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PROCESSES FOR CORRELATING UV-VIS SPECTRA OF NORBORNENE COMPOUND TO POLYMERIZATION PROCESSES USING THE SAME, AND RELATED PURIFICATION METHODS AND COMPOSITIONS
PROCESSES FOR CORRELATING UV-VIS SPECTRA OF NORBORNENE COMPOUND TO POLYMERIZATION PROCESSES USING THE SAME, AND RELATED PURIFICATION METHODS AND COMPOSITIONS
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机译:用相同的方法将降冰片烯与聚合过程的紫外可见光谱相关联的方法,以及相关的纯化方法和组成
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摘要
The invention provides a process of polymerizing ethylene and at least one α- olefin, said process comprises polymerizing the ethylene and the at least one α-olefin in the presence of 5-ethylidene-2-norbornene, which comprises low levels of impurities, as determined by the absorbances at the following wavelengths: 320 nm and 343 nm. The invention also provides a method of increasing the catalysts efficiency, and a method of determining the expected catalyst efficiency, each in a polymerization of ethylene and at least one α-olefin in the presence of the 5- ethylidene-2-norbornene, which comprises low levels of impurities, as determined by the absorbances at the above wavelengths. The invention further provides a method of purifying 5-ethylidene-2-norbornene to form a purified 5-ethylidene-2-norbornene, which comprises low levels of impurities, as determined by the absorbances of the above wavelengths.
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