HOMOLOG DISTRIBUTION OF ALCOHOL ETHOXYLATES

The differences between narrow range and wide range homologue distribu tions of alcohol ethoxylates were investigated. The Weibull-Nycancer-G old and Natta-Mantica theoretical models were used as convenient tools for appropriate interpretation. It was found that the intramolecular sequestering effect is mainly responsible for widening the ethylene ox ide adducts distribution. Furthermore only monovalent catalyst metal i ons are subjected to the Weibull-Tornquist complexation. Polyvalent me tal ions inhibit the complexation leading to the narrow range distribu tion of homologues. Appropriate interpretation is also supported by ki netic data.