环烯烃
- 名Cycloolefin;cyclic alkene
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用超临界CO2制备环烯烃共聚物共混物微孔材料
Preparation and characterization of microcellular cyclic olefin copolymer blends using supercritical co_2
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高性能环烯烃共聚物(COC)在许多领域具有广泛的应用前景,聚合工艺的核心就是催化剂的研发,开发具有高活性的可控聚合催化剂是目前国际上研究的热点。
High performance cycloolefin copolymers ( COC ) have broad applications in many areas . The topic is to exploit highly active catalysts for controllable ethylene polymerization , which has become one of hot points in this field .
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轻质馏分脂肪烃主要为环烯烃和二烯烃等烯烃,烷烃中以环烷烃居多;
Aliphatic in light fraction is mainly alkene and cycloalkyl substance .
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大环烯烃参与的开环易位共聚合及环状聚合物的合成与表征
Ring-Opening Metathesis Copolymerization of Macrocyclic Olefin and Synthesis of Cyclic Polymers
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单活性中心催化剂催化乙烯共聚及环烯烃聚合的研究
The Copolymerization of Ethylene and Polymerization of Cycloolefin Catalyzed by Single-Site Catalysts
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典型环烯烃共聚物材料,比高密度聚乙烯和聚丙烯模量较高。
Typical COC material will have a higher modulus than HDPE and PP.
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环烯烃共聚物的自然形态,类似玻璃。
COC has a transparency similar to glass in its natural form .
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环烯烃共聚物的制备过程研究
Study on Preparation Process of Cycloolefin Copolymer
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综述了环烯烃加成聚合的催化剂体系及其聚合物的研究和开发状况。
The research and development of addition polymerization ofcycloolefins and the properties of polycycloolefins are reviewed .
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茂金属环烯烃聚合物技术进展
Development of Metallocene Cycloolefin Polymer Technology
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而高沸点的环烯烃及其醇类却随着蒸馏时间的增加而增加。因而可以通过控制蒸馏时间,提高互叶白千层精油的质量,同时可以降低能耗。
Thus , improved oil quality and decreased energy consumption could be resulted by controlling the duration of distillation .
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与二元共聚类似,随着环烯烃/α-烯烃比例增大,三元共聚活性降低而环烯烃插入率增加。
Similar to ethylene-norbornene copolymerization , with increasing the cyclic olefin / a-olefin ratio , the activity decreases and the cyclic olefin incorporation increases for terpolymerization .
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评述了茂金属环烯烃聚合物的最新进展,讨论了环烯烃聚合及其与乙烯共聚合的茂金属催化体系、聚合机理、聚合工艺以及茂金属环烯烃共聚物的性能及应用。
The latest progresses in cycloolefin polymer with metallocene catalysts are reviewed . The metallocene catalytic system , polymerization mechanism and polymerization process for the addition polymerization of cycloolefins , and properties and applications of cycloolefin copolymer are discussed .
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介绍了含氧、氮等杂原子单活性中心催化剂,包括后过渡金属催化剂,应用于乙烯、α-烯烃、环烯烃及其他极性单体的聚合。
This paper introduced the progress in studies on the single site catalysts containing heteroatom like oxygen and nitrogen , including the late transition metal catalysts , and their applications in the polymerization of ethylene , α - olefins , cyclic olefins and other polar monomers .
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Fe、Ni、Co-吡啶配合物对环多烯烃的均相选择催化氢化
Homogeneous Catalytic Selective Hydrogenation of Cyclic Polyenes by ( Fe , Ni , Co ) - Pyridine Complexes
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研究了环多烯烃的烯键在M(Fe,Ni,Co)-吡啶配合物存在下的均相选择催化氢化。
The homogenous catalytic selective hydrogenation of cyclic polyenes by M ( Fe , Ni , Co ) & pyridine complexes was studied .
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讨论了配合物中心元素和环多烯烃构造对催化氢化反应的影响,同时提出了反应过程的机理。
Influences of the central elements of the complexes on the reaction were discussed and the catalytic reaction mechanism was proposed .
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开环移位聚合制备环烯烃聚合物的新进展
Advances in preparation of cycloolefin polymers by ring-opening metathetic polymerization