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US 7,745,531 B2Granted
Crosslinkable compositions based on organosilicon compounds
AssigneeWacker Chemie AG
InventorsPeter Schoeley, Gabriele Dineiger, Uwe Scheim
Life of this patent
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Abstract
Crosslinkable compositions based on organosilicon compounds with a very high storage stability contain fine-particle metacarbonate. Storage stability of the composition is increased as compared to conventional forms of carbonates.
Claims20
A crosslinkable, storage stable, moisture-curable RTV-1 organopolysiloxane composition, comprising
- (A) at least one organosilicon compound of the formula
- Y3-fRfSi—(SiR2O)e—SiRfY3-f (II)
- where
- R each are identical or different unsubstituted or substituted hydrocarbon radicals which are optionally interrupted by non-adjacent oxygen atoms,
- Y each are identical or different and are a hydrolyzable radical —OR,
- e is from 30 to 5000, and
- f is 0, 1, or 2,
- (B) a calcium carbonate filler consisting of fine-particle metacarbonate, and
- (C) one or more crosslinking agents, wherein the storage stability of the storage stable composition is higher than an otherwise similar composition wherein the calcium carbonate filler is not calcium metacarbonate.
6 more elements
Dependencies are inferred from the claim text.