Results 261 to 270 of about 24,607 (305)
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Journal of Macromolecular Science, Part C: Polymer Reviews, 1972
Abstract In 1954 a patent by Matlack [1] and shortly thereafter a paper by Breslow, Hulse, and Matlack [2] described that acrylamide readily polymerizes to fairly high molecular weight poly(β-alanine) (nylon 3) in the presence of anionic initiators such as t-BuONa.
J. P. Kennedy, T. Otsu
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Abstract In 1954 a patent by Matlack [1] and shortly thereafter a paper by Breslow, Hulse, and Matlack [2] described that acrylamide readily polymerizes to fairly high molecular weight poly(β-alanine) (nylon 3) in the presence of anionic initiators such as t-BuONa.
J. P. Kennedy, T. Otsu
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Anionic polymerization of vinyl ketones
Die Makromolekulare Chemie, 1963AbstractStereoregular polymerizations of some vinyl ketones were examined by using several anionic catalysts.Methyl vinyl ketone was found to be polymerized by some catalysts such as calcium zinc tetraethyl and phenylmagnesium bromide (etherate) to give highly crystalline polymers which melt at about 160°C.
Ryota Fujio +2 more
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Anionic Polymerization of Siliconcontaining Rings
Phosphorus, Sulfur, and Silicon and the Related Elements, 1997Silole-containing polysilanes and polysilane heteropolymers are prepared by ring-opening anionic polymerization. Properties of novel polymers are discussed.
H. Sakurai, T. Sanji, T. Sakai, H. Hanao
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1996
Part 1 Structure and bonding in carbanionic compounds: structure of carbanions and organometallic compounds stabilities of carbanionic species ion pairs, free ions and stereochemistry in carbanionic chemistry. Part 2 Introduction to anionic and living polymerization: living polymerization - definitions, consequences and criteria general aspects of ...
Henry Hsieh, Roderic P. Quirk
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Part 1 Structure and bonding in carbanionic compounds: structure of carbanions and organometallic compounds stabilities of carbanionic species ion pairs, free ions and stereochemistry in carbanionic chemistry. Part 2 Introduction to anionic and living polymerization: living polymerization - definitions, consequences and criteria general aspects of ...
Henry Hsieh, Roderic P. Quirk
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2015
Schlenk Techniques for Anionic Polymerization.- High Vacuum Techniques for Anionic Polymerization.- Non-Polar Monomers: Styrene and 1,3-Butadiene Derivatives.- Anionic Polymerization of Polar Vinyl Monomers: Vinylpyridines, (Meth)acrylates, (Meth)acrylamides, (Meth)acrylonitrile, Phenyl Vinyl Sulfoxide, Benzofulvene and Other Monomers.- Cyclic Monomers:
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Schlenk Techniques for Anionic Polymerization.- High Vacuum Techniques for Anionic Polymerization.- Non-Polar Monomers: Styrene and 1,3-Butadiene Derivatives.- Anionic Polymerization of Polar Vinyl Monomers: Vinylpyridines, (Meth)acrylates, (Meth)acrylamides, (Meth)acrylonitrile, Phenyl Vinyl Sulfoxide, Benzofulvene and Other Monomers.- Cyclic Monomers:
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Journal of Polymer Science Part A: General Papers, 1963
AbstractTwo cases of initiation of vinyl polymerization by radical‐ions are considered. In the one case the transfer from radical‐ion to monomer is instantaneous and virtually complete. Here the relative amount of free radical propagation as compared to anionic propagation is negligibly small.
A. V. Tobolsky, D. B. Hartley
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AbstractTwo cases of initiation of vinyl polymerization by radical‐ions are considered. In the one case the transfer from radical‐ion to monomer is instantaneous and virtually complete. Here the relative amount of free radical propagation as compared to anionic propagation is negligibly small.
A. V. Tobolsky, D. B. Hartley
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New Methods for Anionic Polymerizations at Elevated Temperatures: ‘Retarded Anionic Polymerizations’
Macromolecular Chemistry and Physics, 2006AbstractSummary: Living anionic polymerizations are one of the most important methods for the synthesis of well‐defined homo‐ and block copolymers, but these polymerizations are typically carried out at low temperatures, which limits their applications. Deffieux et al.
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Anionic polymerization of fluorostyrenes
Acta Polymerica, 1995AbstractAnionic polymerizations of 2‐, 3‐, and 4‐fluorostyrenes (2‐, 3‐, and 4‐FSt) were carried out at −78°C in THF with sec‐butyl‐lithium, oligo(α‐methylstyryl)lithium, ‐dipotassium, and (1,1‐diphenyl‐3‐methyl‐pentyl)lithium as initiators to give the respective polymers in quantitative yields.
Kenji SUGIYAMA +3 more
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The Anionic Polymerization of Trimethylvinylsilane
Journal of Macromolecular Science: Part A - Chemistry, 1986Abstract Trimethylvinylsilane was found to polymerize anionically in cyclo-hexane much like styrene or dienes, except for the occurrence of a termination step. The propagation and initiation reactions were found to be first order with respect to trimethylvinylsilane and one-half order with respect to the initiator and chain ends initially, but first ...
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The anionic polymerization of crotonaldehyde
Die Makromolekulare Chemie, 1963AbstractA systematic investigation of the polymerization of crotonaldehyde was carried out. It was found that certain tertiary phosphines, whose pKa is greater than 8.0, were active catalysts for this polymerization. The experimental data were most consistent with a polymer structure resulting from a vinyl type polymerization of crotonaldehyde with a ...
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