home About company Catalog news Contacts For clients Customer Login Forgot your password? check in Catalog Low pressure polyethylene (HDPE) Pipeline designation Injection molding Extrusion destination Film purpose High pressure polyethylene (LDPE) Suspension polyvinyl chloride (PVC) Polypropylene (PP) Finished products Polymer dyes and additives Low pressure polyethylene (HDPE) Polyethylene is an ethylene polymer. The most widespread synthetic polymer in the world. Thermoplastic. Chemically, frost-resistant. Does not dissolve at room temperature in organic solvents. It can be easily processed industrially on relatively uncomplicated hardware. The inventor of polyethylene is the German Hans von Pechmann, who received it in 1899 . But he found industrial application only in 1933 . The first application of polyethylene was in the production of telephone cables, and only then it began to be used in other areas (1950s). Currently, it is industrially produced in the form of two main classes: low-pressure polyethylene (HDPE) and high-pressure polyethylene (LDPE). In addition, there are several subclasses of polyethylene - linear high-pressure polyethylene, bimodal low-pressure polyethylene, ultra-high molecular weight polyethylene. High density polyethylene (HDPE) is sometimes called high density polyethylene (HDPE or HDPE - H igh D ensity P oly E thylene ) is prepared at a temperature of 120 - 150 C, pressure - 0.1 - 2 MPa, in the presence of catalysts (typically Ziegler -Natta). Three main technologies are used for producing low-pressure polyethylene: the reaction is carried out in suspension, the reaction is carried out in solution, and gas-phase polymerization is carried out. The most industrially demanded is the gas-phase production method. The resulting polymer has a degree of crystallinity - 80-90%, molecular weight - 940- 960 kg/ m 3 . HDPE is a tougher polymer than LDPE and is processed by extrusion, blow molding and injection molding. From it, film products, various containers, pipes, and molded products are obtained. © LLC "CENTROPOLIMER", 2009-2015 Address: 107023, Russia, Moscow, Semenovskiy per., 6 tel .: +7 (495) 225-83-46 fax: +7 (495) 287-47-01 Website development Saludo