Espe Stiftung & Co. Produktions- Und Vertriebs Kg

Thera Patent Gmbh & Co. Kg

Thera Patent Gmbh & Co Kg Gesellschaft Fur Industrielle Schutzrechte

Thera Patent Gmbh & Co.

Espe Stiftung & Co. Produktion- Und Vertriebs Kg

Thera Patent Gmbh & Co. Kg Gesellschaft Fur Industrielle

Kg Gesellschaft Fur Industrielle Schutzrechte

501 Espe Stiftung & Co. Produktions-und

Klaus Ellrich

Oswald Gasser

Rainer A Guggenberger

Peter Jochum

Erich Wanek

Gunther Lechner

Klaus-Peter Stefan

Wolf-Dietrich Zahler

Werner Schmitt

Peter Koran

Reinhold Nowak

Werner Zollner

Stefan Eidenbenz

Manfred Holupirek

John W McLean

Francois Roulet

Owen Makinson

Andreas Iburg

Michael J Noack

Dental compositions based on an bifunctional or polyfunctional acrylic-acid and/or methacrylic-acid esters, which contain an initiator system for radical polymerization and which additionally contain a compound of the general formula ##STR1## in which: Ar represents aryl or substituted aryl,

Dental compositions comprising bifunctional or polyfunctional

Dental compositions based on an at least bifunctional or polyfunctional acrylic-acid and/or methacrylic-acid esters, which contain an initiator system for radical polymerization and which additionally contain a compound of the general formula ##STR1## in which: Ar represents aryl or substituted aryl,

The invention relates to photopolymerizable dental compositions of ethylenically unsaturated monomers and/or polymers thereof which are curable in two curing steps. Besides being comprised of fillers, said compositions also contain a photoinitiator component I having a light absorption maximum of &lt;450 nm and a molar extinction of the light absorption of &lt;10 at wavelengths of 470 nm or higher, and a photoinitiator component II having a molar extinction of the light absorption of &gt;20 at least at one wavelength of at least &gt;450 nm.

Two-stage photocuring process for a dental composition

Dental material in powder form, process for its preparation and use

Curable compositions are described which contain a binder and a high propion of fillers having a mean grain size of &lt;50 .mu.m. The filler proportion of the curable compositions is so high that they cannot be used for the intended purpose because of their high viscosity However, they can be liquefied by exposure to oscillation in the frequency range of 20 Hz to 20 MHz with an amplitude of 1 .mu.m to 5 mm so that they are workable and can be employed for the intended purpose.

Dental compositions which can be prepared and worked by the action of

A method is provided for treating cataracts and other eye diseases, and includes the use of photopolymerizable compositions for preparing an intraocular-lens filling material which is used during an operation with an inserted intraocular-lens shell. The photopolymerizable compositions contain the following components:

Method of providing a composition for an eye

A method for bonding or potting substrates by means of cationically polymerizable masses being activated before joining or potting by irradiation with visible light and curing after joining or potting of the substrates without the irradiation being continued is described as well as an apparatus for executing this method. By irradiation with light having a wavelength of from 400 to 600 nm for photo-activation of said masses, a prolonged pot life of said masses without reducing their wetting ability during pot life is obtained such that the masses are unlimitedly applicable for more than 30, preferably more than 100 sec. after exposure is finished. The apparatus according to the invention comprises a source of irradiation which exclusively emits light having a wavelength of &gt;400 nm.

Method for bonding or potting substrates

Open-pored moldings containing the product of the foaming and setting of (a) an aluminum fluorosilicate glass, (b) at least one polycarboxylic acid with an average molecular weight of &gt;500, (c) a foaming agent, other than carbonates and/or hydrogen-carbonates, (d) optionally a chelating agent and (e) water, are suitable in particular as bone substitute material. Production is carried out by homogeneously mixing (a), (b), (c), optionally (d), and (e), then foaming, shaping and setting.

Open-pored moldings, a process for their production and use thereof

The invention relates to a process for the treatment of dental impressions of conventional molding material, in which the surface of the impressions is treated prior to filling with plaster with an aqueous solution which contains 0.01 to 10 % by weight of a fluorine compound. The detrimental effect which the surface-active substances adhering to the dental impressions have on the surface finish of the plaster models which are produced using the dental impressions is thus eliminated.

Process for the treatment of dental impressions

There is disclosed a polyether impression material containing

Polyether impression materials containing polyalkylene oxide derivatives

Photopolymerizable dental compositions are proposed which are curable with visible light and which apart from usual auxiliary substances and additives contain polymerizable monomers of the group of the poly-thiol compounds and of the group of the poly-ene compounds and a photoinitiator and which, in order to obtain a curing free from any smeary layer, contain at least 10% by weight poly-thiol compound(s), at least 10% by weight poly-ene compound(s) and 0.01 to 5% by weight of at least one acyl phosphine compound as photoinitiator. The compositions can advantageously be used as dental impression compositions.

(Polyene-polythiol) dental compositions curable with visible light

A polyether-impression material comprising components

Polyether-impression material and method for its preparation and use

A molding composition for making casting patterns is described containing

Molding composition for making casting patterns

Polymerizable compositions are described on the basis of (meth)acrylic acid esters which contain as filler a precipitation polymer that is formed from acrylic acid esters and/or methacrylic acid esters, and possibly other copolymerizable monomers, with 10 to 100 mol % of the (meth)acrylic acid esters being bi or polyfunctional. These compositions are particularly suitable as dental compositions.

Polymerizable compositions, process for the preparation thereof, and use

For the attachment of components using the SMT method a procedure is suggested in which the adhesive used is activated prior to fitting of the components to the circuit board by irradiation with light having a wavelength in the range of 200 to 600 nm to such an extent that the desired initial tackiness is maintained and there is no formation of skin on the surface of the adhesive. This makes it possible to cause the adhesive composition to fully cure in a shorter time and at lower temperature than has been possible so far without the wettability of the adhesive during the fitting of the components to the circuit board being impaired.

Growing community of inventors

Worthsee, Germany

Klaus Ellrich