Bayer Aktiengesellschaft

Michael Walkowiak

Carlhans Suling

Hans-Hermann Schulz

Wolfgang Podszun

Karl G Metzger

Michael Preiss

Bernhard Leusner

Hans-Bodo Konig

Wilfried Schrock

Gerhard Balle

Wolfgang Krohn

Hans H Schulz

Robert Schmitz-Josten

Manfred Borgardt

Hans J Rosenkranz

Bruno Bomer

Reiner Voigt

Werner Finger

Bernd W Leusner

Fritjof Bley

Klaus Nehren

The use of microporous inorganic fillers in polymerizable compositions, in particular in the dental field, characterized in that the fillers have

Porous fillers in polymerizable compositions

A dental composition suitable for being polymerized to a dental prosthesis approximately comprising by weight

Polymerizable dental compositions and molded dental articles produced

In a photopolymerizable composition comprising

Photopolymerizable dental compositions

The invention provides dental materials in paste form consisting essentially of (a) 18 to 50% by weight of a polymerizable binder, (b) 20 to 65% by weight of a crosslinked bead polymer with an average particle size of 5 to 150 .mu.m and (c) 5 to 45% by weight of glass beads with an average particle size of 5 to 80 .mu.m. The pastes of the invention are outstandingly suitable as a dental filling material.

Dental materials based on organic plastics in paste form

Polymer beads having an average bead diameter of from 5 to 500 .mu., consisting of an inorganic fine-particled filler and polymerized (meth)acrylic acid esters, and a process for their production, wherein a mixture of monomer and, optionally, polymer which is soluble in the monomer, which has a viscosity of from 0.1 to 10 Pa.s, measured at the dispersion temperature, and filler is suspended in an aqueous medium in the presence of dispersants and is polymerized.

Filler-containing bead polymers

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

The invention includes dental materials based on organic plastics in paste form, comprising at least one phase consisting essentially of finely divided, crosslinked plastics which contain copolymerized ester(s) of methacrylic acid to the extent of at least 50% by weight, and the second phase consisting essentially of ester(s) of methacrylic acid to the extent of at least 50% by weight. The materials can be used for making prostheses, crowns, bridges, artificial teeth, dental fillings, etc.

Dental material based on crosslinked plastic and polymerizable binder

The invention relates to the provision of dental compositions containing a polymerizable (meth)acrylic acid ester of the formula Id as defined herein and includes methods for filling or repairing teeth in warm-blooded animals.

Dental compositions

A dental material is provided based on organic plastics in paste form, which consists essentially of (a) a polymerizable binder, (b) a crosslinked bead polymer and (c) a fine-particled inorganic filler.

The invention provides dental materials which are opaque to X-rays and are based on organic plastics in paste form, which comprises (a) a polymerizable binder, (b) a crosslinked bead polymer and (c) an X-ray contrast medium. The materials can also contain as an additional component (d) a fine-particled inorganic filler which is not opaque to X-rays. The materials are useful, inter alia, for filing dental cavities.

Dental materials which are opaque to X-rays and are based on organic

The invention relates to bead polymers, useful in the provision of dental articles and made by bead polymerizing a diamine-lengthened polyurethane and a methacrylate. Also included in the invention are the dental articles made using said bead polymers.

Shaped dental articles

Bead polymers having a mean bead diameter of from 10 to 200.mu. of one or more polymerized viscous methacrylates and/or dimethacrylates having a viscosity of from 0.5 to 500 Pa.s and, optionally, up to 20% by weight of one or more other vinyl monomers.

Bead polymers of viscous dimethacrylates

A two-phase bead polymer having an average bead diameter of 10 to 120.mu., and comprising (A) 88 to 99.5% by weight of a polymer of polymerized units of at least one methacrylic acid ester containing from 1 to 10 carbon atoms in the aliphatic, saturated alcohol component, the methacrylic ester polymer, optionally, containing up to 30% by weight of copolymerized units of at least one monomer selected from acrylic acid esters containing from 1 to 10 carbon atoms in the aliphatic saturated alcohol component, hydroxyalkyl esters of methacrylic acid containing from 2 to 4 carbon atoms in the alkyl group, styrene, vinyl acetate, (meth)acrylamide, (meth)acrylic acid and/or itaconic acid, and (B) 0.5 to 12% by weight of a polyurethane.

Process for the production of bead polymers

A two-phase bead polymer having an average bead diameter of from 10.mu. to 150.mu. comprising

The invention provides impression materials for use in dentistry comprising the reaction product of (a) a diisocyanate or triisocyanate, (b) a dihydroxy compound having a molecular weight of from 300 to 10,000 and (c) an unsaturated monohydroxy compound. The invention also includes processes for preparing said impression materials.

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Leverkusen, Germany

Michael Walkowiak