Bayer Aktiengesellschaft

Voigt, Reiner

Schwabe, Peter

Schlak, Ottfried

Reiner Voigt

Peter Schwabe

Ottfried Schlak

Jens Winkel

Hanns P Muller

Hans-Heinrich Moretto

Lothar Puppe

Michael Walkowiak

Robert Friebe

Hans-Hermann Schulz

Dieter Wrobel

Bernhard Leusner

Otto-Christian Geyer

Manfred Borgardt

Gottfried Knispel

Bernard Munchenbach

Norbert Weber

Hans-Herrmann Schulz

A catalyst/cross-linking agent composition, containing at least one

Catalyst/cross-linking agent compositions, a method for their

The present invention relates to a transparent material based on addition-crosslinking polysiloxanes, which is used as occlusal print for molding side teeth composites.

Transparent material for dental applications

The invention relates to a pasty two-component alginate-based material which is used as an impression material in the dental sector.

Alginate impression compositions

A method of making a dental impression which comprises applying to the structure of which an impression is to be made a special prepolymer. The prepolymer is composed of units of at least one macrodiol, at least one aliphatic polyisocyanate, and an unsaturated monoalcohol as chain terminator, wherein the average functionality of the prepolymer based on the unsaturated groups is &gt;2.

Photosetting impression materials

The present invention relates to optically clear polysiloxane-based compositions which are employed, in particular, for the production of contact optical articles such as contact lenses, scleral lenses and intraocular lenses.

Optically clear silicone compositions

In a silicone impression and duplicating composition which undergoes crosslinking at ambient temperature by an addition reaction, comprising (a) an organopolysiloxane possessing two or more vinyl groups in the molecule, (b) optionally an organopolysiloxane without reactive groups, (c) an organopolysiloxane possessing two or more Si-H groups in the molecule, (d) a catalyst, (e) a filler and, (f) optionally an auxiliary and/or colorant, the improvement wherein polysiloxane components (a)-(c) contain not more than about 1.5% by weight of volatile oligomers, whereby the dimensional stability of impressions is improved.

Dimensionally stable impression compositions

An addition or condensation cross-linking molding or lining compound based on silicones comprising

Silicone molding compounds

Colored silicone composition

In the making of an impression wherein an impression material comprising an alginate, a pulverulent material and a dust-reducing coating is mixed with water to form a paste, the paste is positioned about a mold member, and permitted to harden, the improvement wherein such coating comprises an iso-paraffin. There is reduced dusting.

Dust-free alginate impression materials

The present invention relates to the use of paraffin waxes or microwaxes in silicone pastes, in particular in kneadable compositions for the production of accurate impressions of teeth. The silicone pastes are preferably cold-vulcanizing two-component silicone rubber systems which are known per se and in which two pastes are mixed and then crosslink after about 2-5 minutes at room temperature.

Use of paraffin waxes or microwaxes for silicone pastes, and the

In the making of a shaped structure by mixing

Modified fillers for silicone dental pastes

In a polysiloxane-based composition which crosslink by addition, comprising (a) an organosiloxane with two or more vinyl groups in the molecule, (b) and organo-hydridopolysiloxane, as a crosslinking agent, (c) a catalyst for accelerating the addition reaction, (d) a hydrophobic filler and (e) optionally a dyestuff pigment, the improvement which comprises (f) hydrogenated castor oil as a structuring agent. The composition is highly viscous and will not run but can readily be stirred.

Silicone pastes formulated with a structural viscosity for impression

The invention relates to thixotropic formulations of silicone pastes for the production of exact impressions of teeth and mucous membrane.

Thixotropic formulations of silicone pastes for impressions of teeth and

In a polysiloxane-based dental composition which crosslinks by an addition reaction and hardens at room temperature, the composition comprising

Growing community of inventors

Leverkusen, Germany

Reiner Voigt