Abstract: Process for stopping and restarting a polymerization in a system having a gas phase fluidized bed or stirred bed reactor, a degassing vessel and a seedbed storage silo, by conducting a first polymerization in the reactor using a polymerization catalyst to produce a first polymer, stopping the polymerization and removing the first polymer from the reactor to the degassing vessel, and either: introducing from the seedbed storage silo into the reactor a different seed-bed compatible with a second polymerization, passing to the seedbed storage silo the first polymer from the degassing vessel to form a new seedbed in the storage silo, and conducting the second polymerization in the reactor to produce a second polymer; or passing to the reactor at least a portion of the first polymer from the degassing vessel to thereby form a new seedbed in the reactor, and conducting a polymerization in the reactor to produce polymer.

Abstract: The present invention relates to a process for stopping and restarting polymerisation in a polymerisation system comprising a gas phase fluidised bed or stirred bed reactor, a degassing vessel and a seedbed storage silo, said process comprising the steps of: a) Conducting a first polymerisation reaction in the reactor using a first polymerisation catalyst system to produce a first polymer, b) Stopping the first polymerisation reaction and removing at least the majority of the first polymer in the reactor to the degassing vessel, and either: c1) Introducing from the seedbed storage silo and into the reactor a seed-bed compatible with a second polymerisation reaction, said seed-bed being of a different material to the first polymer, d1) Passing to the seedbed storage silo at least a portion of the first polymer from the degassing vessel to thereby form a new seedbed in the storage silo, and e1) Conducting the second polymerisation reaction in the reactor to produce a second polymer; or c2) Optionally, maintaini

Abstract: The invention relates to a method and a device for producing an accumulator having a fixed electrolyte. The inventive method is characterized by introducing an electrolyte in a flowable form into the accumulator cell and fixing the electrolyte and forming the active mass simultaneously inside the accumulator cell. The device for carrying out the inventive method comprises a filler head (1), an acid reservoir (3), a thickener reservoir (4), a metering pump for the acid (6.1+6.2), a metering pump for the thickener (5.1+5.2) and a flowmeter for the thickener (9.1+9.2) and the acid (10.1+10.2).

Abstract: An airbag cover for receiving an airbag compressed into an airbag package for an airbag module of a motor vehicle is provided. The airbag cover comprising one or more precut sections of a flexible material connecting sites, by way of which regions of the at least one precut material section are connected to each other such that the at least one precut section forms a flexible cover that at least partially receives the airbag package. The airbag cover forms an outer cover of the airbag module which is at least in sections visible for a vehicle occupant when installed into a vehicle as intended, wherein the flexible airbag cover forms a most outer casing of the airbag package. At least some of the connecting sites are configured in a disconnectable such that the corresponding connecting sites are disconnected upon the inflation and deployment of the airbag as intended in the event of a crash.

Abstract: The invention relates to a method and a device for producing an accumulator having a fixed electrolyte. The inventive method is characterized by introducing an electrolyte in a flowable form into the accumulator cell and fixing the electrolyte and forming the active mass simultaneously inside the accumulator cell. The device for carrying out the inventive method comprises a filler head (1), an acid reservoir (3), a thickener reservoir (4), a metering pump for the acid (6.1+6.2), a metering pump for the thickener (5.1+5.2) and a flowmeter for the thickener (9.1+9.2) and the acid (10.1+10.2).