Patent application number | Description | Published |
20080221279 | Process for the production of shape memory molded articles with a wide range of applications - The present invention relates to a process for the production of shape memory molded articles with a wide temperature application range, and their use in the he production of injection molded articles and extruded articles. | 09-11-2008 |
20080306176 | NCO Prepolymers Having A Low Content Of Free Monomeric Diisocyanate, And The Production Thereof - The present invention relates to NCO prepolymers having a low content of free monomeric diisocyanate, to a process for the production of these NCO) prepolymers, to polyurethanes prepared from these NCO prepolymers and to processes for the production of these polyurethanes. | 12-11-2008 |
20110109200 | TWO- OR MULTI-LAYER FERRELECTRET AND METHOD FOR THE PRODUCTION THEREOF - The present invention relates to a method for producing two- or multi-layer ferroelectrets with defined voids, with the exception of three-layer ferroelectrets with a perforated middle layer made of PTFE between two FEP layers, involving, introducing one or more clearances into at least one surface side of a polymer film element by means of a method of removal, applying a first covering to the surface side of the polymer film element comprising clearances formed in step A), and joining the polymer film element and the covering to form a polymer film composite, the clearances being closed while voids are formed, and to a two- or multi-layer ferroelectret, with the exception of three-layer ferroelectrets with a perforated middle layer made of PTFE between two FFP layers, in particular produced by this method. The invention also relates to a piezoelectric element containing a ferroelectret multi-layer composite according to the invention. | 05-12-2011 |
20110133598 | ELECTROMECHANICAL TRANSDUCER COMPRISING A POLYURETHANE POLYMER WITH POLYTETRAMETHYLENE GLYCOL ETHER UNITS - The present invention provides an electromechanical transducer comprising a dielectric elastomer with contact by a first electrode and a second electrode, said dielectric elastomer comprising a polyurethane polymer comprising the reaction product of A) a polyisocyanate and/or B) a polyisocyanate prepolymer with C) a compound having at least two isocyanate-reactive groups wherein the polyisocyanate prepolymer B) and/or the compound C) having at least two isocyanate-reactive groups comprise polytetramethylene glycol ether units of the formula (I): | 06-09-2011 |
20110198852 | ENERGY CONVERTER BASED ON POLYURETHANE SOLUTIONS - The present invention relates to a method for producing electromechanical converters, to the use of solutions of at least one polyurethane in one or more organic solvents to produce electromechanical converters, to electromechanical converters produced therefrom and to the use of such electromechanical converters. | 08-18-2011 |
20110234056 | FERROELETRET MULTILAYER COMPOSITE AND METHOD FOR PRODUCING A FERROELECTRET MULTILAYER COMPOSITE WITH PARALLEL TUBULAR CHANNELS - The present invention relates to a ferroelectret multi-layer composite ( | 09-29-2011 |
20110236690 | Polymer laminar composite having improved layer adhesion - The present invention provides a polymer laminar composite including a first layer and a second layer at least partially in contact with the first layer. The first layer includes a polyurethane polymer which is the reaction product of a polyisocyanate A) and/or a polyisocyanate prepolymer B) with an at least difunctional, isocyanate-group-reactive compound C) and a monomeric, monofunctional aromatic alcohol. The second layer includes polymeric thiophene of the formula (I), substituted at the 3 and/or 4 position: | 09-29-2011 |
20110256383 | POLYMER MATERIAL COMPRISING A POLYMER AND SILVER NANOPARTICLES DISPERSED HEREIN - A polymer material according to the invention comprises a polymer and silver nanoparticles dispersed in the polymer. The silver nanoparticles may be obtained by reducing a silver salt in a dispersing agent in the presence of a dispersion stabilizer with a reducing agent, the dispersion stabilizer being selected from the group consisting of carboxylic acids having ≧1 to ≦6 carbon atoms, salts of carboxylic acids having ≧1 to ≦6 carbon atoms, sulfates and phosphates. Such a material is particularly suitable for use as an electrode. The invention furthermore relates to a method for producing such a polymer material and to a polymer laminar composite including a polymer substrate and a polymer material according to the invention | 10-20-2011 |
20110298335 | ELECTROMECHANICAL TRANSDUCER HAVING A POLYISOCYANATE-BASED POLYMER ELEMENT - 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. | 12-08-2011 |
20110309716 | FERROELECTRET TWO-LAYER AND MULTILAYER COMPOSITE AND METHOD FOR PRODUCTION THEREOF - The invention relates to a method for producing double or multilayer ferroelectret with defined cavities by: structuring at least one first surface of a first polymer film ( | 12-22-2011 |
20120068572 | METHOD FOR PRODUCING OF AN ELECTROMECHANICAL TRANSDUCER - The present invention relates to a method for producing an electromechanical, for example piezoelectric, transducer in which a first polymer layer comprising cutouts is applied to a first continuous polymer layer by means of a printing and/or coating method, a cover is applied to the first polymer layer comprising cutouts in such a way that the cutouts of the first polymer layer comprising cutouts are closed off with the formation of cavities, and the cover is connected to the first polymer layer comprising cutouts. The invention also relates to electromechanical transducers produced by the method according to the invention, and the use of said electromechanical transducers. | 03-22-2012 |
20120114947 | POLYMER-FUNCTIONALIZED CARBON NANOTUBE, PROCESS FOR ITS PRODUCTION AND USE - The invention describes novel polymer-functionalized carbon nanotubes. These comprise a carbon nanotube, a first polymer that is adsorbed on the outer surface of a carbon nanotube and comprises amino groups, and a second polymer covalently bonded to the first polymer. The bond between the second polymer and the first polymer is formed by the reaction of amino groups from the first polymer with groups from the second polymer that are reactive with respect to amino groups. The invention further relates to a method for the production thereof, wherein carbon nanotubes are provided in an aqueous solution of a first polymer comprising amino groups and then a solution of a second polymer comprising groups that are reactive with respect to amino groups is added. The invention also relates to the use of the carbon nanotubes in dispersions, polymers and surface coatings. | 05-10-2012 |
20120126663 | METHOD FOR PRODUCING AN ELECTROMECHANICAL CONVERTER - The present invention relates to a method for producing an electromechanical, for example piezoelectric, transducer, comprising the steps of: A) applying a monolayer of spacer elements ( | 05-24-2012 |
20120128960 | ELECTRO-SWITCHABLE POLYMER FILM ASSEMBLY AND USE THEREOF - The invention relates to an electro-switchable polymer film assembly having a first and a second surface side, comprising at least one pair of electrodes ( | 05-24-2012 |
20120177934 | METHOD FOR THE PRODUCTION OF STRETCHABLE ELECTRODES - The invention relates to a method for producing stretchable electrodes, where electrically conductive carbon particles, especially carbon nanotubes, are introduced into a coating comprising an elastomer. In said method, a preparation of non-aggregated carbon particles having an average particle diameter ranging from=0.3 nm to=3000 nm in a solvent acts upon a coating comprising an elastomer. The solvent can cause a coating comprising an elastomer to swell. The duration of the action is calculated so as to be insufficient to dissolve the elastomer. Optionally, another electrically conductive layer is applied. The invention also relates to a stretchable electrode obtained in said manner and to the use thereof. | 07-12-2012 |
20120194039 | ELECTROMAGNETIC CONVERTER WITH A POLYMER ELEMENT BASED ON A MIXTURE OF POLYISOCYANATE AND ISOCYANATE-FUNCTIONAL PREPOLYMER AND A COMPOUND WITH AT LEAST TWO ISOCYANATE REACTIVE HYDROXYL GROUPS - The present invention relates to an electromechanical converter, in particular an electromechanical sensor, actuator and/or generator, which comprises a polymer element obtainable from a reaction mixture comprising a polyisocyanate, a polyisocyanate prepolymer and a compound having at least two isocyanate-reactive hydroxy groups. The present invention additionally relates to a process for the production of such an electromechanical converter and to the use of a polymer element according to the invention as an electromechanical element. The present invention relates further to an electronic and/or electrical device comprising an electromechanical converter according to the invention and to the use of an electromechanical converter according to the invention in an electronic and/or electrical device. | 08-02-2012 |
20120211922 | DEVICE FOR PROCESSING RAPID POLYMERIC REACTION SYSTEMS - The invention relates to a device for machine-based processing of rapid polymeric reaction systems, particularly polyurethane systems, wherein a rapid formula change is possible with simultaneously low raw material consumption. The device according to the invention further requires little space, allowing for operation in a standing flue, for example. | 08-23-2012 |
20120248942 | ELECTROMECHANICAL CONVERTER, METHOD FOR ITS PRODUCTION AND USE THEREOF - An electromechanical converter comprises a dielectric elastomer layer ( | 10-04-2012 |
20130026411 | PIEZOELECTRIC POLYMER FILM ELEMENT, IN PARTICULAR POLYMER FOIL, AND PROCESS FOR THE PRODUCTION THEREOF - The present invention relates to a piezoelectric polymer film element, in particular a polymer foil, comprising a polymer matrix, wherein hollow particles are arranged in the polymer matrix, and a process for the production of such a piezoelectric polymer film element, comprising the steps: A) provision of hollow particles and B) introduction of the hollow particles into a polymer matrix and C) shaping of the polymer matrix as a polymer film. The invention furthermore relates to an electromechanical converter comprising at least one first polymer film which comprises hollow particles as fillers. | 01-31-2013 |
20130307370 | ELECTROMECHANICAL CONVERTER, METHOD FOR PRODUCING SAME, AND USE THEREOF - The invention relates to an electromechanical converter, comprising at least one dielectric elastomer layer ( | 11-21-2013 |
20130313968 | EL ELEMENTS CONTAINING A PIGMENT LAYER COMPRISING CROSSLINKING SYSTEMS WITH BLOCKED ISOCYANATE GROUPS - The present invention relates to formulations for the production of an electroluminescent element, comprising a substrate, an at least partly transparent front electrode, at least one pigment layer, optionally a dielectric layer, a back electrode and busbars for contacting the electrodes, optionally a covering layer or a laminate, and a process for the production of an electroluminescent element, preferably by screen minting. The formulations for the production of the pigment and dielectric layer contain as binders isocyanate-reactive components and blocked isocyanates and/or blocked di- and/or polyisocyanates. | 11-28-2013 |
20140084747 | ELECTROMECHANICAL CONVERTER HAVING A TWO-LAYER BASE ELEMENT, AND PROCESS FOR THE PRODUCTION OF SUCH AN ELECTROMECHANICAL CONVERTER - The present invention relates to electromechanical converters at least comprising a polymer layer composite with voids ( | 03-27-2014 |
20140110622 | POLYMER MATERIAL CONTAINING ORGANICALLY MODIFIED LAYERED SILICATES - The present invention relates to a polymer material comprising a polymer and an organically modified layered silicate dispersed in the polymer. The total content of alkali and/or alkaline earth metal cations in the polymer material is ≦1 ppm. It relates further to the use of the polymer material as an electret material, and to an electromechanical converter comprising such a polymer material. | 04-24-2014 |
20140318395 | SCREEN PRINTING METHOD USING PRINTING INK WHICH REACTS TO FORM A POLYURETHANE POLYMER - The invention relates to a method for printing objects, comprising the step of application of a printing ink by means of screen printing, wherein the printing ink comprises a polyisocyanate A) and/or a polyisocyanate prepolymer B), an at least difunctional compound C) which is reactive towards isocyanate groups and furthermore a catalyst D) which cap be activated by increasing the temperature. It also relates to the use of a corresponding reaction, mixture as a printing ink in screen printing processes and to an electromechanical converter having a polymer layer produced, by a method according to the invention. | 10-30-2014 |
20140367021 | METHOD FOR PRODUCING A CORD-SHAPED COMPOSITE MATERIAL AND SYSTEM - The invention relates to a method and to a pultrusion system ( | 12-18-2014 |