Accession Number : AD0627308
Title : SYNTHESIS OF ELASTOMERS FROM EPOXIDES.
Descriptive Note : Technical rept.,
Corporate Author : ARMY WEAPONS COMMAND ROCK ISLAND ILL RESEARCH AND ENGINEERING DIV
Personal Author(s) : Spearman,Elmer I.
Report Date : DEC 1965
Pagination or Media Count : 16
Abstract : Elastomeric oxypropylene terpolymers and copolymers which are resistant to petroleum base oils and flexible at low temperatures were synthesized using a ferric chloride-propylene oxide-water complex catalyst. Terpolymers of propylene oxide (PO)-allyl glycidyl ether (AGE)-polar monoepoxides varied from viscous liquids to rubbery solids. In general, their inherent viscosity increased as the polar monoepoxide concentration decreased. With PO-AGE based vulcanizates, improved tensile strength and elongation were obtained as the concentration of PO was increased. Vulcanizates based on 90% PO-8% AGE and 2% epichlorohydrin (EC1H) swelled 55% after immersion for 70 hours at 212F. in ASTM No. 3 oil and were non brittle at -40C. High molecular weight terpolymers of PO-AGE-diepoxides were prepared. Unsaturated polar compounds (i.e. allyl cyanide, allyl sulfide) did not form terpolymers with PO-AGE. (Author)
Descriptors : (*ELASTOMERS, SYNTHESIS(CHEMISTRY)), (*EPOXY RESINS, ELASTOMERS), POLYMERS, VULCANIZATES, PHYSICAL PROPERTIES
Subject Categories : Polymer Chemistry
Elastomers and Rubber
Distribution Statement : APPROVED FOR PUBLIC RELEASE