Fluorine containing polyethers

Details Fluorine containing polyethers Fluorine containing polyethers

1979-04-26

1980-12-09

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528401, 560125, 568683, C08G 6368, C07C 6974, C07C 4100

Patent

active

042386020

ABSTRACT:
A fluorinated polyether is synthesized by (1) reacting perfluoroglutaryl chloride and 1,5-hexafluoropentane diol to provide a fluorinated polyester and (2) converting ester groups of the polyester to ether groups by SF.sub.4 reduction. The product obtained is a thermally stable polyether which is particularly useful in providing an elastomeric material for aircraft fuel tank sealants, tire valves, O-rings, hose, gaskets, and the like.

REFERENCES:
patent: 3452103 (1969-06-01), Trischler
patent: 3492374 (1970-01-01), Bleu et al.
patent: 3699145 (1972-10-01), Sianesi et al.
patent: 3898196 (1975-08-01), Keck

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