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Advances in High-Temperature Non-Metallocene Catalysts for Polyolefin Elastomers.

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Title: Advances in High-Temperature Non-Metallocene Catalysts for Polyolefin Elastomers.
Authors: Wang, Cheng1,2 (AUTHOR), Li, Xin2 (AUTHOR), Chen, Si3 (AUTHOR), Shan, Tianyu4 (AUTHOR) tyshan@zju.edu.cn
Source: Materials (1996-1944). Mar2025, Vol. 18 Issue 6, p1334. 24p.
Subjects: Metallocene catalysts, Transition metal catalysts, Molecular weights, Industrial costs, Transition metals, Transition metal complexes
Abstract: Despite the great successes achieved by metallocene catalysts in high-value-added polyolefin elastomer, the challenging preparation conditions and undesirable high-temperature molecular weight capabilities have compromised the efficiency and cost of polyolefin in industrial production. Recently, non-metallocene catalysts have received considerable attention due to their high thermostability, especially when coordinated with early transition metals. This review provides an overview of these early transition metal non-metallocene catalysts, which are mainly composed of N,N′-, N,O-, and N,S-bidentate complexes and tridentate complexes. The structural characteristics, catalytic performance, advantages, and disadvantages of the relevant non-metallocene catalysts, as well as their applications, are discussed. Candidates for commercialization of non-metallocene catalysts are proposed—focusing on imine-enamine, amino-quinoline, and pyridine-imine catalysts—by comparing the successful industrialization cases of metallocene catalysts. Finally, the trend in the research on non-metallocene catalysts and the strategies to address the challenges limiting their commercialization are considered. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: Advances in High-Temperature Non-Metallocene Catalysts for Polyolefin Elastomers.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Cheng%22">Wang, Cheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xin%22">Li, Xin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Si%22">Chen, Si</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shan%2C+Tianyu%22">Shan, Tianyu</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> tyshan@zju.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Mar2025, Vol. 18 Issue 6, p1334. 24p.
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  Data: <searchLink fieldCode="DE" term="%22Metallocene+catalysts%22">Metallocene catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metal+catalysts%22">Transition metal catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+weights%22">Molecular weights</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+costs%22">Industrial costs</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metals%22">Transition metals</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metal+complexes%22">Transition metal complexes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Despite the great successes achieved by metallocene catalysts in high-value-added polyolefin elastomer, the challenging preparation conditions and undesirable high-temperature molecular weight capabilities have compromised the efficiency and cost of polyolefin in industrial production. Recently, non-metallocene catalysts have received considerable attention due to their high thermostability, especially when coordinated with early transition metals. This review provides an overview of these early transition metal non-metallocene catalysts, which are mainly composed of N,N′-, N,O-, and N,S-bidentate complexes and tridentate complexes. The structural characteristics, catalytic performance, advantages, and disadvantages of the relevant non-metallocene catalysts, as well as their applications, are discussed. Candidates for commercialization of non-metallocene catalysts are proposed—focusing on imine-enamine, amino-quinoline, and pyridine-imine catalysts—by comparing the successful industrialization cases of metallocene catalysts. Finally, the trend in the research on non-metallocene catalysts and the strategies to address the challenges limiting their commercialization are considered. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma18061334
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      – Code: eng
        Text: English
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        PageCount: 24
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      – SubjectFull: Metallocene catalysts
        Type: general
      – SubjectFull: Transition metal catalysts
        Type: general
      – SubjectFull: Molecular weights
        Type: general
      – SubjectFull: Industrial costs
        Type: general
      – SubjectFull: Transition metals
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      – SubjectFull: Transition metal complexes
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      – TitleFull: Advances in High-Temperature Non-Metallocene Catalysts for Polyolefin Elastomers.
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            NameFull: Li, Xin
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            NameFull: Chen, Si
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            – D: 15
              M: 03
              Text: Mar2025
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              Y: 2025
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              Value: 18
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