caa a22 4500 46579677X CHVBK 20180323112040.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF02540763 doi (NATIONALLICENCE)springer-10.1007/BF02540763 Effect of process variables, degree of ethoxylation and alcohol structure on relative ethoxylation rate constants [Elektronische Daten] [Paul Geissler, Adrain Johnson Jr.] Supercritical fluid chromatographic determinations of ethylene oxide distributions in ethoxylated alcohols with subsequent computer calculations of relative propagation to initiation ethoxylation rate constants for each ethoxylated oligomer have been carried out for normal octanol under varying reaction conditions. A number of other alcohols were also ethoxylated under essentially constant conditions. In the normal octanol studies, within an approximately fifteen-fold change in absolute ethoxylation rates due to variations in temperature, pressure, and potassium hydroxide catalyst concentration, the data indicate that such changes do not affect ethylene oxide distributions. Suggestions by earlier workers of changes in relative ethoxylation rate constants with the average degree of ethoxylation were verified. Chain length for normal alcohol feeds does not affect distributions in the C-8 to C-13 range, but branching at the carbon α to the hydroxyl carbon increases the relative propagation to initiation rate constants, and a secondary alcohol exhibits an even higher ratio. AOCS Press, 1990 Ethoxylated alcohols nationallicence ethoxylation process variables nationallicence ethylene oxide oligomer distributions nationallicence non-ionic surfactants nationallicence relative rate constants nationallicence supercritical fluid chromatography nationallicence Geissler Paul Intermediates Technology Division, Exxon Chemical Company, P.O. Box 241, 70821, Baton Rouge, LA aut Johnson Jr. Adrain Department of Chemical Engineering, Louisiana State University, Louisiana, USA aut Journal of the American Oil Chemists' Society Springer-Verlag 67/8(1990-08-01), 541-546 0003-021X 67:8<541 1990 67 11746 https://doi.org/10.1007/BF02540763 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02540763 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Geissler Paul Intermediates Technology Division, Exxon Chemical Company, P.O. Box 241, 70821, Baton Rouge, LA aut NATIONALLICENCE 700 1- Johnson Jr Adrain Department of Chemical Engineering, Louisiana State University, Louisiana, USA aut NATIONALLICENCE 773 0- Journal of the American Oil Chemists' Society Springer-Verlag 67/8(1990-08-01), 541-546 0003-021X 67:8<541 1990 67 11746 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer