Accession Number : AD0463850
Title : SYNTHESIS OF HIGH-STRENGTH CHEMICAL RESISTANT ELASTOMERS FOR EXTREME TEMPERATURE SERVICE
Descriptive Note : Final technical rept.
Corporate Author : FMC CORP PRINCETON NJ
Personal Author(s) : Cook, E W ; Erickson, C A ; Gannon, J A
Report Date : Jan 1965
Pagination or Media Count : 90
Abstract : The synthesis of new fluorinated elastomers serviceable at low temperatures is described. Hexafluoroacetone and hydrogen-containing olefins have been found to form both low polymers and hydrogen-containing oxetanes on actinic irradiation. Evidence is presented to show that the intermediate is a biradical. A new elastomer system has been discovered involving the condensation of a polyfluorinated diol with a fluorocarbon diene. This unique fluorinated polyether has been found to have a very low transition temperature (-54 C). Evidence has also been found that a polyfluorinated diol will condense with hexafluorobenzene. Polyurethane polymers have been successfully formed by condensation of a polyfluorinated diol with phosphorous-containing diisocyanates. Several new monomers are described.
Descriptors : *ELASTOMERS , SILOXANES , TRANSITION TEMPERATURE , SILANES , ISOCYANATES , KETONES , FLUORINE COMPOUNDS , OXYGEN HETEROCYCLIC COMPOUNDS , VINYL PLASTICS , ALKENES , GLYCOLS , ISOCYANIC ACID , BROMINE COMPOUNDS , MONOCYCLIC COMPOUNDS , ORGANIC SULFUR COMPOUNDS , SYNTHESIS(CHEMISTRY) , CHLORINE COMPOUNDS
Subject Categories : Elastomers and Rubber
Distribution Statement : APPROVED FOR PUBLIC RELEASE