Abstract
ABSTRACTThe majority of EPDM materials are produced by traditional Ziegler–Natta/Vanadium catalyst and process technology. In recent decades, EPDM metallocene catalyst technologies have increased the efficiency of production and quality of materials. For the next generation, Dow introduces its Advanced Molecular Catalyst technology that further expands the molecular capability to produce new EPDMs for production of automotive sponge weather-strip (WS). These new EPDMs provide homogeneous mixing during production, faster curing and foaming during processing, and finally, an excellent surface to the EPDM automotive WS. The design and microstructure of these EPDMs are tailored to impart superior collapse resistance to the extruded profile that results in the successful production of complex WS. Case studies are also shown that demonstrates the advantages that the new EPDM brings to the automotive profile producers.
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