symbols Y′ are identical or different; and in which: r5≧1; r4≧0 and x′≧0; the symbol L the symbol L the symbol Y′ represents a neutral ligand and when x′≧2, the symbols Y′ are identical or different.