Espe, Fabrik Pharmazeutischer Praparate Gmbh

Espe Stiftung & Co. Produktions- Und Vertriebs Kg

Thera Patent Gmbh & Co. Kg

Espe Stiftung & Co. Produktions

Wolf-Dietrich Zahler

Peter Jochum

Oswald Gasser

Werner Schmitt

Klaus Ellrich

Robert Purrmann

Gunther Lechner

Rainer A Guggenberger

Heijo Hubner

Manfred Holupirek

Christian Herzig

There is disclosed a polyether impression material containing

Polyether impression materials containing polyalkylene oxide derivatives

A polyether-impression material comprising components

Polyether-impression material and method for its preparation and use

An ionogenic compound, soluble or dispersible in aziridine compounds is utilized for delaying the polymerization of aziridine compounds initiated by a sulfonium salt. Said ionogenic compounds contain an anion which is more nucleophilic than the anion present in the sulfonium salt employed. Moreover, a preparation for dental purposes is described which contains these components.

Dental composition containing an aziridine compound and method of

(Methy)acrylic acid esters of the general formula

(Meth)acrylic acid esters and the use thereof for preparing dental

An improved dental composition having shortened hardening time and after hardening increased compressive strength and abrasion resistance, including a radical-inducing compound and a polymerizable acrylic or methacrylic acid ester or diester compound with at least 20 percent by weight of the polymerizable compound being the diacrylic or dimethacrylic acid ester of bishydroxymethyltricyclo [5.2.1.0.sup.2,6 ]-decane. Other monofunctional or difunctional acrylic or methacrylic acid esters as well as fillers, pigments and stabilizers can be included.

Dental compositions comprising acrylic esters of tricyclo

Novel bromine-containing compounds of the formula ##STR1## in which R is an alkylidene radical having 1 to 6 carbon atoms, a cycloalkylidene radical or a SO.sub.2 radical, R' is an alkylene radical having 2 to 6 carbon atoms or a cycloalkylene radical and Y is an acyl radical of a carboxylic acid having 2 to 6 carbon atoms and optionally bearing an aromatic substituent, and x is 1 or 2 and y is 0, 1 or 2, which are particularly useful for the preparation of dental replacement parts and dental models when mixed with a substance that catalyzes the polymerization of the compounds.

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Hechendorf, Germany

Wolf-Dietrich Zahler