Patents by Inventor Burkhard Köhler
Burkhard Köhler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20130066112Abstract: The invention relates to multi-amine functional oligomers and multi-oxime functional oligomers in addition to a method for producing the same by means of the co-polymerisation of carbonyl carriers such as olefins or dienes, reaction with hydroxylamine and a subsequent selective catalytic hydrogenation.Type: ApplicationFiled: March 8, 2011Publication date: March 14, 2013Applicant: Bayer Intellectual Property GmbHInventors: Christoph Gürtler, Thomas Ernst Müller, Ewa Gebauer, Henning Vogt, Yevgen Berezhanskyy, Burkhard Köhler, Walter Leitner
-
Publication number: 20130018186Abstract: The invention relates to bimetallic complexes in which the ligand contains a salophen unit which complexes copper, manganese or cobalt and a phenanthroline unit which complexes palladium and the two systems are linked by a continuous conjugated system. The invention further relates to the use of these bimetallic complexes as catalysts for the oxidative carbonylation of aromatic hydroxy compounds to form diaryl carbonates, a process for preparing diaryl carbonates using the bimetallic complex as catalyst and also diaryl carbonates prepared by oxidative carbonylation of aromatic hydroxy compounds using the bimetallic complexes of the invention as catalysts.Type: ApplicationFiled: December 9, 2010Publication date: January 17, 2013Applicant: Bayer Intellectual Property GmbHInventors: Christoph Gürtler, Thomas Ernst Müller, Pieter Ooms, Johann Rechner, Friedhelm Risse, Angelina Prokofieva, Franco Doro, Burkhard Köhler, Walter Leitner, Aurel Wolf
-
Publication number: 20110298335Abstract: The present invention relates to an electromechanical transducer, in particular an electromechanical sensor, actuator and/or generator, which exhibits a polymer element that is obtainable from a reaction mixture comprising a polyisocyanate or a polyisocyanate prepolymer or a mixture thereof and a compound with at least two isocyanate-reactive amino groups. Moreover, the present invention relates to a process for producing an electromechanical transducer of such a type and also to the use of a polymer element of such a type as an electromechanical element. Furthermore, the present invention relates to an electronic and/or electrical apparatus that includes an electromechanical transducer according to the invention, and also to the use of an electromechanical transducer according to the invention in an electronic and/or electrical apparatus.Type: ApplicationFiled: July 17, 2009Publication date: December 8, 2011Applicant: BAYER MATERIALSCIENCE AGInventors: Werner Jenninger, Sebastian Dörr, Joachim Wagner, Burkhard Köhler, Heike Heckroth, Mathias Matner
-
Publication number: 20110245351Abstract: The invention relates to novel rapidly-curing adhesives made from hydrophilic polyisocyanate prepolymers for application in surgery.Type: ApplicationFiled: November 28, 2009Publication date: October 6, 2011Applicant: BAYER MATERIALSCIENCE AGInventors: Heike Heckroth, Burkhard Köhler
-
Publication number: 20110184080Abstract: 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.Type: ApplicationFiled: June 26, 2009Publication date: July 28, 2011Applicant: Bayer MaterialScience AGInventors: Jan Schönberger, Burkhard Köhler, Peter Haas, Meike Niesten
-
Publication number: 20110123479Abstract: 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.Type: ApplicationFiled: July 4, 2009Publication date: May 26, 2011Applicant: Bayer MaterialScience AGInventors: Heike Heckroth, Burkhard Köhler, Sebastian Dörr
-
Patent number: 7947863Abstract: 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.Type: GrantFiled: January 15, 2008Date of Patent: May 24, 2011Assignee: Bayer Material Science AGInventors: Burkhard Köhler, Michael Mager
-
Patent number: 7923574Abstract: The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.Type: GrantFiled: February 23, 2009Date of Patent: April 12, 2011Assignee: Bayer MaterialScience AGInventors: Marc Leimenstoll, Burkhard Köhler, Christos Karafilidis, Matthias Wintermantel
-
Publication number: 20110003898Abstract: 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.Type: ApplicationFiled: February 21, 2009Publication date: January 6, 2011Applicant: Bayer MaterialScience AGInventors: Heike Heckroth, Burkhard Köhler, Sebastian Dörr
-
Publication number: 20100259133Abstract: The present invention relates to compositions comprising aqueous polymer dispersions, particularly polyurethane dispersions, used for the production of energy converter, energy converters produced therefrom, and the use of such energy converters.Type: ApplicationFiled: October 24, 2008Publication date: October 14, 2010Applicant: Bayer MaterialScience AGInventors: Werner Jenninger, Sebastian Doerr, Joachim Wagner, Burkhard Koehler
-
Patent number: 7754782Abstract: The present invention relates to novel, rapidly curing adhesives based on hydrophilic polyisocyanate prepolymers for use in surgery.Type: GrantFiled: June 30, 2008Date of Patent: July 13, 2010Assignee: Bayer Material Science AGInventors: Heike Heckroth, Burkhard Köhler, Sebastian Dörr
-
Publication number: 20100034861Abstract: The present invention relates to dispersions of nanoureas comprising biologically active compounds, a process for their preparation, and their use.Type: ApplicationFiled: October 14, 2009Publication date: February 11, 2010Applicant: Bayer MaterialScience AGInventors: Sebastian Dörr, Michael Mager, Burkhard Köhler, Heike Heckroth
-
Publication number: 20100022706Abstract: 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.Type: ApplicationFiled: September 29, 2009Publication date: January 28, 2010Applicant: Bayer MaterialScience AGInventors: Werner Jenninger, Burkhard Köhler, Joachim Wagner
-
Patent number: 7518778Abstract: Electrochromic arrangement containing an anionic polyelectrolyte that has been neutralized with lithium and can be applied from aqueous solution.Type: GrantFiled: September 10, 2007Date of Patent: April 14, 2009Assignee: Bayer MaterialScience AGInventors: Werner Jenninger, Burkhard Köhler, Joachim Wagner
-
Publication number: 20090012206Abstract: The present invention relates to novel, rapidly curing adhesives based on hydrophilic polyisocyanate prepolymers for use in surgery.Type: ApplicationFiled: June 30, 2008Publication date: January 8, 2009Applicant: Bayer MaterialScience AGInventors: Heike Heckroth, Burkhard Koehler, Sebastian Doerr
-
Patent number: 7410810Abstract: 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.Type: GrantFiled: November 4, 2002Date of Patent: August 12, 2008Assignee: Bayer Technology Services GmbHInventors: Kerstin Bohmann, Werner Hoheisel, Burkhard Köhler, Ingmar Dorn
-
Patent number: 7371463Abstract: 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.Type: GrantFiled: February 15, 2005Date of Patent: May 13, 2008Assignee: Bayer MaterialScience AGInventors: Burkhard Köhler, Harald Kraus, Joachim Simon
-
Patent number: 7344895Abstract: A process for synthesizing nanoparticles, in particular metal salt nanoparticles. To the synthesis mixture is added a modifying reagent which binds, by means of a first functional group, to the nanoparticle surface and which carries a second functional group for binding to molecules which are specifically selected in dependence on the subsequent use of the nanoparticles. This dispenses with a postsynthetic, separate, application-specific modification step. A new substance class, the pentaalkyl iminobis(methylenephosphono)carboxylates, are particularly suitable for this purpose.Type: GrantFiled: December 6, 2003Date of Patent: March 18, 2008Assignee: Bayer Technology Services GmbHInventors: Burkhard Köhler, Kerstin Bohmann, Werner Hoheisel, Markus Haase, Stefan Haubold, Christiane Meyer, Thorsten Heidelberg
-
Patent number: 7285331Abstract: The invention relates to a structured surface with ultraphobic properties. Said surface as a surface topography in which the value of the integral of a function S: S(log f)=a(f)·f, which gives a relationship between the spatial frequencies f of the individual Fourier components and their amplitudes a(f) is at least 0.5 between the integration limits log (f1/?m?1)=?3 and log (f2/?m?1)=3. The surface consists of a hydrophobic or oleophobic material or is coated with a hydrophobic or oleophobic material.Type: GrantFiled: December 22, 1999Date of Patent: October 23, 2007Assignee: Qiagen GmbHInventors: Karsten Reihs, Daniel-Gordon Duff, Georg Wiessmeier, Matthias Voetz, Johan Kijlstra, Dieter Rühle, Burkhard Köhler
-
Patent number: 7253252Abstract: The present invention relates to new water-soluble polyaspartic esters and also to their use in aqueous coating compositions.Type: GrantFiled: July 11, 2005Date of Patent: August 7, 2007Assignee: Bayer MaterialScience AGInventors: Burkhard Köhler, Meike Niesten, Joachim Simon, Christian Wamprecht