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Controlling Polyolefin Properties by In-Reactor Blending, 1-Polymerization Process, Precise Kinetics, and Molecular Properties of UHMWPE Polymers

机译:通过反应器内共混,1-聚合过程,精确的动力学和UHMWPE聚合物的分子性能控制聚烯烃的性能

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摘要

A multipurpose reactor setup for catalytic slurry ethylene polymerization is presented. With the developed multi-stage polymerization (MSP) method the production of polyolefin inreactor blends is accessible. Precisely controlled polymerizations are executed at isothermal, isobaric, and isoperibolic steady state conditions in a dynamic power compensated reactor. The described system realizes fast (<10s) and constant temperature control (±0.1 K), applying electrical heat compensation in combination with mass flow technique. Single- and MSP with a highly active ZN-catalyst are applied to produce uniand bimodal polyethylenes with controlled fractions of molecular weight (UHMW and medium-MW PE). Polymerization kinetics and molecular weights (IV, GPC) are presented.
机译:提出了用于催化淤浆乙烯聚合的多用途反应器装置。通过开发的多阶段聚合(MSP)方法,可以生产聚烯烃反应器共混物。精确控制的聚合反应是在动态功率补偿反应器中的等温,等压和等代谢稳态条件下进行的。所描述的系统通过结合电热补偿和质量流技术,实现了快速(<10s)和恒温控制(±0.1 K)。具有高活性ZN催化剂的单和MSP可用于生产分子量可控的单峰和双峰聚乙烯(超高分子量聚乙烯和中分子量聚乙烯)。给出了聚合动力学和分子量(IV,GPC)。

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