211
b-cyclodextrin
alkaline soluƟon
Bead polymer
suspension
Raw bead
polymer
Paraffin oil to be
regenerated
β-cyclodextrin
Na 2 SO 3
NaOH
Air-dry bead
polymer
Bead polymer
fracƟons
DissoluƟon
Water soluble
pre-polymer
+ epichlorohydrin
+ (polyvinyl)alcohol
SƟrring
+ paraffin oil
+ ethylene glycol diepoxy propyl ether
SƟrring at 60°C for 3.5 hours
FiltraƟon
Washing
Drying
Sieving
Fig. 4.15 Flow chart of cyclodextrin bead polymer preparation
Fig. 4.16 Scanning
electron microscopic photo
of cyclodextrin
bead polymer
4 History of Cyclodextrin Production in Hungary