Patent application number | Description | Published |
20080199621 | TWO-CONSTITUENT POLYURETHANE COMPOSITION HAVING HIGH EARLY STRENGTH - The invention relates to a two-constituent composition, wherein the first constituent (A) contains at least one polyurethane prepolymer which has isocyanate end groups and is produced from at least one aromatic polyisocyanate and at least one polyol, and at least one polyaldimine which can be obtained from at least one polyamine having aliphatic primary amino groups and at least one aldehyde which, in position α in relation to the carbonyl group, does not have any C—H groups. The second constituent (B) contains water which is bound to a carrier material. The inventive composition is characterised in that it exhibits a high early strength, and hardens quickly, thus not forming any bubbles. | 08-21-2008 |
20090068479 | Moisture-reactive adhesive compositions with very low temperature dependency of the shear modulus - The present invention relates to moisture-reactive adhesive compositions which comprise a specific dialdimine of the formula (I) and also a polyurethane polymer P1 which is liquid at room temperature and contains isocyanate groups. These compositions are notable for a very low temperature dependency of the shear modulus, i.e. after 7 days' storage at room temperature and 50% relative humidity they feature a ratio of the shear modulus measured at −20° C. to the shear modulus measured at 23° C. of less than 1.7. | 03-12-2009 |
20090092840 | Catalysis System - A two-component adhesive or sealant composition consists of a first component (K1) comprising a prepolymer P, which displays an isocyanate group, and an acceleration component (K2). The said acceleration component (K2) displays a catalyst, which catalyzes the reaction of isocyanate groups and which is a lead, zinc, or iron (III) complex, as well as compounds displayed on isocyanate-reactive groups that are at most 1% by weight. In particular, adhesives with a high cure velocity and good adhesion can be obtained and adapted very easily to ambient conditions. | 04-09-2009 |
Patent application number | Description | Published |
20080277213 | ROTOR BRAKE FOR A ROTARY-WING AIRCRAFT - A rotor brake for a rotary-wing aircraft includes a rotor shaft, a braking-force actuator configured to be hydraulically actuated, a braking-force pick-up element connected to the rotor shaft and operationally connected to the braking-force actuator, an electromechanical piston control element, and a first hydraulic line connecting the electromechanical piston control element to the braking-force actuator so that the braking-force actuator can be actuated electrohydraulically by the electromechanical piston control element. | 11-13-2008 |
20080315725 | Force Generator - A force generator is configured for attachment to a structure in order to controllably introduce vibrational forces into the structure in order to influence the vibration thereof. The force generator encompasses a flexural arm that is fastenable at least at one end to the structure; and an inertial mass that is coupled to the flexural arm remotely from the fastening end of the flexural arm; the flexural arm being equipped with at least one electromagnetic transducer, and a driving system being provided for the transducer, which system is set up such that by driving the transducer, it warps the flexural arm with the inertial mass and the transducer, and thereby displaces the inertial mass, in such a way that vibrational forces of variable amplitude, phase, and frequency are introducible into the structure. | 12-25-2008 |
20090001223 | Flexible Control Surface for an Aircraft - A flexible control surface ( | 01-01-2009 |
20090079301 | Three-Dimensional Stack-Type Piezo Element and Piezoelectric Actuator Having Such a Stack-Type Piezo Element - A three-dimensional stack-type piezo element has at least one surface that is shaped perpendicular to layer planes of the stack, so that, at least in sections, it is not parallel to a stacking direction of the piezo element. | 03-26-2009 |