Curable, thermally stable poly(enaminonitriles)

Curable, thermally stable poly(enaminonitriles)

Three new bis(1-chloro-2,2-dicyanovinyl) aromatic monomers have been synthesized. Vinylic nucleophilic substitution polymerization with 4,4'-diaminodiphenyl ether led to moderately high molecular weight poly(enaminonitriles) (0.39 < ( eta ) < 0.84 dL/g, measured in dimethylformamide at 25...

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Veröffentlicht in:Macromolecules 1989-03, Vol.22 (3), p.1084-1092
Hauptverfasser: Moore, J. A, Robello, Douglas R
Format: Artikel
Sprache:eng
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Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
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container_title Macromolecules
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creator Moore, J. A
Robello, Douglas R
description Three new bis(1-chloro-2,2-dicyanovinyl) aromatic monomers have been synthesized. Vinylic nucleophilic substitution polymerization with 4,4'-diaminodiphenyl ether led to moderately high molecular weight poly(enaminonitriles) (0.39 < ( eta ) < 0.84 dL/g, measured in dimethylformamide at 25 deg C). The polymers exhibited excellent thermal stability, retaining 100% of their mass up to 400 deg C under nitrogen. Evidence is presented for an intramolecular cyclization reaction occurring > 300 deg C to form poly(4-aminoquinoline) repeat units. The cyclization reaction occurs without the emission of volatile byproducts, which is a drawback in the curing of polyimides. The dielectric constant of a representative polymer of this class was found to be approximately eight before heat treatment and five afterward. 21 ref.--AA
doi_str_mv 10.1021/ma00193a015
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source American Chemical Society Journals
subjects Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
title Curable, thermally stable poly(enaminonitriles)
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