EPDM ELASTOMERS FOR HIGHLY EXTENDED COMOUNDS AND METHOD OF PREPARING THEREOF

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PURPOSE : An ethylene-alpha-olefin-diene elastomer and a manufacturing method thereof are provided to secure the excellent roll workability and extrusion processibility, and to improve the mechanical property of the elastomer during a highly extended combination. CONSTITUTION : A manufacturing method of an ethylene-alpha-olefin-diene elastomer comprises a step of forming the elastomer using a Ziegler-Natta catalyst system at a reactor including directly connected first and second reactors. The ethylene-alpha-olefin-diene elastomer contains 50~70wt% of manufacturing component for the first reactor, and 30~50wt% of manufacturing component for the second reactor.