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QUADRANT EPP AG

QUADRANT EPP AG Patent applications
Patent application numberTitlePublished
20120000307COMPOSITE GEAR BLANK AND METHOD FOR MANUFACTURING SAME - Composite gear blanks are manufactured by placing a rigid centerpiece in a mold, optionally inertizing the mold, filling the mold by adding a liquid reactive mixture around the centerpiece, applying static pressure to the mold and polymerizing the reactive mixture so as to form a plastic outer part surrounding the centerpiece. The composite gear blanks thus made have improved values of normal and shear adhesion strength both at room temperature and at elevated temperatures of up to 120° C. and are particularly suited for making worm gear parts of automotive electronic power steering systems.01-05-2012
20110070454ANTI-FOULING ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE COMPOSITIONS AND METHODS OF USING THE SAME - It has now been surprisingly and unexpectedly discovered that a combination of polychlorophenoxyphenol, a silver-containing biocide, and an organopolysiloxane, when added to UHMWPE, renders the UHMWPE resistant to both soft and hard fouling. The polychlorophenoxy phenol is preferably 2.4.4′-trichloro-2′-hydroxy-diphenylether and the metal-containing biocide is preferably a silver zeolite.03-24-2011
20100173030PRODUCTION OF UHMWPE SHEET MATERIALS - Wide panels of UHMWPE having exceptional flatness and surface quality are ram extruded through a slit die equipped with a plurality of individually adjustable cooling zones proximate the panel exit slit and transverse to the machine direction which cool the by a back pressure device and preferably a vertical movement restraint. The process is robust and can be run for long product campaigns.07-08-2010

Patent applications by QUADRANT EPP AG