Abstract: The present invention relates to a process forgasphase polymerisation of olefins with the aidofa supported chromium oxide based catalyst. The present invention also relates to a chromium high molecular weight polyethylene powder obtainable by the claimed gas phase polymerisation process. The present invention further relates to a chromium high molecular weight polyethylene pellet having improved properties.

Abstract: A centralized diagnostics management tool is disclosed that facilitates centralized monitoring of distributed components of a supervisory process control and manufacturing information application. The centralized diagnostics management tool includes a diagnostics management console shell that is customized according to a set of software modules that interface to data sources to populate views supported by the console shell. The console shell includes a set of view templates including controls for manipulating graphically displayed representations of data rendered by the distributed components. The console shell also includes an interface for exchanging requests and data with an extensible set of software modules that provide data links to ones of the set of distributed components. The software modules also define the customizable portions of the view rendered by the console shell.

Abstract: A process for polymerizing olefins in the presence of a Ziegler-Natta type catalyst or a catalyst based on chromium oxide using a gas-phase fluidized-bed reactor (1) having a recycle line (5) for removing the olefin-containing gas from the top of the reactor and returning it to the bottom of the reactor, the recycle line having at least one heat exchanger (7,10) for cooling the olefin-containing gas, which process comprises introducing an organometallic compound, as a mixture or as a solution in at least one C.sub.3 to C.sub.12 liquid olefin, into the recycle line at a point upstream of a heater exchanger (10).