Method of preparing epdm copolymer
AssigneesSK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
InventorsByoung Tak YIM, Jeong Hwan KIM
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Abstract
A method of preparing an EPDM copolymer by solution polymerization using a Ziegler-Natta catalyst system, in which the Ziegler-Natta catalyst system includes VOCl3, ethylaluminum sesquichloride (EASC), and a straight chain or branched chain C4-C6 alkyl amine as a catalyst modifier. The method includes performing polymerization by adding the catalyst modifier before injecting VOCl3 or by adding VOCl3 and the catalyst modifier simultaneously.
Claims20
A method of preparing an ethylene propylene diene (EPDM) copolymer by solution polymerization using a Ziegler-Natta catalyst system,
- wherein the Ziegler-Natta catalyst system includes VOCl3, ethylaluminum sesquichloride (EASC), and a straight chain or branched chain C4-C6 alkyl amine as a catalyst modifier, and the method includes:
- performing polymerization by adding the catalyst modifier before injecting VOCl3 or by adding VOCl3 and the catalyst modifier simultaneously.
A polymer comprising:
- propylene,
- ethylene, and
- 5-ethylidene-2-norbornene (ENB),
- wherein a content ratio of the propylene, the ethylene, and the ENB ranges from 20 to 40 wt % of the propylene, 50 to 70 wt % of the ethylene, and 5 to 10 wt % of the ENB.
Dependencies are inferred from the claim text.