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Poly(enaminonitriles) containing biphenyl and terphenyl units in the main chain
Author(s) -
Moore J. A.,
Kim Sang Youl
Publication year - 1992
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19920540132
Subject(s) - terphenyl , biphenyl , thermal stability , polymer , monomer , curing (chemistry) , polymerization , polymer chemistry , chemistry , nucleophilic aromatic substitution , nucleophilic substitution , dielectric , organic chemistry , materials science , optoelectronics
Two new monomers, 4,4′‐bis(1‐chloro‐2,2‐dicyanovinyl)biphenyl and 4,4″‐bis(1‐chloro‐2,2‐dicyanovinyl)‐p‐terphenyl, have been synthesized and polymerized with several diamines by vinylic nucleophilic substitution producing poly(enaminonitriles) with molecular weight varying from low to moderately high, depending on the diamines used. The polymers were soluble in polar, aprotic solvents before thermal curing, but became insoluble at high temperatures without the evolution of volatile byproducts. These new polymers exhibit excellent thermal stability, particularly when they contain para‐linked aromatic rings. Dielectric measurements of some of the polymers revealed dielectric constants of at least 4.