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Freidank
Daniel Freidank, Lemfoerde DE
| Patent application number | Description | Published |
|---|---|---|
| 20100227939 | FOAMED POLYURETHANES HAVING IMPROVED FLEXING ENDURANCE PROPERTIES - The present invention relates to foamed polyurethane obtainable by mixing a) polyisocyanates, b) relatively high molecular weight compounds having groups reactive toward isocyanate groups, c) solid particles, d) blowing agents, e) if appropriate, chain extender, crosslinking agent or mixtures thereof, f) if appropriate, catalyst and g) if appropriate, other additives to give a reaction mixture and allowing the reaction mixture to react to completion, the proportion of chain extender being less than 6% by weight, based on the total weight of the components a) to f), the content of solid particles being greater than 15% by weight, based on the total weight of the components a) to f), and the average functionality of the relatively high molecular weight compounds having groups reactive toward isocyanate groups being less than 2.5. The present invention furthermore relates to a molding comprising a foamed polyurethane according to the invention, a process for the preparation of the foamed polyurethane according to the invention and the use of a molding according to the invention as a shoe sole. | 09-09-2010 |
| 20110021652 | COARSE-CELL POLYURETHANE ELASTOMERS - The present invention relates to an open-cell polyurethane foam comprising polyester and polyether structures and having a density of 70 to 300 g/L, 1 to 20 cells/cm, a rebound intensity greater than 30%, an elongation at break of greater than 200%, a tear propagation resistance of greater than 1.2 N/mm and a tensile strength of greater than 200 kPa. The present invention further relates to a process for producing inventive open-cell polyurethane sponges and to the use thereof as a pipe cleaning sponge. | 01-27-2011 |
| 20110065840 | PROCESS FOR PREPARING POLYOL DISPERSIONS - The present invention relates to a dispersion comprising | 03-17-2011 |
Daniel Freidank, Ludwigshafen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090209671 | METHOD FOR THE PRODUCTION OF RIGID POLYURETHANE FOAM - The invention relates to a process for producing rigid polyurethane foams by reacting | 08-20-2009 |
Sebastian Freidank, Lubeck DE
| Patent application number | Description | Published |
|---|---|---|
| 20100163540 | Method for Laser Machining Transparent Materials - A method for machining a transparent material by the non-linear absorption of pulsed laser radiation, in the region of a laser focus, includes the following steps: a laser wavelength of between 300 and 1000 μm is selected; and laser impulses having a temporally flat beam profile are applied. The method is characterized in that the irradiation intensity is selected from an interval predetermined for the material to be machined, in which plasma is formed without plasma luminescence. An apparatus for laser treating a transparent material includes structure to set an irradiance and inspect the treatment as being within a defined interval. | 07-01-2010 |