Polyolefin elastomers target TPOs, wire & more. (Keeping Up With Materials).Several developmental grades of Engage ethylene/butene polyolefin polyolefin synthetic material used for surgical sutures, e.g. in polyethylene and polypropylene sutures. elastomers (POEs) open up new applications in automotive TPOs, wire and cable, and extruded profiles. These pelletized grades reportedly offer improved processability, impact toughness, and melt strength. They are available from DuPont Dow (Direct OverWrite) See magneto-optic disk. Elastomers, Wilmington, Del. The company has an array of new POEs in the 1-5 MI range that have either narrow or broad molecular-weight distributions. Commercial production of five selected grades will begin in 2003 with the start-up of a new 300-million-lb/yr plant in Plaquemine, La. * ENX ENX European Network Exchange ENX Eneighborhoods Document (File Extension) ENX E-Neighborhoods Document 7467, is a high-performance grade of 1 MI and 0.863 g/cc. It is said to offer superior impact properties as a modifier (programming) modifier - An operation that alters the state of an object. Modifiers often have names that begin with "set" and corresponding selector functions whose names begin with "get". in TPOs. * ENX 7458, with 2.5 MI and 0.863 g/cc, is a broad-MWD grade for impact modification that reportedly offers excellent flow, better dispersion dispersion, in chemistry dispersion, in chemistry, mixture in which fine particles of one substance are scattered throughout another substance. A dispersion is classed as a suspension, colloid, or solution. , and improved impact strength. It is said to be useful in high-flow TPOs for large, thin-walled applications like fascias. * ENX 7447 (5 MI, 0.865 g/cc) is a high-flow grade for polymer modification with other elastomers. * ENX 7380 is a 45 Mooney (0.3 MI), 0.870 g/cc grade said to break new ground with a high MW, improved toughness, and better melt strength. It serves as an extender See Media Center Extender, bus extender and DOS extender. for SEBS and provides improved gloss control in TPOs. It's suitable for extrusion of wire and cable. * ENX 7270 (0.8 MI, 0.880 g/cc) is a GP grade for polymer modification that is said to provide a good cost/performance balance. Tel: (800) 853-5515, www.dupont-dow.com |
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