Abstract: The invention relates to process for preparing a block copolymer comprising polymerizing in an aqueous medium under reversible-addition-fragmentation chain-transfer polymerization conditions a) a first monomer composition comprising methacrylic acid in an amount of 0.0 to 40.0 mol-%, and at least 50.0 mol-% of one or more ethylenically unsaturated polymerizable monomers having a water solubility of more than 500 g/l at 20° C., selected from monomers having ether groups and monomers having hydroxyl groups, to prepare a first polymer block, and b) a second monomer composition comprising at least 60.0% by weight of one or more ethylenically unsaturated polymerizable monomers having a water solubility of less than 50 g/l at 20° C. to prepare a second polymer block.

Abstract: A fixing device (200) for fixing in an opening in a wall of a vehicle includes a support element (210) with at least one support lug (220). The fixing device (200) also includes a retaining element (230) with at least one retaining arm (240) for fixing the fixing device (200) to the wall. To fix the fixing device (200) in relation to the support element (210), the retaining element (230) runs through the support element (210) and can rotate, the support lug (220) being designed to block the rotation of the support element (210).

Abstract: The invention relates to a fixing device (200) for fixing in an opening in a wall of a vehicle, said fixing device (200) having a support element (210) with at least one support lug (220). The fixing device (200) also comprises a retaining element (230) with at least one retaining arm (240) for fixing the fixing device (200) to the wall. To fix the fixing device (200) in relation to the support element (210), the retaining element (230) runs through the support element (210) and can rotate it the latter, the support lug (220) being designed to block the rotation of the support element (210).

Abstract: An active occupant restraint system for a motor vehicle has a central control unit and a plurality of active restraining devices with associated triggering units which are connected to the central control unit for the transmission of ignition information by an ignition bus line system having at least one ring line and/or at least one stub line. The triggering units within a respective ring and/or stub line of the ignition bus line system are arranged as a function of a predeterminable protection significance priority of the restraining devices assigned to the triggering units such that, with a decreasing protection significance priority, they are situated farther away from the central control unit.