Techniques for the preparation of highly fluorinated polyethers

US7049393B2 · kind B2 · utility

Assignee

• National Research Council of Canada · CA

Inventors

• Jianfu Ding · Ottawa, CA
• Futian Liu · Sunnyvale, US
• Ming Zhou · Shanghai, CN
• Mei Li · Newark, US
• Mike Day · Ottawa, CA
• Pascal Vuillaume · Drummondville, CA

Key dates

• Filing date: May 28, 2003
• Grant date: May 23, 2006
• Expiry date: May 28, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit:wherein n provides a molecular weight up to about 30,000 to 100,000, X represents one of following groups: none, ketone, sulfone, sulfide, ether, hexafluoroisopropylidene, αω-perfluoroalkylene, oxadiazole, and Y is 4,4′-(hexafluoroisopropylidene)-diphenyl, 4,4′-isopropylidene diphenyl, 3,3′-isopropylidene diphenyl, phenyl, or chlorinated phenol which process comprises reacting a bis(pentafluorophenyl) compound and a bisphenol or hydroquinone in the presence of a dehydrating agent and a polar aprotic solvent is disclosed. Polymers resulting from the process show good promise as new passive optic polymer waveguide materials.