Synthesis and Physical Properties of Novel Perfluorinated Methylene Oxide Oligomers. The Ultimate Low Temperature Fluids

Kuang-Sen Sung, Richard J. Lagow

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

Perfluorinated polyethers are a class of substances which are extremely inert and have both extraordinary high temperature stability and low temperature properties. The synthesis of perfluorinated polyformaldehydes with the highest oxygen content was designed to give the maximum liquid range and low temperature properties. Novel low molecular weight perfluorinated polyformaldehydes with stable and unreactive perfluoro-n-butyl end groups were prepared by liquid-phase direct fluorination. The boiling point of these compounds increases by approximately 20 °C with the addition of each difluoromethylene oxide unit. This trend does not continue for longer chain lengths (n > 4) where the increase in boiling point per CF2O unit diminishes. The average increase of melting temperature is ~1-2 °C as the perfluorinated polyformaldehyde chain increases one difluoromethylene oxide unit. The new perfluoropolyether fluids produced have melting points ranging from -145 to -152 °C.

原文English
頁(從 - 到)4276-4278
頁數3
期刊Journal of the American Chemical Society
117
發行號15
DOIs
出版狀態Published - 1995 一月 1

All Science Journal Classification (ASJC) codes

  • 催化
  • 化學 (全部)
  • 生物化學
  • 膠體和表面化學

指紋

深入研究「Synthesis and Physical Properties of Novel Perfluorinated Methylene Oxide Oligomers. The Ultimate Low Temperature Fluids」主題。共同形成了獨特的指紋。

引用此