C. Terraza, L. Tagle, Á. Leiva
Aug 1, 2004
Citations
0
Influential Citations
12
Citations
Journal
Polymer Bulletin
Abstract
SummaryThe synthesis of 4,4’–(dimethylsilylene)bis(phenyl chloroformate) and 4,4’–(dimethylgermylene)bis(phenyl chloroformate) is described according to the same route for the synthesis of bisphenol–A bischloroformate. These compounds were characterized using elemental analysis, FT–IR and NMR spectroscopy. Poly(urethanes) derived from these bischlororformates containing silicon or germane in the main chain, were obtained in benzene solution by reaction with 4,4’–methylenedianiline in the presence of pyridine. Poly(urethanes) were characterised by spectroscopic methods and the thermal properties (Tg and thermal stability) were compared with the homologue poly(urethane) obtained from bisphenol–A chloroformate.