Abstract: The invention relates to novel rapidly-curing adhesives made from hydrophilic polyisocyanate prepolymers for application in surgery.

Abstract: The present invention relates to a process for preparing a hydrophilic aliphatic polyurethane foam which includes providing, curing, and foaming a composition comprising: an isocyanate-functional prepolymer having a weight fraction of low molecular weight aliphatic diisocyanates of below 1.0% by weight based on the prepolymer, obtained by reaction of a low molecular weight aliphatic diisocyanate having a molar mass of 140 to 278 g/mol with a di- to hexafunctional polyalkylene oxide having an OH number of 22.5 to 112 mg KOH/g and an ethylene oxide content of 50 to 100 mol %; optionally a heterocyclic 4-ring or 6-ring oligomer of low molecular weight aliphatic diisocyanates having a molar mass of 140 to 278 g/mol; water; optionally a catalyst; a C8-C22 monocarboxylic acid or its ammonium or alkali metal salt or a C12-C44 dicarboxylic acid or its ammonium or alkali metal salt; optionally a surfactant; and optionally a mono- or polyhydric alcohol.

Abstract: The present invention relates to a method that includes providing a formulation having an isocyanate-functional prepolymer and a curing component comprising an amino-functional aspartic ester of the general formula (I) applying the formulation to a cell tissue; and curing the formulation such that the loss of blood (haemostatic) or tissue fluids is staunched or leaks in cell tissues are sealed.

Abstract: Processes for preparing polyurethane hydrogels which include free-radically cross-linking: A) hydrophilic polyurethanes having one or more olefinically unsaturated groups selected from the group consisting of acrylate and methacrylate groups; in the presence of B) water; and C) a redox system including a water-soluble oxidizing agent and a water-soluble reducing agent, the oxidizing agent being capable in terms of redox potential of reacting with the water-soluble reducing agent by free-radical formation, wherein the hydrophilic polyurethanes are based on hydroxyl-functional polyalkylene oxides.

Abstract: The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.

Abstract: The present invention relates to novel, rapidly curing adhesives based on hydrophilic polyisocyanate prepolymers for use in surgery, which contain pharmacologically active ingredients. The adhesive system contains A) isocyanate group-containing prepolymers obtainable from A1) aliphatic isocyanates and A2) polyols with number-averaged molecular weights of ?400 g/mol and average OH group contents of from 2 to 6 B) a curing component comprising B1) amino group-containing aspartate esters of the general formula (I) wherein X is an n-valent organic radical, which is obtained by removal of the primary amino groups of an n-functional amine, R1 and R2 are the same or different organic radicals, which contain no Zerevitinov active hydrogen and n is a whole number of at least 2 and B2) organic fillers which have a viscosity at 23° C.

Abstract: The present invention relates to novel, rapidly curing adhesives based on hydrophilic polyisocyanate prepolymers for use in surgery.

Abstract: The present invention relates to dispersions of nanoureas comprising biologically active compounds, a process for their preparation, and their use.

Abstract: The invention provides polyurethanes filled with carbon black, which are characterised by a high dielectric constant and high breakdown strength, and which are synthesised from polyalkylene oxides that have been produced by DMC catalysis. The compositions comprise polyether polyurethanes which are the reaction products of one or more polyisocyanates and one or more polyol components, the polyol components being comprised of a) polyalkylene oxides produced by DMC catalysis, and b) 0-50 wt. % of polyols free from catalyst residues, and B) 0.1-30 wt. % of carbon black.

Abstract: A polyol emulsion of castor oil and monoepoxides is combined with methylenediphenyl diisocyanate (MDI) and cement to produce a polymer cement.

Abstract: The invention relates to a phosphorus-containing polymer for coating dielectric materials, to processes for its preparation and to its use, as well as to an optical signal transducer having a coating of the polymer and to its use.

Abstract: Electrochromic arrangement containing an anionic polyelectrolyte that has been neutralized with lithium and can be applied from aqueous solution.

Abstract: The invention relates to silane coatings obtainable by reaction of aminosilanes with glycidyl (meth)acrylate copolymers.

Abstract: The invention relates to an assay based on resonance energy transfer (RET), comprising a first molecule grope A, which is marked with at least one energy donor, and at least one second molecule group B which is marked with at least one energy acceptor, the donor comprising a molecule or particle which can be energetically excited by an external radiation source and which is fluorescence enabled and the acceptor comprising a molecule or particle which can be excited by energy transfer via the donor with partial or complete quenching of the donor fluorescence, and the donor and/or acceptor comprise luminescing inorganic dope nanoparticles having an expansion of ?50 nanometers, emitting electromagnetic radiation with stokes or anti-stokes scattering after energetic excitation.

Abstract: The invention provides polyurethanes filled with carbon black, which are characterised by a high dielectric constant and high breakdown strength, and which are synthesised from polyalkylene oxides that have been produced by DMC catalysis. The compositions comprise polyether polyurethanes which are the reaction products of one or more polyisocyanates and one or more polyol components, the polyol components being comprised of a) polyalkylene oxides produced by DMC catalysis, and b) 0-50 wt. % of polyols free from catalyst residues, and B) 0.1-30 wt. % of carbon black.

Abstract: The present invention provides hydrogels formed from polyurethane (meth)acrylates in water using water-soluble redox initiators.

Abstract: A curable composition which has photochromic properties and is based on an amine-cured epoxy resin, a cured product which is obtained by thermal curing of this curable composition on a substrate, e.g. polycarbonate glass with triplex formation (three-layered structure), and a process for the preparation of an optical material are described.

Abstract: Coating compositions for producing sol-gel coatings that include: a) one or more alkoxysilyl-containing oxalamides of the general formula (II), where R? is hydrogen or an organic C1-C10 radical, R? radicals are organic, optionally oxygen-attached C1-C10 radicals, R is an oxygen-attached radical optionally containing one or more ether groups and having 1 to 30 carbon atoms and n is an integer between 0 and 2, b) optionally further crosslinkers, c) one or more catalysts and d) water. The sol-gel coatings are produced by a method that includes combining a silica sol and one or more alkoxysilyl-containing oxalamides. The sol-gel coatings obtained from the above-described coating compositions can be used to coat substrates.

Abstract: The invention concerns novel hydrogels, a process for the preparation of these hydrogels and would contact materials comprising these hydrogels. These polyurethane hydrogels are obtained by the reaction of aliphatic isocyanate prepolymers with polyols comprising tertiary nitrogen in water.

Abstract: Electrochromic arrangement containing an anionic polyelectrolyte that has been neutralized with lithium and can be applied from aqueous solution.