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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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阳离子烷基钪配合物催化体系催化乙烯与丙烯共聚合的研究
DOI: 10.3724/SP.J.1105.2013.12414, PP. 649-653
Keywords: 稀土配合物,乙烯,丙烯,共聚合
Abstract:
双烷基钪配合物LSc(CH2SiMe3)2(L=(2,6-iPr2C6H3)NC(Me)CHPPh2N(2,6-Me2C6H3))在助催化剂[Ph3C]B(C6F5)4］的作用下能够高活性地催化乙烯和丙烯共聚.在反应温度30℃和乙烯与丙烯常压(1.0×105Pa)下聚合,共聚活性能够达到7.5×105g(PE)mol-1h-1(105Pa)-1.单体的竞聚率分别为rE=29.75和rP=0.015.13C-NMR和DSC分析表明所得到的乙丙共聚物是弹性体,且丙烯单体无规分布在共聚物链中.
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