Study on ethylene (co)polymerization and its kinetics catalyzed by a reversible crosslinked polystyrene‐supported metallocene catalyst

Wang, Wen-Qin; Wang, Li; Wang, Jianfeng; Ma, Zhenli; Wang, Jianjun

doi:10.1002/app.21887

Cited by 8 publications

(4 citation statements)

References 15 publications

(10 reference statements)

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“…With the increase in molecular weight of the synthesized PE, the melting point and crystallization temperature ( T c ) also increase 21,31. The high melting point and crystallization temperature indicate the less branched structure of the resulting PE 27,32…”

Section: Resultsmentioning

confidence: 99%

Poly(amic acid)‐Supported Heterogeneous Titanium‐Based Ziegler‐Natta Catalyst for Ethylene Polymerization in a Slurry Process

Kalita¹,

Konwer²,

Dolui³

2012

Adv Polym Technol

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ABSTRACT:The synthesis of a poly(amic acid) (PAA)-supported Ziegler-Natta catalyst (PAA-TiCl 4 ) by the reaction of PAA and titanium tetrachloride (TiCl 4 ) is reported. For ethylene polymerization, three catalysts were synthesized by varying the TiCl 4 /PAA weight ratio in a hexane medium. The resulting catalysts were characterized by Fourier-transformed infrared (FT-IR), ultraviolet (UV), scanning electron microscopy and energy dispersive x-ray detector (SEM-EDX), and x-ray diffraction analysis (XRD). The acidity of the catalysts in an acetone/water solution was measured by a pH meter. Thermogravimetric analysis reveals that catalysts are stable up to 110-125• C. Because of their higher degree of thermal stability, these catalysts may potentially be used as a support in a conventional Ziegler-Natta catalyst for ethylene polymerization. Furthermore, because of the extensive reaction between the functional groups of PAA and TiCl 4 , the chain structure of the PAA was destroyed. The newly synthesized catalysts showed good storability, and the Correspondence to: Swapan K. Dolui;

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Section: Resultsmentioning

confidence: 99%

Poly(amic acid)‐Supported Heterogeneous Titanium‐Based Ziegler‐Natta Catalyst for Ethylene Polymerization in a Slurry Process

Kalita¹,

Konwer²,

Dolui³

2012

Adv Polym Technol

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“…Argon was dried to pass through two columns of pre-activated 4 Å molecular sieves to remove residual moisture and oxygen. All manipulations involving air and/or water sensitive compounds were performed under argon atmosphere using standard Schlenk technology [12,13].…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Low Isotactic Polypropylene Using MgCl2/AlCl3-supported Ziegler–Natta Catalysts Prepared Using the One-Pot Milling Method

Xiao

Wang

Liu

et al. 2008

Designed Monomers and Polymers

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MgCl 2 /AlCl 3 -supported Ziegler-Natta catalysts were prepared using the one-pot milling method and low isotactic polypropylene was synthesized using this catalyst. The results indicated that higher Ti content in catalyst and higher polymerization temperature lead to higher isotactic index of resultant polypropylene. It was found that when Ti content was 1.2 wt% and the ratio of AlCl 3 /MgCl 2 (mol/mol) was 0.1 in MgCl 2 /AlCl 3 -supported Ziegler-Natta catalyst, the activity of catalyst was highest at 30 • C.  Koninklijke Brill NV, Leiden, 2008

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“…Polystyrene‐supported metallocene catalysts PSM‐1 and PSM‐2 with different crosslinked structure were synthesized in our previous work 7. The crosslinked density of PSM‐2 is higher than that of PSM‐2.…”

Section: Methodsmentioning

confidence: 99%

Study on copolymerization of ethylene/1‐hexene catalyzed by a novel polystyrene‐supported metallocene catalyst

Wang¹,

Wang²,

Dong³

et al. 2006

J of Applied Polymer Sci

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Ethylene/1-hexene copolymerization was carried out with polystyrene-supported metallocene catalyst. It was found that the kinetic of the copolymerization was strongly influenced by the steric hindrance of carrier. The influences of 1-hexene concentration in the feed on catalyst productivity and comonomer reactivity were investigated. The microstructure of resultant copolymer was analyzed by 13 C NMR. It was found that the different carriers have slight effect on the composite of copolymer.

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Study on ethylene (co)polymerization and its kinetics catalyzed by a reversible crosslinked polystyrene‐supported metallocene catalyst

Cited by 8 publications

References 15 publications

Poly(amic acid)‐Supported Heterogeneous Titanium‐Based Ziegler‐Natta Catalyst for Ethylene Polymerization in a Slurry Process

Poly(amic acid)‐Supported Heterogeneous Titanium‐Based Ziegler‐Natta Catalyst for Ethylene Polymerization in a Slurry Process

Synthesis of Low Isotactic Polypropylene Using MgCl2/AlCl3-supported Ziegler–Natta Catalysts Prepared Using the One-Pot Milling Method

Study on copolymerization of ethylene/1‐hexene catalyzed by a novel polystyrene‐supported metallocene catalyst

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