Living Alkene Polymerization for Polyolefin Architectures

Anderson-Wile, Amelia M.; Edson, Joseph B.; Coates, Geoffrey W.

doi:10.1002/9780470825150.ch9

Cited by 7 publications

(7 citation statements)

References 259 publications

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“…There has been intense activity toward the development of highly active catalysts for both polymerization and oligomerization of olefins during the last few decades . In some cases we understand fairly well why a particular catalyst leads to polymerization vs oligomerization .…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights on the Controlled Switch from Oligomerization to Polymerization of 1-Hexene Catalyzed by an NHC-Zirconium Complex

et al. 2015

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The benzimidazolylidene zirconium complex 1 switches from an oligomerization (without additive) to a polymerization catalyst by addition of an L-type ligand such as trimethylphosphine, while larger phosphines or amines completely inhibit catalysis. On the basis of the regioselectivity of the oligomers/polymers obtained, the time profiles of reactions as a function of added ligand, and the molecular structures of several cationic zirconium complexes, we propose a mechanistic framework for interpreting this complex catalytic behavior.

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Section: Introductionmentioning

confidence: 99%

Mechanistic Insights on the Controlled Switch from Oligomerization to Polymerization of 1-Hexene Catalyzed by an NHC-Zirconium Complex

et al. 2015

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“…Not only this, a majority of these strategies and techniques can provide valuable references or even be directly used in the design and fabrication of advanced polymer materials with more complex chain structures, e.g., highly branched, star and brush, which are now the research frontiers of polymer science. [ 17 ] In addition, a systematic review provides good insight and guidance for remaining problems, which are diffi cult but necessary to solve in this fi eld. This may be particularly helpful to inspire and promote new researchers, who have planned or started working in this area, for further development of the PO industry.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review on Controlled Synthesis of Long-Chain Branched Polyolefins: Part 1, Single Catalyst Systems

Liu

Wang

et al. 2016

Macromol. React. Eng.

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Polyolefins (POs) are the largest polymer product in the world. The innovation in converting commodity olefin monomers to highly value added high‐performance POs has been and will continue to be a major theme in both academic research and industry practice. The excellent properties of POs can be achieved through precise engineering of their chain architectures, which largely involves control of the chain branching structures. Long‐chain branching is one of the most important parameters in the aspect of various chain branching structures. A huge amount of literatures have been reported to achieve better control of long‐chain branched structures over the last two decades. Recently, good effort has been made in reviewing all the major literatures and summarizing the catalytic systems and synthetic strategies for the controlled synthesis of long‐chain branched POs. This paper represents the first of the series, that is, controlled synthesis of long‐chain branched POs via single catalyst systems.

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“…The synthesis of polyolefins having a defined microstructure and incorporating functional polar groups at the chain end(s) is one of the major challenges of polymer science . This offers unique features regarding physical–chemical properties like adhesion, paintability, and miscibility/compatibility in blends and also in terms of chemical reactivity with the possibility to use these macromolecular objects as reactive building blocks to provide further access to hybrid polymers with sophisticated architectures. , One seducing synthetic approach in that frame, which is in principle authorized by living polymerization as recalled by Coates et al, is the achievement of the end-functionalization in the continuum of the polymer chain growth. By comparison, the more tedious postfunctionalization, which is part of a multistep chemistry transformation, requires a prior isolation of the polymer.…”

Section: Introductionmentioning

confidence: 99%

Efficient One-Pot Synthesis of End-Functionalized trans-Stereoregular Polydiene Macromonomers

et al. 2019

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End-functionalized 1,4-trans-polydienes (isoprene and myrcene) were prepared by means of a neodymium-mediated continuous polymerization–functionalization process. A chain transfer stage was essential to get a high level of functionalization of the polymer. The living 1,4-trans-stereoregular polymer chain was reacted with benzophenone to afford up to 97% −CPh2OH end-group with isoprene, while in the case of myrcene, using the same strategy afforded 1,4-trans-polymyrcene with a functionalization rate of 83%. The strategy was validated with complementary functionalization experiments using benzaldehyde and styrene oxide, both affording 95% end-capped trans-stereoregular polydienes.

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Living Alkene Polymerization for Polyolefin Architectures

Cited by 7 publications

References 259 publications

Mechanistic Insights on the Controlled Switch from Oligomerization to Polymerization of 1-Hexene Catalyzed by an NHC-Zirconium Complex

Mechanistic Insights on the Controlled Switch from Oligomerization to Polymerization of 1-Hexene Catalyzed by an NHC-Zirconium Complex

A Comprehensive Review on Controlled Synthesis of Long-Chain Branched Polyolefins: Part 1, Single Catalyst Systems

Efficient One-Pot Synthesis of End-Functionalized trans-Stereoregular Polydiene Macromonomers

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