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Micromixing enhanced synthesis of HRPIBs catalyzed by EADC/bis(2-chloroethyl)ether complex

机译:EADC /双(2-氯乙基)醚配合物催化微混合增强的HRPIBs合成

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In this work, a micromixing module was utilized in the polymerization of isobutylene (IB) initiated by tert-butyl chloride (t-BuCl) and catalyzed by ethylaluminum dichloride (EADC)/bis(2-chloroethyl)ether (CEE) complex for the synthesis of highly reactive polyisobutylene (HRPIB). Better micromixing performance resulted in HRPIB with narrower molecular weight distribution, where the PDI could be decreased from 3.5 without micromixing module to 2.5 or less. The polymerization rate also increased while the molecular weight and content of exo-olefin end groups of HRPIBs could be adjusted conveniently by the ratio of CEE to EADC and monomer concentration. A dynamic mechanism was proposed to explain the effects of micromixing on the enhanced HRPIB synthesis.
机译:在这项工作中,微混合模块用于由丁基氯( t -BuCl)引发并由二氯化乙基铝(EADC)催化的异丁烯(IB)聚合中/双(2-氯乙基)醚(CEE)配合物,用于合成高反应性的聚异丁烯(HRPIB)。更好的微混合性能导致HRPIB具有更窄的分子量分布,其中PDI可以从没有微混合模块的3.5降低到2.5或更小。通过CEE与EADC的比例和单体浓度可以方便地调节HRPIBs的分子量和 exo -烯烃端基含量,从而提高了聚合速率。提出了一种动力学机制来解释微混合对增强的HRPIB合成的影响。

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