Figure 3From: Basic surface-active properties in the homologous series of β-alkyl (C12H25/C18H37) polyethyleneoxy (n = 0-20) propionamidesBlock diagram of operations of the process of elimination by liquid-liquid extraction of polyethyleneglycols (PEG n ) from the mixture of dehydrated “heterogeneous” polyethoxylated (n = 3-20) higher alcohols R(EO) n H (adapted from Schick, M., 1987) [[8]].Back to article page