Synthesis of bisphenol A‐free oligomeric phthalonitrile resins with sulfone and sulfone‐ketone containing backbones

Two new oligomeric sulfone and sulfone‐ketone containing phthalonitrile (PN) resins with excellent processability have been developed. The PN monomers were prepared from the reaction of an excess amount of bisphenol S with 4‐(chlorophenyl)sulfone or 4,4‐dichlorobenzophenone in the presence of a base...

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Bibliographic Details
Published in:Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 2016-06, Vol.54 (11), p.1639-1646
Main Authors: Laskoski, Matthew, Clarke, Jadah S., Neal, Arianna, Ricks-Laskoski, Holly L., Hervey, W. Judson, Keller, Teddy M.
Format: Article
Language:English
Subjects:
Bisphenols
Cures
Dielectric properties
Mechanical properties
Polymers
Resins
Stability
Sulfones
thermal properties
thermosets
Viscosity
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Summary:Two new oligomeric sulfone and sulfone‐ketone containing phthalonitrile (PN) resins with excellent processability have been developed. The PN monomers were prepared from the reaction of an excess amount of bisphenol S with 4‐(chlorophenyl)sulfone or 4,4‐dichlorobenzophenone in the presence of a base in a solvent mixture (dimethylsulfoxide/toluene), followed by end‐capping with 4‐nitro‐PN in a two‐step, one‐pot reaction. These PN resins exhibited good viscosities and cure times for molding into various shapes. After being thermally cured to yield crosslinked polymers, these polymers demonstrated superb mechanical properties, thermo‐oxidative stability, and maintained good dielectric properties.
ISSN:0887-624X
1099-0518
DOI:10.1002/pola.28020