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Frankfurt a., Germany

Patent
Basell Polyolefine GmbH | Date: 2014-02-04

A multilayer fiber ABA comprising:


Patent
Basell Polyolefine GmbH | Date: 2013-10-22

Polyethylene composition with improved balance of environmental stress cracking resistance (FNCT) and impact resistance (Charpy), particularly suited for preparing pipes, said composition having the following features:


Patent
Basell Polyolefine GmbH | Date: 2014-05-13

A process for polymerizing olefins in at least two serially connected gas-phase polymerization reactors, the process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor comprising the steps of:


Patent
Basell Polyolefine GmbH | Date: 2014-05-13

A process for the gas-phase polymerization of ethylene or a mixture of ethylene and one or more 1 olefins in the presence of a polymerization catalyst system comprising the steps


Patent
Basell Polyolefine GmbH and Equistar Chemicals | Date: 2014-02-26

Embodiments of the present disclosure relate to a method of preparing polyethylene compositions comprising polymerizing ethylene in a first gas-phase reactor and polymerizing ethylene in a second gas-phase reactor in the presence of hydrogen; wherein at least one of the first or second gas-phase reactors comprises a first and second polymerization zone; wherein a hydrogen pressure of the first and second polymerization zones are different such that at least a portion of the second ethylene cycles through the first and second polymerization zones and a gas mixture of each polymerization zone is partially or totally prevented from entering the other zone.

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