Copolymers of ethylene and hexafluoropropene
AssigneePennwalt Corporation
InventorDaniel Ashton Dimmig
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Abstract
Copolymers of ethylene and hexafluoropropene (HFP) containing between about 15 mol percent and 50 mol percent HFP comprising low to intermediate molecular weight oils of high viscosity. The copolymers are prepared in the presence of a free radical initiator at autogenous pressure at a temperature ranging from 20.degree. C. to 80.degree. C.
Claims10
A highly viscous oil having little tendency to flow at ambient temperature and characterized by having low to intermediate molecular weight consisting essentially of copolymerized units of 85 mol percent to 50 mol percent ethylene and 15 mol percent to 50 mol percent hexafluoropropene, the copolymer being soluble in liquid perfluoroalkanes and liquid perfluorochloroalkanes.
Dependencies are inferred from the claim text.