Vinylsilicone pastes for dental impression
AssigneeBayer Aktiengesellschaft
InventorsLothar Puppe, Reiner Voigt, Manfred Borgardt, Hans-Heinrich Moretto, Bernard Munchenbach
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Abstract
In a polysiloxane-based dental composition which crosslinks by an addition reaction and hardens at room temperature, the composition comprising (a) an organopolysiloxane with at least two vinyl groups in the molecule, (b) an organohydridopolysiloxane, (c) a catalyst to accelerate the addition reaction, and (d) a hydrophobic filler, the improvement which comprises including therein (e) an aluminosilicate containing finely divided palladium. This removes any by-product hydrogen and results in a smoother surface on any plaster of Paris moldings made from the hardened composition.
Claims5
In a polysiloxane-based dental composition which crosslinks by an addition reaction and hardens at room temperature, the composition comprising
- (a) an organopolysiloxane with at least two vinyl groups in the molecule,
- (b) an organohydridopolysiloxane,
- (c) a catalyst to accelerate the addition reaction, and
- (d) a hydrophobic filler, the improvement which comprises including therein
- (e) an aluminosilicate containing finely divided palladium.
Dependencies are inferred from the claim text.