abstract |
The invention relates to the preparation of aldehyde-free, water-soluble and storage-stable acetal-type compounds which can be used as biologically active substances. According to the invention, * or equimolar amounts of formaldehyde and ethanolamine are reacted with aromatic mono- or dialdehydes. aldehyde-free, water-soluble, storage-stable, acetal-type compounds; biologically active compounds; * Formaldehyde; Ethanolamine} |