Synthesis of Novel Fluorine Compounds: New Experimental Challenges in Elemental Fluorine Chemistry.
Final rept. 1 Jun 82-31 Oct 86,
TEXAS UNIV AT AUSTIN DEPT OF CHEMISTRY
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Over the last several years our research program has been heavily involved in developing the technology previously mentioned which is now being focus upon commercially to established broad based routes to perfluoropolyethers, one of the most exotic and important classes of high performance materials to be developed over the last twenty years. Our original route involved the very straightforward controlled elemental fluorination of hydrocarbon polyethers, the simplest process being the fluorination of the hydrocarbon polyethylene. We have developed a new synthetic method which we consider to be truly general and which will open synthetic routes to literally hundreds of different perfluoroether and perfluoropolyether structures. This synthetic technique involves the conversion by direct fluorination of hydrocarbon polyesters to perfluoropolyesters followed by treatment with sulfur tetrafluoride to produce new perfluoropolyethers and in some cases perfluoropolyether esters which can be hydrolyzed to produce functional fluorocarbon polyethers. Keywords Elemental fluorine, Copolymerization, Direct fluorination, Polymers, Perfluoropolyethers, Fluorocarbons.
- Organic Chemistry