Ethynylated N-phenylbenzimidazoles: Synthesis and thermal properties

Autor:	N. Bilow, K. S. Y. Lau, R. H. Boschan, W. J. Kelleghan
Rok vydání:	1983
Předmět:	Thermogravimetry chemistry.chemical_classification Thermogravimetric analysis End-group chemistry.chemical_compound Bisbenzimidazole Materials science chemistry Polymerization Acetylene Polymer chemistry Polymer Prepolymer
Zdroj:	Journal of Polymer Science: Polymer Chemistry Edition. 21:3009-3026
ISSN:	1542-9369 0360-6376
DOI:	10.1002/pol.1983.170211016
Popis:	Three diethynylated bisbenzimidazole prepolymers were synthesized and their polymerization characteristics examined. N-phenyl-substituted diethynylated bisbenzimidazoles melted between 250 and 265°C and had gel times of several seconds to several minutes. In contrast, an N-phenoxyphenyl diethynylated bisbenzimidazole melted at a temperature sufficiently low (ca. 150°C) to provide a 5-min gel time at 170°C and a 4-min gel time at 210°C. This material showed promise as a potential laminating resin and a brief screening of the prepolymer for this application was carried out. The polymers of both N-phenyl- and N-phenoxyphenyl-substituted diethynylated bisbenzimidazoles showed apparent degradation temperatures of 500°C or greater when examined by thermogravimetric analysis.
Databáze:	OpenAIRE
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