Abstract: The present invention relates to a process for preparing a catalyst, a novel polymer and a process for preparing the polymer. In particular, the invention provides a process for preparing a homopolymer and/or copolymer having an irregular particle structure and a melt flow index (MFR 190/15) of from 1.3 g/10 min to 10 g/10 min, a molecular weight distribution Mw/Mn of from 3 to 30, a bulk density of from 0.05 g/cc to 0.4 g/cc and a particle size of from 5 ?m to 300 ?m, which comprises polymerizing the monomers in the presence of a mixed catalyst comprising a titanium component and an organic aluminum compound and the presence of a molar mass regulator.

Abstract: The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity Mw/Mn of from 3 to 30, a bulk density of from 0.05 g/cm3 to 0.5 g/cm3 and a particle size from 5 ?m to 300 ?m.

Abstract: Filled pelletized materials made from high- or ultrahigh-molecular-weight polyethylenes and process for their production Pelletized materials made from high- and/or ultrahigh-molecular-weight polyethylene are described. The pelletized materials comprise fillers and/or reinforcing materials and can be processed by processes known per se to give moldings. The pelletized materials may be produced on a specifically designed extruder.

Abstract: The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity Mw/Mn of from 3 to 30, a bulk density of from 0.05 g/cm3 to 0.5 g/cm3 and a particle size from 5 ?m to 300 ?m.

Abstract: The present invention relates to a novel polymer as binder for producing activated carbon filters. The polymer of the invention is a polyethylene homopolymer and/or copolymer having a melt flow index (MFI 190/15) of from 1.2 g/10 min to 10 g/10 min, a polydispersity Mw/Mn of from 3 to 30, a bulk density of from 0.05 g/cm3 to 0.5 g/cm3 and a particle size from 5 &mgr;m to 300 &mgr;m.

Abstract: The present invention relates to a process for forming a porous article. The process involves molding a shape from a molding powder comprising polyethylene polymer particles. The polyethylene polymer has a single modal molecular weight distribution. The molecular weight of the polyethylene polymer is within the range of about 800,000 g/mol to about 3,500,000 g/mol as determined by ASTM-D 4020. The particle size distribution of the particles of the polyethylene polymer are within the range of about 10 microns to about 1000 microns. Advantageously, the process provide a desirable processing window for producing articles with excellent porosity and strength. Porous articles made from the process are also disclosed.

Abstract: Compositions comprising elastomers and high-molecular-weight polyethylenes with irregular particle shape, process for their preparation, and their use

Abstract: Hydrophilically modified high and/or ultra-high molecular weight polyethylene (HMW-PE or UHMW-PE) coated with a mixture comprising 1-99.9% by weight of at least one water-soluble additive and 0.1 to 99% by weight of at least one water-insoluble additive, the content of the mixture being 0.1 to 10% by weight, based on the total weight of hydrophilically modified HMW-PE and/or UHMW-PE and a process for the preparation of the hydrophilically modified HMW-PE and/or UHMW-PE and its use for the production of porous moldings.