Abstract del lavoro presentato al "Xth European Symposium on Fluorine Chemistry", Padova, 20-25 settembre 1992 - Long chain hydro-fluorocarbons CF3(CF2)n(CH2)mCH3 (n = 3, 5, 7; m = 7, 11, 13, 15, 17) synthesised by free radical addition of perfluoroalkyl iodides RFI to linear 1-alkenes, showed interesting surface-active properties in a non-aqueous medium [M. Napoli, A. Scipioni and P. Alessi, J. Fluorine Chem., 51 (1991) 103]. Pursuing the research on the physical properties of these compounds, a series of measurements of cloud point (ASTM D 2500-81) and pour point (ASTM D 97-66) was done with solutions of these hydro-fluorocarbons in a paraffin oil and the measured values were then plotted against w/w concentration. An increase of the cloud point and pour point values of paraffin, depending on the lenght of the perfluoroalkyl group, was generally observed.
Cloud Point and Pour Point Measurements of Long Chain Hydrofluorocarbons Solutions in a Paraffin Oil
CORTESI, ANGELO
1992-01-01
Abstract
Abstract del lavoro presentato al "Xth European Symposium on Fluorine Chemistry", Padova, 20-25 settembre 1992 - Long chain hydro-fluorocarbons CF3(CF2)n(CH2)mCH3 (n = 3, 5, 7; m = 7, 11, 13, 15, 17) synthesised by free radical addition of perfluoroalkyl iodides RFI to linear 1-alkenes, showed interesting surface-active properties in a non-aqueous medium [M. Napoli, A. Scipioni and P. Alessi, J. Fluorine Chem., 51 (1991) 103]. Pursuing the research on the physical properties of these compounds, a series of measurements of cloud point (ASTM D 2500-81) and pour point (ASTM D 97-66) was done with solutions of these hydro-fluorocarbons in a paraffin oil and the measured values were then plotted against w/w concentration. An increase of the cloud point and pour point values of paraffin, depending on the lenght of the perfluoroalkyl group, was generally observed.Pubblicazioni consigliate
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