Abstract: What are described are shaped hot-cure flexible PU foam articles, preferably mattresses and/or cushions, wherein the hot-cure flexible polyurethane foam has been obtained by reaction of at least one polyol component and at least one isocyanate component in the presence of at least one compound of formula (1a) and at least one compound of formula (1b) and at least one blowing agent and at least one catalyst.

Abstract: Shaped flexible PU foam articles, preferably mattresses and/or cushions, may use a flexible polyurethane foam obtained by reaction of at least one polyol component and at least one isocyanate component in the presence of at least one blowing agent and one or more catalysts that catalyze the isocyanate-polyol and/or isocyanate-water reactions and/or isocyanate trimerization and further additives, wherein the additives include one or more organic esters.

Abstract: What are described are shaped hot-cure flexible PU foam articles, preferably mattresses and/or cushions, wherein the hot-cure flexible polyurethane foam has been obtained by reaction of at least one polyol component and at least one isocyanate component in the presence of at least one compound of formula (1a) and at least one compound of formula (1b) and at least one blowing agent and at least one catalyst.

Abstract: Described are (a) a process for production of polyurethane foam by reacting one or more polyol components with one or more isocyanate components, wherein wax having a congealing point in the range from 40° C. to 90° C. is employed as an additive, (b) a polyurethane foam obtainable by said process, (c) the use of waxes having a congealing point in the range from 40° C. to 90° C. as an additive in the manufacture of polyurethane foams to coarsen the foam structure, and also (d) a polyurethane foam production composition containing a wax having a congealing point in the range from 40° C. to 90° C.

Abstract: Described are (a) a process for production of polyurethane foam by reacting one or more polyol components with one or more isocyanate components, wherein wax having a congealing point in the range from 40° C. to 90° C. is employed as an additive, (b) a polyurethane foam obtainable by said process, (c) the use of waxes having a congealing point in the range from 40° C. to 90° C. as an additive in the manufacture of polyurethane foams to coarsen the foam structure, and also (d) a polyurethane foam production composition containing a wax having a congealing point in the range from 40° C. to 90° C.

Abstract: A mixture-lubricated internal combustion engine has a cylinder (2) in which a combustion chamber (3) is formed. The combustion chamber (3) is delimited by a piston (5) mounted to move back and forth. The piston (5) drives a crankshaft (7) rotatably journalled in a crankcase (4). The engine has an inlet channel (9) which supplies fuel and combustion air into the combustion chamber (3) as well as an exhaust outlet (13) from which exhaust gases flow from the combustion chamber. The intake inlet (11) and the exhaust outlet (13) are valve controlled. A flow connection is present between the crankcase (4) and the inlet channel (9). A good idle stability and a good idle acoustic of the engine are achieved in that at least one control valve (23, 33, 43, 63) is mounted in the flow connection.

Abstract: The invention relates to a method for performing predistortion of a radio frequency signal, said radio frequency signal comprising a wanted signal and a first and a second intermodulation distortion signal sideband, comprising: defining a predistortion window, positioning said predistortion window asymmetrically around said radio frequency signal, predistorting said radio frequency signal within the positioned predistortion window.

Abstract: The present invention provides a coupling arrangement for coupling out a RF signal of a transmission line connecting a first and a second RF unit, such like an IQ modulator and a power amplifier. The coupling arrangement comprises first and second coupling means that are adapted to be coupled to respective first and second transmission lines connecting the RF units. The first and second transmission lines separately provide transmission of respective first and second RF signals forming a differential RF signal. Preferably, the first coupling means are adapted to provide coupling out of the first RF signal, thereby inevitably affecting transmission of the first RF signal. The second coupling means provide a substantially equal impact on the transmission of the second RF signal, such that the net impact of first and second coupling means on the differential RF signal nearly vanishes.

Abstract: A mixture-lubricated internal combustion engine has a cylinder (2) in which a combustion chamber (3) is formed. The combustion chamber (3) is delimited by a piston (5) mounted to move back and forth. The piston (5) drives a crankshaft (7) rotatably journalled in a crankcase (4). The engine has an inlet channel (9) which supplies fuel and combustion air into the combustion chamber (3) as well as an exhaust outlet (13) from which exhaust gases flow from the combustion chamber. The intake inlet (11) and the exhaust outlet (13) are valve controlled. A flow connection is present between the crankcase (4) and the inlet channel (9). A good idle stability and a good idle acoustic of the engine are achieved in that at least one control valve (23, 33, 43, 63) is mounted in the flow connection.

Abstract: The present invention provides a coupling arrangement for coupling out a RF signal of a transmission line connecting a first and a second RF unit, such like an IQ modulator and a power amplifier. The coupling arrangement comprises first and second coupling means that are adapted to be coupled to respective first and second transmission lines connecting the RF units. The first and second transmission lines separately provide transmission of respective first and second RF signals forming a differential RF signal. Preferably, the first coupling means are adapted to provide coupling out of the first RF signal, thereby inevitably affecting transmission of the first RF signal. The second coupling means provide a substantially equal impact on the transmission of the second RF signal, such that the net impact of first and second coupling means on the differential RF signal nearly vanishes.

Abstract: The invention relates to the use of metal salts of ricinoleic acid or solutions thereof in water or in organic solvents in producing polyurethane foams.