Synthesis and characterization of 4,4’–(dimethylsilylene) bis( phenyl chloroformate) and 4,4’–(dimethylgermylene)bis(phenyl chloroformate) and their use in the synthesis of poly(urethanes)

被引：0
|
作者：
C. A. Terraza
L. H. Tagle
A. Leiva
J. C. Vega
机构：
[1] Faculty of chemistry,Department of Organic Chemistry
[2] Pontificia Universidad Católica de Chile,Department of Physical Chemistry
[3] Faculty of Chemistry,undefined
[4] Pontificia Universidad Católica de Chile,undefined
来源：
Polymer Bulletin | 2004年 / 52卷
关键词：
Spectroscopy; Silicon; Benzene; Chloroformate; Thermal Stability;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The 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.
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页码： 101 / 107
页数：6
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