Water-soluble low-molecular-weight copolymers of N-vinylpyrrolidone co
ntaining catechol hydroxy groups in side chains are prepared by reacti
ons of side chains of N-vinylpyrrolidone-crotonic acid-p-nitro-phenyl
crotonate terpolymers with dopamine. The products are characterized by
viscometry and UV, IR, and H-1 NMR spectroscopy.