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Preparation of Perfluorinated Imidoylamidoxime Polymers
- Source :
- NASA Tech Briefs. 6(1)
- Publication Year :
- 1982
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1982.
-
Abstract
- Perfluorinated imidoylamidoxime polymers with excellent resistance to heat, chemicals and solvents are prepared by condensing a perfluorinated nitrile with a perfluorinated amidoxime in vacuum or inert atmosphere from 20 degrees to 70 degrees C. When both reactants are difunctional, oligomeric or polymeric products are obtained. After cyclization of imidoylamidoxime groups to 1,2,4-oxadiazole linkages, process yields highly resistant elastomers. Competing side reactions are inhibited by low processing temperature.
- Subjects :
- Materials
Subjects
Details
- Language :
- English
- ISSN :
- 0145319X
- Volume :
- 6
- Issue :
- 1
- Database :
- NASA Technical Reports
- Journal :
- NASA Tech Briefs
- Publication Type :
- Report
- Accession number :
- edsnas.19810000036
- Document Type :
- Report