Technische Universitāt Wien

Chemie Linz Gesellschaft M.b.h.

Ivoclar Vivadent Ag

Chemie Linz Gmbh

Technische Universitat

Chemie Holding Aktiengesellschaft

Chemie Linz Gesellschaft G.m.b.h.

Heinrich Gruber

Robert Liska

Gerd Greber

Jürgen Stampfl

Marcel Sychra

Norbert Moszner

Ulrich Salz

Monika Schuster

Franz Varga

Afschin Hassanein

Beate Ganster

Volker Rheinberger

Urs Karl Fischer

Alexander Poschalko

Wolfgang Wimmer

Simone Knaus

Gerald Ullrich

Gerhard Greber, Deceased

Gerd Greber, Deceased

Thomas Verdianz

Christian Heller

Robert Inführ

Helga Lichtenegger

Stefan Baudis

Claudia Dworak

Günter Weigel

Helga Bergmeister

The present invention relates to a polymerization-curable composition for the preparation of biodegradable, biocompatible, cross-linked polymers on the basis of polyvinyl alcohol comprising: 5 to 100% by weight of (a) vinyl ester monomer(s) of one of the general formulas (I) to (III): wherein X is oxygen, sulfur, nitrogen, or phosphorus; n is 1 to 1000, at least 20% of the n being &#x2267;2; the Rare selected from hydrogen; straight, branched or cyclic, saturated or unsaturated, n-valent hydrocarbon groups having 1 to 30 carbon atoms, which optionally have heteroatoms and are optionally substituted with one or more substituents selected from &#x2014;OH, &#x2014;COON, &#x2014;CN, &#x2014;CHO, and &#x2550;O, and n-valent radicals of biodegradable, biocompatible oligomers and polymers; m is an integer from 1 to 5; the Rare selected from hydrogen, &#x2014;OH, &#x2550;O, and the options listed for R; and the Rare selected from hydrogen, &#x2014;OH, and the options listed for R; 0 to 50% by weight of ethylenically unsaturated co-monomers; 0 to 10% by weight of (a) polymerization initiator(s); and 0 to 95% by weight of solvent(s).

Composition that can be cured by polymerisation for the production of biodegradable, biocompatible, cross-linkable polymers on the basis of polyvinyl alcohol

The invention relates to polymerizable compositions which comprise 10-80% by weight of a reactive diluent based on acrylic acid or methacrylic acid derivatives, and 10-50% by weight of a monomer of the indicated chemical formula which is liquid or which can be dissolved in the formulation. The formula may contain amino acid residues or peptide sequences, especially such that are specific of the collagen. These structural elements allow the enzymatic degradation of the polymers of the inventive composition.

Polymerized molded body

The invention relates to a method for producing three-dimensional objects, comprising producing a three-dimensional structure by sequential selective curing of layers of a composition curable with visible and/or ultraviolet light into a solid polymeric material by sequential exposure of the individual layers to UV and/or visible light, whereafter a three-dimensional object is produced by use of the three-dimensional structure thus formed, followed by removing the three-dimensional structure from or of the three-dimensional object, characterized in that removing the three-dimensional structure is accomplished by chemically cleaving the polymeric material as well as simultaneously or subsequently dissolving the material in a solvent or mixed solvent and/or melting the material.

Rapid prototyping method and radiation-curable composition for use therein

Polymerizable dental material which contains at least one radically-polymerizable monomer and at least one bisacylphosphine oxide of the Formula I, in which Ris a linear or branched Cto Calkyl residue, which can be interrupted by one or more O atoms, PG-Y&#x2014;R&#x2014;X&#x2014; or a substituted or unsubstituted, aromatic Cto Cradical; Ris absent or a linear or branched Cto Calkylene radical, which can be interrupted by one or more O atoms; Ris H, a linear or branched Cto Calkyl residue or PG-Y&#x2014;R&#x2014;X&#x2014;; Ris a linear or branched C-Calkyl or &#x2014;O&#x2014;C-Calkyl residue; Ris H or PG-Y&#x2014;R&#x2014;X&#x2014;; Ris H or PG-Y&#x2014;R13 X&#x2014;; PG is a polymerizable group; X is absent, O or S; Y is absent, O, S, an ester, amide or urethane group; the bisacylphosphine oxide having at least one PG-Y&#x2014;R&#x2014;X group and X and/or Y being absent if Ris absent.

Photopolymerizable dental materials with bisacylphosphine oxides as initiators

The invention relates to methods for the production of polymer carrier materials for solid phase synthesis, particularly for peptide synthesis. (Meth)acrylamide derivatives based on carbon hydrates, which can also contain other protective groups, are polymerized by means of suspension polymerization in an aqueous phase, optionally with the addition of pore-forming additives, and subsequently the protective groups are fully or partially cleaved. It is thus possible to obtain polymer carriers whose morphology (particle size, porosity), degree of cross-linking and swelling capability in aqueous and organic media can be adjusted in a targeted manner and whose reactive groups offer multiple opportunities for the immobilization of anchor groups and protective groups. The hydroxyl groups of the polymer carrier can be activated according to usual methods of solid phase synthesis.

Methods for the production of polymer carrier materials based on carbon hydrate-bis(meth)acryl-amides

Composition with at least one polymerizable binder and at least one polymerization initiator, which contains at least one acylgermanium compound according to general Formula (I), in which Ris a substituted or unsubstituted C-alkyl radical or an acyl group; Rand Rare H, an acyl group or have one of the meanings given for R; Ris a branched or linear C-alkyl radical which can be unsubstituted or substituted one or more times by &#x2014;O&#x2014;, &#x2014;NH&#x2014;, &#x2014;NR&#x2014;, &#x2014;S&#x2014; or interrupted by other groups, trimethylsilyl, hal-(CH)Si&#x2014;[OSi(CH)], (CH)Si&#x2014;[OSi(CH)]&#x2014;, &#x2014;COOH, &#x2014;COO&#x2014;R, &#x2014;CO&#x2014;NRR, &#x2014;CO-vinyl, &#x2014;CO-phenyl, phenyl-C-alkyl, phenyl, naphthyl or biphenyl, Ccycloalkyl, a 5 or 6-membered O, S or N-containing heterocyclic ring, halogen, OH, an aromatic Cradical which can be substituted or unsubstituted and/or interrupted by O, S or &#x2014;NR&#x2014;, or a branched, cyclic or linear Calkyl, -alkenyl, -alkoxy or -alkenoxy radical; m is 1, 2 or 3; n is 0 or 1 and p is 0 or 1; wherein in each case two of the radicals R, R, Ror Rcan be connected to each other accompanied by the formulation of a 5 to 8 member ring; and the use of acylegermanium compounds of Formula (I), for example, as initiator for radical polymerization.

Polymerizable compositions with acylgermanium compounds

Benzophenone iminodiimides of the formula I ##STR1## which Y denotes hydroxyl or carboxyl, R.sub.1 denotes the optionally substituted radicals alkylene, phenylene or benzylidene, R.sub.2 denotes the radicals OH, substituted or unsubstituted alkyl or NH--CO--NHR.sub.3 and R.sub.3 denotes the radicals H, alkyl, phenyl or benzyl, processes for their preparation and polymers prepared therefrom.

Benzophenone iminodiimides and heat-stable polymers derived therefrom

Heat-stable polyimides and polyamideimides with modified benzhydrol structural elements and a process of preparing thereof; wherein the polyimides and polyamideimides are obtained by reacting 3,3'4,4'-benzhydroltetracarboxylic acid dimethyl ester a) with only a diamine and then cyclized to give polyimides or b) with a diamine and with trimellitic, phthalic-or isophthalic acid (or the anhydrides, acid chlorides, anhydride chlorides or esters) and is then cyclized to give polyamideimides.

Heat-stable polyimides and polyamide-imides with modified benzhydrol

Benzophenone iminodiimides of the formula I ##STR1## in which Y denotes hydroxyl or carboxyl, R.sub.1 denotes the optionally substituted radicals alkylene, phenylene or benzylidene, R.sub.2 denotes the radicals OH, substituted or unsubstituted alkyl or NH--CO--NHR.sub.3 and R.sub.3 denotes the radicals H, alkyl, phenyl or benzyl, processes for their preparation and polymers prepared therefrom.

Soluble and/or fusible polyimides and polyamidoimides

Sulfur-containing aromatic tetracarboxylic acids and derivatives thereof

Soluble and/or fusible polyamidoimide-polyimide block copolymers with high heat stability, useful e.g. as molding powders for thermoplastic shaping films, fibers and laminates and process for their preparation are provided.

Soluble and/or fusible polyamidoimide-polyimide block copolymers

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Vienna, Austria

Heinrich Gruber