Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Julius-maximilians-universitat Wurzburg

Wolter, Herbert

Nique, Somchith

Bausen, Denise

Somchith Nique

Herbert Wolter

Sabine Amberg-Schwab

Thomas Ballweg

Johannes Schwaiger

Mona Seyfried

Doris Heinrich

Sebastian Hasselmann

Denise Bausen

Kerstin Obel

Caroline Kopittke

Ulrike Weber

Annette Burger

Rainer Xalter

The present invention concerns a silane of formula (1)RSIR  (1) The invention further relates to organically modified, polymerized silicic acid polycondensates which have been obtained by reaction and optionally subsequent hydrolytic condensation of such a silane or of silicic acid polycondensates therefrom with a bridging compound, which undergo an addition reaction with the at least one thiol or primary or secondary amino group of the radical Rof the silane of the formula (1).

Degradable silane having thio and amino groups, silicic acid polycondensates and hybrid polymers produced therefrom, use thereof and method for producing the silanes

A three-dimensional scaffold structure and a process for its manufacture. The scaffold structure has a polymer system obtainable by photostructuring a starting material containing precursor molecules or inorganic polymers thereof having an organically polymerizable radical with at least one C═C double bond, an inorganically polymerizable silane-based radical and a functional group or derivative thereof.

Three-dimensional scaffold structures with selectively functionalized polymer systems, their use and process for their manufacture

The invention relates to a silane or silane mixture obtainable by reacting a hydrolysable silane of the formula (A): SiR4 in which R is a hydrolytically condensable group or hydroxyl with a compound R*(OH)x where x is 1, 2, 3 or greater 3, where R* has a straight-chain or branched hydrocarbon skeleton which, according to the number x, is monovalent, divalent, trivalent or multivalent, and has a hydrocarbonaceous chain interrupted by at least two &#x2014;C(O)O&#x2014; groups, wherein there are a maximum of 8 successive carbon atoms in the individual hydrocarbon units formed by interruptions within this chain and the, or in the case of branched structures at least one, end of the hydrocarbonaceous chain at the opposite end to the sole hydroxyl group or one of the hydroxyl groups bears an organically polymerizable group, wherein the alcohol is otherwise unsubstituted or has further substituents. The invention further relates to an organically modified silica polycondensate formed as a result of hydrolytic condensation of the silane or silane mixture and optionally a subsequent organic polymerization of the organically polymerizable groups, with optional addition of an organic, at least difunctional compound to the silica polycondensate prior to the organic polymerization.

Biodegradable hybrid polymers usable in medical technology or in biology, starting silanes therefor, and preparation process therefor and uses thereof

The present invention relates to compounds and silicic acid (hetero)polycondensates comprising structures of formulas (1) and/or (2), 

Silane and silicic acid (hetero)polycondensate having aromatic compounds linked via coupling groups which are suitable as or for matrix systems having high translucency and good mechanical properties

A compound has at least three functionalities, including a first functionality (a) that is a sulfonate group or a sulfate group of the formula &#x2014;(O)&#x2014;SOM with d=0 or 1 and with M=hydrogen or a monovalent metal cation or a corresponding portion of a multivalent metal cation; a second functionality (b) that is a (meth)acryl residue; and a third functionality (c) that is a carboxylic acid function and/or a thioether group. When the compound is free of silicon, the sulfonate or sulfate group and the (meth)acryl residue are separated from each other by a hydrocarbon-containing residue having a carbon chain. The carbon chain is interrupted by S or NH, or the carbon chain contains a linking group, selected from C(O)NH, NHC(O), NRC(O), NHC(O)O, NRC(O)O, NHC(O)NH, C(O)NHC(O) and &#x2014;C(O)S&#x2014;, wherein Ris alkyl or alkenyl or a (meth)acryl group.

Compounds containing (meth)acrylate groups and sulfonate or sulfate groups, polymers and condensates therefrom and use of the polymers and condensates

The invention relates to a compound, comprising at least three functionalities, that is (a) a sulfonate or sulfate group of the formula &#x2014;(O)&#x2014;SOM with d=0 or 1 and M=hydrogen or a monovalent metal cation or the corresponding fraction of a polyvalent metal cation, (b) a (meth)acryl group, and (c) either (c1) at least one further (meth)acryl group or an inorganically condensable group, and/or (c2) a further carboxylic acid function, and/or (c3) a function which increases the refractive index of a material produced from the compounds, that is a thioether group, with the proviso that a sulfonate or sulfate group and a (meth)acrylate group are separated from one another in a silicon-free compound via a hydrocarbon-containing group, the carbon chain of which is either interrupted by O, S or NH or contains a linking group.

Compounds containing (meth)acrylate groups and sulfonate or sulfate groups, polymers and condensates made therefrom and use of the polymers and condensates

The present invention relates to a process for a chain extension of radicals bonded to silicon via carbon in silanes or siloxanes while maintaining or increasing the number of functional groups on the respective Si&#x2014;C-bonded radicals, wherein a silane or siloxane with a radical bonded to a silicon atom by a carbon atom, which bears at least two functional groups, wherein a first group of the functional groups is an unsaturated, organically polymerizable group and a second group of the functional groups is selected from among

Hydrolysable and polymerizable silanes with adjustable spatial distribution of the functional groups, and use thereof

The invention relates to carboxylic acid derivates which contain at least one organically polymerisable group and at least one group which contains phosphorous and is reactive or that modulates the properties of the molecule. The invention also relates to a method for production of the inventive molecules and the use thereof in dentistry and for influencing the properties of materials.

Growing community of inventors

Eisingen, Germany

Somchith Nique