Synthesis and characterization of new fluorine-containing polyethers

✍ Scribed by John W. Fitch; Emilio Bucio; Lymari Martinez; Javier Macossay; Sreenu R. Venumbaka; Norman Dean; Diane Stoakley; Patrick E. Cassidy

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 120 KB
• Volume: 44
• Category: Article
• ISSN: 0032-3861
• DOI: 10.1016/s0032-3861(03)00734-1

✦ Synopsis

A highly fluorinated monomer, 1,3-bis(1,1,1,3,3,3-hexafluoro-2-pentafluorophenylmethoxy-2-propyl)benzene (12F-FBE), is obtained by reaction of the sodium salt of 1,3-bis(1,1,1,3,3,3-hexafluoro-2-hydroxy-2-propyl)benzene with pentafluorobenzyl bromide. 12F-FBE reacts with diphenols to give soluble, hydrophobic, low dielectric (2.30-2.43 at 10 GHz) polyethers. Thermal stability as measured by TGA (10 wt% loss) is moderate and ranges from 445 to 464 8C in air. Glass transition temperatures are between 89 and 110 8C.