Readily Curable Fluorocarbon Ether Bibenzoxazole Polymers.
DEPARTMENT OF THE AIR FORCE WASHINGTON D C
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Thermooxidatively and hydrolytically stable perfluoroalkylene ether bibenzoxazole polymers containing hydrocarbon cure sites are synthesized by the polocondensation of a fluorocarbon biso-aminophenol containing a hydrocarbon moiety and a perfluoroalkylene ether diimidate or dithioimidate ester. The polymers are readily curable to elastomers that are resistant to hydrolysis over a wide use-temperature range. Thus, the polymers are especially suitable for use in aerospace applications where extreme environments are encountered. In particular, the polymers are useful as seals, sealants, and the like.
- Polymer Chemistry
- Adhesives, Seals and Binders