Purification of sulfobutylated cyclodextrins with specific ion exchange resins
today’s cyclodextrin:
US Patent on Sulfobutyl-BCD production: GRANTED 😉
The invention here lies in the unique purification technology, namely the combined use of a strong anion exchange resin having dialkyl 2-hydroxyethyl ammonium hydroxide functionality and a cation exchange resin.
Szejtli Gabriella, István Puskás