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A process for the ethylene polymerization in the gas phase for the preparation of linear polyethylene having a narrow molecular weight distribution.
A process for the ethylene polymerization in the gas phase for the preparation of linear polyethylene having a narrow molecular weight distribution.
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机译:一种气相中乙烯聚合的方法,用于制备分子量分布窄的线性聚乙烯。
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摘要
A process for the manufacture of a linear polyethylene with narrow molecular-weight distribution comprising polymerizing ethylene alone or a mixture of ethylene and an alpha-olefin in which ethylene represents at least about 70% by weight of the total monomers involved, in a gas-phase polymerization medium in the presence of a catalytic component containing at least one transition metal, magnesium, and a halogen, a co-catalyst comprising an alkylaluminum compound, and a monoether, the monoether having the general formula R'OR'', wherein R' and R'' are the same or different and each is a C1 to C8 linear or branched hydrocarbon radical or being a cyclic monoether with the oxygen forming a ring having 4 to 12 carbon atoms.
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