Patent ID: 8680216

Claim:
A condensation-crosslinking two-component RTV-2 silicone composition, wherein one of the two components is a hardener composition comprising: (A) at least one crosslinker which is an organosilicon compound of the formula (I) Z c SiR 2 (4-c) (I), where the radicals R 2 are identical or different and are, independently of one another, monovalent, optionally substituted hydrocarbon radicals optionally interrupted by oxygen atoms, the radicals Z are identical or different and are, independently of one another, hydrolyzable radicals, and c is 3 or 4, and also partial hydrolysates thereof, (B) at least one catalyst selected from the group consisting of carboxylates of cerium, zirconium, bismuth, and lithium, (C) at least one extender polymer which is an organosilicon compound whose chemical composition corresponds to the formula (II) (T+Q)/(M+D+T+Q)≧0.25 (II) wherein M units correspond to monofunctional silicon atoms, D units correspond to bifunctional silicon atoms, T units correspond to trifunctional silicon atoms, Q units correspond to tetrafunctional silicon atoms, wherein extender polymer (C) contains no Q units.