Characteristics of ethylene polymerization over Ziegler–Natta/metallocene catalysts

Thermal Behavior of Polyethylene Reactor Alloys Polymerized by Ziegler–Natta/Late Transition Metal Hybrid Catalyst

“…Results obtained from ICP analysis of the synthesized hybrid catalysts (Table ) show that as the LTM/ZN mixing ratio increased from 0.01 to 0.04 the amount of loaded Fe on the MgCl 2 support (within ZN catalyst) increased from 0.06 to 0.34 and a proportional decrease was detected for Ti from 2.19 to 2.05, respectively. Similar behaviors can be found elsewhere …”

“…The catalytical routes have more variety due to multiple combinations that can be made in the making or selection of the catalysts. For example, using multi‐catalyst or hybrid systems are of this routes in which when polymerization conditions are met, each of the various catalytic sites are responsible for producing polymers with different microstructure, e.g., polymers with different molecular weight distributions, which can result in bimodal polymers . An alternative strategy is loading the other catalyst on polymer particles; in this case the primitive polymer particles act as a reaction bed for the loaded catalyst.…”

Uniform, Axial‐Orientation Alignment of One‐Dimensional Single‐Crystal Silicon Nanostructure Arrays

“…In situ polymerization using a hybrid catalyst is a useful method for preparing LPE/BPE blend polymers. Desired structures of polyethylene can be achieved by optimizing the various catalyst properties 3–9…”

Synthesis of (co-)polyethylene with broad molecular weight distribution by the heterogenous Ziegler–Natta catalysts via one-pot strategy

“…For the polyethylene with broad MWD, for example, PE100, the higher molecular weight segment gives mechanical strength and the lower molecular weight segment is responsible for rheological properties. These make it a desirable polymer material for applications, several approaches are involved in producing PE with broad MWD such as physical blending by using PE products with different molecular weight [12,13], synthesizing by hybrid catalysts [14][15][16] and by multi-pot processes [17,18]. Debras [19] reported a method for producing polyethylene with broad MWD.…”