Abstract: A polymer composition for producing gel extruded articles is described. The polymer composition contains one or more high density polyethylene polymers combined with one or more olefinic copolymers. In order to form gel extruded articles, the polymer composition is combined with a plasticizer. In one embodiment, the polymer composition is used to form a porous membrane for use as a separator in electronic devices. The presence of the olefinic copolymer can increase the adhesive characteristics of membranes made from the composition when placed in contact with an anode and/or a cathode. When producing porous membranes, the olefin copolymer can also decrease the shutdown temperature and increase wettability properties.

Abstract: A hydrophilic porous polymer film is disclosed that is particularly well-suited for use in an electrolysis cell producing hydrogen. The porous polymer film contains one or more high-density polyethylene polymers in combination with one or more hydrophilic additives. The porous film can be formed through a gel extrusion process or through sintering. Extremely thin films can be produced that have desired permeability characteristics, hydrophilicity characteristics, and mechanical characteristics necessary for use in the cell.

Abstract: A polymer composition is disclosed that is particularly formulated for producing gel extruded articles containing a high density polyethylene polymer. In one embodiment, the polymer composition is used to produce a porous membrane or film well suited for use as an ion separator in an electronic device, such as a battery. The polymer composition contains a molecular weight retention package that preserves the molecular weight of the polyethylene polymer during extrusion.

Abstract: A polymer composition for producing gel extruded articles is described. The polymer composition contains at least three different polyethylene polymers, namely a lower molecular weight polyethylene polymer, a mid-range molecular weight polyethylene polymer, and a high molecular weight polyethylene polymer. Combining the different polyethylene polymers in different ratios can optimize not only mechanical properties but improve processing.

Abstract: A mobile conference system including a first mobile master hands-free unit and a second mobile slave hands-free unit, each having a microphone, a loudspeaker, a battery unit, an operating unit, a lighting unit, and a first transmitting/receiving unit for bidirectional wireless communication between the first and second mobile hands-free units. The first mobile hands-free unit includes a second transmitting/receiving unit for wireless bidirectional audio communication with an external unit.

Abstract: A mobile conference system including a first mobile master hands-free unit and a second mobile slave hands-free unit, each having a microphone, a loudspeaker, a battery unit, an operating unit, a lighting unit, and a first transmitting/receiving unit for bidirectional wireless communication between the first and second mobile hands-free units. The first mobile hands-free unit includes a second transmitting/receiving unit for wireless bidirectional audio communication with an external unit.