Back to results
US 2017/0283559 A1Published application
Organopolysiloxane compositions which can be crosslinked by means of a condensation reaction
AssigneeWacker Chemie AG
InventorsTorsten SIXT, Franz NEUHAUSER
Life of this patent
Estimating the term…
Abstract
Moisture curable elastomer compositions are highly suitable for use as sealants, and initially contain an organopolysiloxane having condensable groups, a tri-acyloxy functional organosilicon compound, and as fillers, anhydrite and silica. The compositions have very low modulus and accommodate high joint movement, while being storage stable
Claims10
-6. (canceled)
An organopolysiloxane composition crosslinkable by condensation reaction, and produced from a composition comprising:
- (1) at least one organopolysiloxane containing condensable end groups,
- (2) at least one organosilicon compound containing at least three acyloxy groups bonded directly to silicon,
- (3) one or more condensation catalysts,
- (4) anhydrite, and
- (5) silica, in amounts of at least 1 and not more than 15 parts by weight, based on 100 parts by weight of organopolysiloxane (1),
- with the proviso that
- (6) no kaolin is used,
- (7) any further fillers are used in amounts of at most 25 parts by weight based on 100 parts by weight of organopolysiloxanes (1), and
- (8) optionally further substances, useful in compositions crosslinkable by condensation reaction and which are different from the constituents (1) to (7).
6 more elements
Dependencies are inferred from the claim text.