Deuterated and partially deuterated polyisobutenes, synthesized via living carbocationic polymerization

Mallwitz, Frank; Grasmüller, Martin; Ismeier, Jürgen R.; Eckelt, Reinhard; Nuyken, Oskar; Goedel, Werner A.

doi:10.1002/(sici)1521-3935(19990501)200:5<1014::aid-macp1014>3.0.co;2-y

Macromol. Chem. Phys.

1999

DOI: 10.1002/(sici)1521-3935(19990501)200:5<1014::aid-macp1014>3.0.co;2-y

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Deuterated and partially deuterated polyisobutenes, synthesized via living carbocationic polymerization

Frank Mallwitz

Martin Grasmüller

Jürgen R. Ismeier

et al.

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2000

2013

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Cited by 7 publications

References 27 publications

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H(OEt₂)₂[P(1,2‐O₂C₆Cl₄)₃]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

Siu¹,

Hazin²,

Gates³

2013

Chemistry A European J

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The development of novel Brønsted acids featuring the hexacoordinate phosphorus(V) anion [TRISPHAT](-) {[1](-)=[P(1,2-O2C6Cl4)3](-)} are reported. The title compound, H(OEt2)2[1], was synthesized from 1,2-(HO)2C6Cl4 (3 equiv) and PCl5 in the presence of diethyl ether. This compound was fully characterized by (1)H, (31)P and (13)C NMR spectroscopy, X-ray crystallography and elemental microanalysis. Dissolution of H(OEt2)2[1] in acetonitrile results in the slow precipitation of crystalline H(OEt2)(NCMe)[1], which was characterized by X-ray diffraction; however, in CD2Cl2 solution the [TRISPHAT](-) anion protonated and ring-opened. The weighable, solid H(OEt2)2[1] was found to be a competent initiator for the polymerization of n-butyl vinyl ether, α-methylstyrene, styrene and isoprene at a variety of temperatures and monomer-to-initiator ratios. At low temperatures, polymers with M(n) >10(5) were obtained for n-butyl vinyl ether and α-methylstyrene whereas slightly lower molecular weights were obtained with styrene and isoprene (10(4) < M(n) <10(5)). The poly(α-methylstyrene) synthesized at -78 °C is syndiotactic-rich (ca. 87% rr) whereas the polystyrene obtained at -50 °C is atactic. The polyisoprene obtained possessed all possible modes of enchainment as well as branched and/or cyclic structures that are often observed in polyisoprene.

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H(OEt₂)₂[P(1,2‐O₂C₆Cl₄)₃]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

Siu¹,

Hazin²,

Gates³

2013

Chemistry A European J

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Solvent‐Ligated Transition Metal Complexes as Initiators for the Polymerization of Isobutene

Nuyken

Vierle

Kühn

et al. 2006

Macromolecular Symposia

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After a brief introduction of the history of polyisobutene and the description of an interesting commercial process, this article is focused on the mechanism of the isobutene initiation and propagation. Furthermore, the INIFER technique will be briefly discussed. Finally, it will be shown that polyisobutene with a high content of terminal olefinic groups can be synthesized by using transition metal complexes in homogeneous solution at room temperature. Mechanisms of the isobutene polymerization initiated by this new class of initiators will be suggested.

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Living carbocationic polymerization of resonance-stabilized monomers

Puskás

Kaszás

2000

Progress in Polymer Science

149

105

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Deuterated and partially deuterated polyisobutenes, synthesized via living carbocationic polymerization

Cited by 7 publications

References 27 publications

H(OEt₂)₂[P(1,2‐O₂C₆Cl₄)₃]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

H(OEt₂)₂[P(1,2‐O₂C₆Cl₄)₃]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

Solvent‐Ligated Transition Metal Complexes as Initiators for the Polymerization of Isobutene

Living carbocationic polymerization of resonance-stabilized monomers

Contact Info

Product

Resources

About

Deuterated and partially deuterated polyisobutenes, synthesized via living carbocationic polymerization

Cited by 7 publications

References 27 publications

H(OEt2)2[P(1,2‐O2C6Cl4)3]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

H(OEt2)2[P(1,2‐O2C6Cl4)3]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

Solvent‐Ligated Transition Metal Complexes as Initiators for the Polymerization of Isobutene

Living carbocationic polymerization of resonance-stabilized monomers

Contact Info

Product

Resources

About

H(OEt₂)₂[P(1,2‐O₂C₆Cl₄)₃]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins

H(OEt₂)₂[P(1,2‐O₂C₆Cl₄)₃]: Synthesis, Characterization, and Application as a Single‐Component Initiator for the Carbocationic Polymerization of Olefins