Patents by Inventor Katharina Landfester
Katharina Landfester 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: 20180037694Abstract: The present invention relates to aqueous peptide-functionalized polyurethane dispersions that can be used as adhesives, in particular for metal surfaces, such as steel surfaces. As hybrid materials, they provide for a versatile system that can be finely tuned and combine the advantageous properties of polyurethane and peptide materials. Also encompassed are processes for their production, compositions containing them and their use as coatings and adhesives.Type: ApplicationFiled: August 25, 2017Publication date: February 8, 2018Inventors: Andreas Taden, Katharina Landfester, Roland Breves, Hans G. Börner, Laura Breucker, Christian Kastner, Birgit Veith, Maria Meissler, Hannes Keller
-
Publication number: 20170342192Abstract: The present invention relates to aqueous peptide-stabilized polyurethane dispersions that can be used in various applications including adhesives and cosmetics, as they are surfactant and solvent free and have low VOC emissions. As hybrid materials, they provide for a versatile system that can be finely tuned and combine the advantageous properties of polyurethane and peptide materials. Also encompassed are processes for their production including dispersing an NCO-terminated polyurethane prepolymer into a continuous aqueous phase comprising one or more peptides, thereby forming peptide-stabilized polyurethane particles, compositions containing them and their use in cosmetics and adhesives.Type: ApplicationFiled: April 6, 2017Publication date: November 30, 2017Inventors: Andreas TADEN, Katharina LANDFESTER, Laura BREUCKER
-
Publication number: 20170247498Abstract: The invention relates to a method for producing radiation-curable alkenyl ether polyols, to radiation-curable alkenyl ether polyols produced using the method according to the invention, and to the use thereof for the synthesis of radiation-interlinkable oligomers or polymers by means of polyaddition reactions or polycondensation reactions, in particular for the synthesis of radiation-curable polyesters, polyethers, polyurethanes and polyureas, particularly preferably UV-curable polyurethanes. The invention also relates to radiation-curable polyurethane polymers that are obtained by reacting at least one alkenyl ether polyol according to the invention with a polyisocyanate.Type: ApplicationFiled: March 7, 2017Publication date: August 31, 2017Inventors: Andreas Taden, Katharina Landfester, Stefan Kirschbaum
-
Publication number: 20160355630Abstract: The present invention relates to a method for the generation of thermoset-thermoplastic hybrid nanoparticles with a hard phase and a soft phase, wherein the hard phase comprises or consists of a thermosetting polymer and the soft phase comprises or consists of a thermoplastic polymer, the method including a) providing a mixture of a thermosetting resin, monomers of a thermoplastic polymer, and a curing agent for the thermosetting resin; b) dispersing the mixture into an aqueous medium to form a miniemulsion, c) polymerizing the thermosetting resin in the miniemulsion by stepwise polymerization to form a seed emulsion of thermoplastic monomer swollen thermosetting polymer nanoparticles; d) adding monomers of the thermoplastic polymer to the seed emulsion; and e) adding a polymerization initiator and polymerizing the monomers of the thermoplastic polymer by free radical polymerization to form the core-shell nanoparticle.Type: ApplicationFiled: August 18, 2016Publication date: December 8, 2016Inventors: Andreas TADEN, Katharina LANDFESTER, Yang ZHANG
-
Publication number: 20160272807Abstract: The synthesis of nanoparticles based on hyperbranched-linear-hyperbranched ABA triblock copolymers with hyperbranched polyglycerol (hbPG) as A-block and linear poly(oxymethylene) as B-block is described. The acid-degradable nanoparticles were formed in a facile process, combining a solvent evaporation process with the miniemulsion technique resulting in particles with a diameter in the range of 190 to 250 nm and a standard deviation of ˜30% determined with DLS and SEM. The nanoparticles were placed on a silicon wafer and sintered leading to films with a thickness in the ?m-range investigated via SEM. The surface properties of these films were investigated via static contact angle measurements at the liquid/vapor interface. The contact angle decreases from 67° for the polymer with two hydroxyl groups to 29° for the polymer with 16 hydroxyl groups, confirming the influence of the polymer structure and size of the hbPG block on the surface properties.Type: ApplicationFiled: March 18, 2016Publication date: September 22, 2016Inventors: Michael Haubs, Klaus Kurz, Markus B. Bannwarth, Katharina Landfester, Frederik R. Wurm, Holger Frey, Rebecca Klein
-
Publication number: 20160222286Abstract: A long-term stable photoactive composition, namely a phosphorescent composition or a TTA-photon upconversion composition, contains: a) at least one compound, which has a triplet state capable of energy transfer via an emissive process or a non-emissive process, wherein the at least one compound having a triplet state is i) at least one phosphorescent compound and/or ii) at least one sensitizer compound being capable of absorbing radiation at a first frequency v1 and at least one emissive compound, wherein the at least one sensitizer compound is capable of transferring energy to the at least one emissive compound and wherein the at least one emissive compound, after obtaining energy transferred from the at least one sensitizer compound, is capable of emitting light at a second frequency v2, wherein the following equation is fulfilled: v2>v1, wherein the at least one sensitizer compound is capable of a triplet-triplet energy transfer to the at least one emissive compound and wherein the at least one emissiType: ApplicationFiled: September 23, 2014Publication date: August 4, 2016Applicant: MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V.Inventors: Katharina Landfester, Yuri Avlasevich, Audrey Turshatov, Frederick Wurm, Mikhail Filatov, Dzmitry Busko, Stanislav Balouchev, Filippo Marsico
-
Patent number: 8883465Abstract: The present invention relates to a mini-emulsion which comprises at least one hydrolase, where the continuous phase of the mini-emulsion contains at least one oxidant, while the dispersed phase comprises at least one C6-60 carboxylic acid and optionally at least one reactant. Furthermore, the present invention relates to a method of preparing the mini-emulsion and to a process for the preparation of C6-60 percarboxylic acids and to a process for the preparation of an oxidized reactant, in each case using the abovementioned mini-emulsions.Type: GrantFiled: March 14, 2013Date of Patent: November 11, 2014Assignees: Henkel AG & Co. KGAA, Max-Planck-Gesellschaft zur Forderung der Foerderung der Wissenschaften E.V.Inventors: Andreas Taden, Melanie Hagenbucher, Katharina Landfester
-
Patent number: 8703865Abstract: The invention relates to a method for production of an aqueous dispersion of polymer-encapsulated pigments characterized in that (a) an aqueous pigment dispersion, containing at least one organic pigment (P) at least one surfactant (T), and water is prepared,(b) a monomer miniemulsion stabilized by a hydrophobic organic compound with a water solubility at 20° C. of not more than 5×10?5 g/l, is prepared from a polymerizable monomer (M) and at least one surfactant (T), in water, (c) a monomer pigment emulsion is prepared, whereby the aqueous pigment dispersion from (a) and the monomer miniemulsion from (b) are mixed and homogenized, and (d) the pigment-containing monomer miniemulsion from (c) is polymerized in the presence of a polymerization initiator and/or by heat, whereupon an encapsulation of the pigment with the polymer thus formed occurs.Type: GrantFiled: April 21, 2005Date of Patent: April 22, 2014Assignee: Clariant Finance (BVI) LimitedInventors: Matthias Ganschow, Hans Joachim Metz, Ulrike Rohr, Karl-Heinz Schweikart, Katharina Landfester
-
Publication number: 20120123012Abstract: The present invention relates to microcapsules composed of a shell of polymers and of a core comprising photoinitiators which exhibit acylphosphine oxides, their derivatives or amine coinitiators or mixtures of these compounds, and also to the preparation of these microcapsules and to their use for dental materials.Type: ApplicationFiled: October 23, 2007Publication date: May 17, 2012Inventors: Volker Rheinberger, Ulrich Salz, Jörg Zimmermann, Katharina Landfester, Ulrich Ziener, Marissa Volz
-
Patent number: 7939301Abstract: The present invention is directed towards an asymmetric enzymic process for preparing optically active organic compounds. The process according to the invention is carried out in what are termed miniemulsions. The invention also relates to an enzymic reaction mixture which exhibits a miniemulsion.Type: GrantFiled: November 4, 2005Date of Patent: May 10, 2011Assignee: Evonik Degussa GmbHInventors: Harald Gröger, Karlheinz Drauz, Hendrik Hüsken, Katharina Landfester
-
Patent number: 7786207Abstract: An aqueous dispersion of a block copolymer comprising a polyadduct or polycondensate (polymer I for short) on one hand and a polymer obtainable by free-radical addition polymerization (polymer II for short) on the other, wherein polymer I is obtainable by reaction of its starting compounds in miniemulsion, one of the starting compounds of polymer I is an initiator of free-radical addition polymerization, and polymer II is prepared in the presence of said initiator.Type: GrantFiled: December 4, 2004Date of Patent: August 31, 2010Assignees: BASF Aktiengesellschaft, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.Inventors: Ulrike Licht, Markus Antonietti, Katharina Landfester
-
Publication number: 20100015165Abstract: The present invention is directed to a method of producing nanoparticles and nanoparticles obtainable by that method. The invention further relates to a pharmaceutical composition, comprising said nanoparticles and the use of the nanoparticles for the treatment of diseases and conditions, requiring a pharmaceutical agent to cross one or more physiological barriers.Type: ApplicationFiled: July 3, 2007Publication date: January 21, 2010Inventors: Katharina Landfester, Clemens Weiss, Julia Kubasch
-
Publication number: 20090018262Abstract: The invention relates to aqueous primary dispersions which contain a hydrophobic polyurethane which is produced in a mini-emulsion by reacting with (a) polyisocyanate and (b) compounds containing isocyanate reactive groups. The invention also relates to a method for producing said dispersion and the use thereof for producing coatings and adhesives.Type: ApplicationFiled: September 19, 2008Publication date: January 15, 2009Applicants: BASF Aktiengesellschaft, Max-Planck-Gesellschaft Zur Foerd Der Wissen, E.V.Inventors: Ulrike Licht, Markus Antonietti, Katharina Landfester, Franca Tiarks
-
Publication number: 20080287606Abstract: An aqueous dispersion of a block copolymer comprising a polyadduct or polycondensate (polymer I for short) on one hand and a polymer obtainable by free-radical addition polymerization (polymer II for short) on the other, wherein polymer I is obtainable by reaction of its starting compounds in miniemulsion, one of the starting compounds of polymer I is an initiator of free-radical addition polymerization, and polymer II is prepared in the presence of said initiator.Type: ApplicationFiled: December 4, 2004Publication date: November 20, 2008Applicants: BASF Aktiengesellschaft, Max-Planck-Gesellschaft Zur Foerder. Wissen, e.v.Inventors: Ulrike Licht, Markus Antonietti, Katharina Landfester
-
Publication number: 20080020423Abstract: The present invention is directed towards an asymmetric enzymic process for preparing optically active organic compounds. The process according to the invention is carried out in what are termed miniemulsions. The invention also relates to an enzymic reaction mixture which exhibits a miniemulsion.Type: ApplicationFiled: May 25, 2007Publication date: January 24, 2008Applicant: Degussa GmbHInventors: Harald Groger, Karlheinz Drauz, Hendrik Husken, Katharina Landfester
-
Publication number: 20070292524Abstract: The present invention is directed to a delivery vehicle containing nanoparticles. The present invention is further directed to a pharmaceutical composition, comprising said drug delivery vehicle. Further, the invention pertains to a method for manufacturing of said delivery vehicles as well as to the use of these vehicles in medicine.Type: ApplicationFiled: March 14, 2007Publication date: December 20, 2007Inventors: Kerstin Ringe, Hans-Eckart Radunz, Katharina Landfester, Clemens Weiss
-
Publication number: 20070227401Abstract: The invention relates to a method for production of an aqueous dispersion of polymer-encapsulated pigments characterized in that (a) an aqueous pigment dispersion, containing at least one organic pigment (P) at least one surfactant (T), and water is prepared, (b) a monomer miniemulsion stabilized by a hydrophobic organic compound with a water solubility at 20° C. of not more than 5×10?5 g/l, is prepared from a polymerizable monomer (M) and at least one surfactant (T), in water, (c) a monomer pigment emulsion is prepared, whereby the aqueous pigment dispersion from (a) and the monomer miniemulsion from (b) are mixed and homogenized, and (d) the pigment-containing monomer miniemulsion from (c) is polymerized in the presence of a polymerization initiator and/or by heat, whereupon an encapsulation of the pigment with the polymer thus formed occurs.Type: ApplicationFiled: April 21, 2005Publication date: October 4, 2007Inventors: Matthias Ganschow, Hans Metz, Ulrike Rohr, Karl-Heinz Schweikart, Katharina Landfester
-
Publication number: 20070148460Abstract: A process for producing aqueous primary dispersions of polymer-ensheathed pigment, which comprises (a) at least one polyfunctional isocyanate and (b) at least one compound having isocyanate-reactive groups selected from polyetherols, polyesterols, polyhydric alcohols having up to 8 carbon atoms, polycarbonate diols, polyhydroxyolefins, polyhydroxyurethanes, polyisobutenediols, polysiloxanes having on average at least 2 hydroxyl groups per molecule and lactone-based polyesterdiols being mixed with pigment, water and if appropriate one or more surface-active substances and reacted with each other.Type: ApplicationFiled: December 16, 2004Publication date: June 28, 2007Applicants: BASF AKTIENGESELLSCHAFT, MAX-PLANCK-GESELLSCHAFT ZUR FOERD DER WISSEN E.V.Inventors: Ulrike Licht, Christian Kruger, Markus Antonietti, Katharina Landfester
-
Publication number: 20070112129Abstract: Aqueous dispersion of a polyurethane, obtainable by reacting polyisocyanates and isocyanate-reactive compounds in miniemulsion, wherein the isocyanate-reactive compounds are at least in part polysiloxanes of the formula I where R1 and R2 independently of one another are a monovalent hydrocarbon radical having not more than 20 carbon atoms, which if appropriate may also contain heteroatoms such as O or N, R3 and R4 independently of one another are a single bond or a divalent hydrocarbon radical having not more than 20 carbon atoms, which if appropriate may also contain heteroatoms such as O or N, R5 and R6 independently of one another are a group OH, SH, NH2 or NHR7 and R7 is a monovalent hydrocarbon radical having not more than 20 carbon atoms, which if appropriate may also contain heteroatoms such as O or N, and n is an integer from 1 to 100.Type: ApplicationFiled: October 30, 2004Publication date: May 17, 2007Applicants: BASF Aktiengesellschaft, Mas-Planck-Gesellschaft Zur Förd Der Wissen. E.V.Inventors: Ulrike Licht, Markus Antonietti, Katharina Landfester
-
Publication number: 20060058454Abstract: A process for preparing aqueous primary dispersions comprising at least one hydrophobic polyurethane obtainable in miniemulsion by reacting (a) at least one polyisocyanate and (b) at least one compound containing at least one isocyanate-reactive group in the presence of a catalyst.Type: ApplicationFiled: January 28, 2004Publication date: March 16, 2006Applicant: MAX-PLANCK-GESELLSCHAFTInventors: Ulrike Licht, Susanne Deutrich, Markus Antonietti, Katharina Landfester