Synthesis and characterization of thermally stable polymers: poly(keto-amines)

✍ Scribed by H.S. Patel; T.B. Shah

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 205 KB
• Volume: 25
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(89)90160-2

✦ Synopsis

A~traet--Poly(keto-amines) have been prepared by condensing 4,4"-dichloroacetyldiphenyl ether (DDE) with ethylene diamine, hexamethylene diamine, 1,4-phenylene diamine, 4,4'-diaminodiphenyl sulphone, o-toluidine, o-dianisidine and 1,5-diaminonaphthalene. The polycondensations were carried out at 80-85 ° using benzene as solvent and pyridine as acid acceptor. The poly(keto-amine) samples have been characterized by i.r. spectral studies; values of ~n were estimated by non-aqueous conductometric titration and viscometric study in formic acid. The polymers were examined by thermogravimetry. Poly(ketoamine) samples were reduced by the Wolf-Kishner method. The characteristics of reduced poly(ketoamines) i.e. poly(amines), have been compared with those of the parent polymers.