Synthesis and Evaluation of Polyfunctional Perfluorohypofluorites.
Abstract
The purpose of this program was to develop stable difluoroxyperfluorinated cross-linking agents for the vulcanization of perfluoroelastomers for potential use as seals and sealants on advanced aircraft and missile systems. Several methods were investigated for the preparation of high boiling fluoroxy terminated perfluoroethers and perfluoroalkanes for evaluation as cross-linking agents. In particular, cesium fluoride catalyzed flourination of acid flouride terminated perfluoroethers and perfluoroalkanes was investigated in detail. The conversions of the acid fluoride groups to fluoroxy groups were found to be low (less than 25%) in almost every case investigated. The highest conversions were obtained when the fluorinations were carried out on the performed cesium alkoxide salt of the acid fluoride in the presence of catalytic amounts of elemental iodine. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1972
- Accession Number
- AD0903875
Entities
People
- Burrell N. Hamon