| Patent application number | Description | Published |
|---|
| 20080217590 | PHOTOCHROMIC MATERIAL AND PROCESS FOR ITS PREPARATION - A curable composition which has photochromic properties and is based on an acrylic compound which can undergo free-radical polymerization, a cured product which is obtained by thermal or photochemical 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. | 09-11-2008 |
| 20100259133 | ENERGY CONVERTER PRODUCED FROM FILM-FORMING AQUEOUS POLYMER DISPERSIONS, PARTICULARLY POLYURETHANE DISPERSIONS, PARTICULARLY POLYURETHANE DISPERSIONS - 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. | 10-14-2010 |
| 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 |
