Addition polymerization of norbornene catalyzed by palladium(2+) compounds. A polymerization reaction with rare chain transfer and chain termination

Mehler, Christof; Risse, Wilhelm

doi:10.1021/ma00042a030

Cited by 121 publications

(56 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[15,61] The possibility of a nearly homogeneous polymerization of norbornene with 7 was investigated with a solvent mixture of nitrobenzene and chlorobenzene (volume ratio = 1 : 2). [62] Under these conditions chain growth continued after renewed monomer additions, indicating rare chain transfer and chain termination. Also, the polydispersity was reduced considerably in these experiments.…”

Section: Palladium Catalystsmentioning

confidence: 94%

The Vinyl Homopolymerization of Norbornene

Janiak¹,

Lassahn

2001

Macromol. Rapid Commun.

210

145

View full text Add to dashboard Cite

Section: Palladium Catalystsmentioning

confidence: 94%

The Vinyl Homopolymerization of Norbornene

Janiak¹,

Lassahn

2001

Macromol. Rapid Commun.

210

145

View full text Add to dashboard Cite

“…[33,37,38] In general, the polymerization of endo/exo mixtures of substituted norbornene derivatives resulted in low yields correlating with the endo/exo ratio. [11,14,15] Typically, endo substituted norbornene derivatives showed low tendency to polymerize. However, Sen et al reported on a Pd catalyst system which gave excellent results in terms of yields in the polymerization of endo/exo mixtures of alkyl substituted norbornenes (e.g.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Rheological Properties of Poly(5‐n‐hexylnorbornene)

Müller¹,

Kreiling²,

Dehnicke³

et al. 2006

Macro Chemistry & Physics

View full text Add to dashboard Cite

Summary: Poly(5‐n‐hexylnorbornene) (PHNB) was obtained in high molecular weight and high yields by vinyl‐type polymerization of 5‐n‐hexyl‐2‐norbornene (endo/exo = 77/23) with [NiBr(NPMe3)]4/B(C6F5)3 as catalyst precursor. The combination of size exclusion chromatography with on‐line light scattering and intrinsic viscosity measurements allowed the Mark‐Houwink expressions to be evaluated in tetrahydrofuran. The unperturbed chain dimensions for poly(5‐n‐hexylnorbornene) were estimated via the extrapolation procedure of Burchard‐Stockmayer‐Fixman. This evaluation of the unperturbed chain dimension in turn permits the calculation of the entanglement molecular weight and the plateau modulus via the packing length model. This allows the determination of rheological properties for these materials where conventional rheology measurements are difficult, or impossible.[η]‐M data for PHNB in THF at 35 °C.magnified image[η]‐M data for PHNB in THF at 35 °C.

show abstract

“…4,5,[7][8][9][12][13][14] Metallocene-based systems lead to a stereospecific homopolymer, but the monomer conversion rate is rather low. However, palladium catalysts usually give amorphous polymers.…”

Section: Introductionmentioning

confidence: 99%

Homopolymerization and copolymerization of tert‐butyl methacrylate and norbornene with nickel‐based methylaluminoxane catalysts

Huang

Wang

Kuo

et al. 2004

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The homopolymerization and copolymerization of tert-butyl methacrylate (tBMA) and norbornene (NB) with nickel(II) acetylacetonate in combination with methylaluminoxane were systematically investigated. This catalytic system showed high activity toward the homopolymerization of both NB and tBMA. For these copolymerizations, activity was gradually lost with an addition of tBMA to NB or of NB to tBMA. This result was qualitatively explained with the trigger coordination mechanism. Furthermore, the determination of the reactivity ratios indicated a significantly higher reactivity for NB than for tBMA (r NB ϭ 4.14 and r tBMA ϭ 0.097), and this was interpreted by the coordination mechanism. The synthesized acrylate/NB copolymers exhibited glass-transition temperatures of 100 -250°C. The absence of crystallinity and the homogeneous repartition of the monomer units along the main chain yielded products with high transparency and high stability

show abstract

Addition polymerization of norbornene catalyzed by palladium(2+) compounds. A polymerization reaction with rare chain transfer and chain termination

Cited by 121 publications

References 0 publications

The Vinyl Homopolymerization of Norbornene

The Vinyl Homopolymerization of Norbornene

Synthesis and Rheological Properties of Poly(5‐n‐hexylnorbornene)

Homopolymerization and copolymerization of tert‐butyl methacrylate and norbornene with nickel‐based methylaluminoxane catalysts

Contact Info

Product

Resources

About